631 Caterpillar generator fault/alarm codes with symptom, cause and remedy — compiled from Caterpillar service and controller documentation.
| Code | Meaning / symptom | Cause | Remedy |
|---|---|---|---|
| 0 | Exhaust TEMP Fault and Analog Temperature SHUTDOWN Input Circuit Fault | ||
| 0 | Frequency FREQUENCY Shutdown SHUTDOWN | ||
| 0 | Voltage Shutdown VOLTAGE SHUTDOWN Voltage Warning | ||
| 0 | Current Shutdown CURRENT SHUTDOWN | ||
| 001 | Code 001 will not display a flash code | ||
| 1 | Temperature EXHAUST TEMP Fault and Analog P SHUTDOWN Input Circuit Fault | ||
| 1 | Frequency FREQUENCY Shutdown SHUTDOWN | ||
| 1 | Voltage Shutdown VOLTAGE Voltage Warning SHUTDOWN Voltage Warning | ||
| 2 | Cylinder 2 Fault | ||
| 2 | Frequency FREQ MISMATCH Generator Output Generator Output Mismatch Warning WARN Generator Output Generator Output | ||
| 03 | The diagnostic code does not change from a FMI of 03 to an FMI of 04 when a jumper wire is installed between the ECM and the suspect sensor. | Repair the connectors and/or wiring or replace the connectors and/or wiring. | |
| 03 | Open/Short to +Battery — active diagnostic code for the suspect sensor | Open circuit or short in the analog engine sensor circuit; sensor fault; harness signal wire open or excessive resistance; ECM not reading the sensor circuit | Inspect electrical connectors and wiring and repair the circuit; check sensor supply voltage at the sensor connector (5.0 ± 0.5 VDC) and refer to "Analog Sensor Supply Circuit - Test" if not OK; short the sensor signal at the sensor connector and check if the FMI changes to 04, replace the suspect sensor if the harness is OK; measure resistance of the signal wire (less than 10 Ohms) and repair the circuit if open or excessive resistance; short the sensor signal at the ECM and repair the wiring between the sensor and the ECM, or verify results and replace the ECM |
| 03 | Open circuit diagnostic code for the suspect sensor | Open circuit in the sensor or the wire between the sensor and the sensor connector | Replace the sensor; do not install the sensor in the engine; verify that no diagnostic codes are active for the suspect sensor before permanently installing the sensor |
| 3 | Temperature Hich TEMP SENSOR Analog Input Circuit | ||
| 03 to 04 | The CID-FMI does not change from 03 to 04 when a jumper wire is installed between pin B and pin C at the suspect sensor connector. | Temporarily connect a new sensor. Verify that the new sensor solves the problem before you permanently install the new sensor. Calibrate the sensor. | |
| 04 | The diagnostic code does not change from a FMI of 04 to an FMI of 03 when the suspect sensor signal wire is disconnected from the ECM. | Replace the ECM. | |
| 04 | Short to Ground — active diagnostic code for the suspect sensor | Short to ground in the analog engine sensor circuit; sensor fault; harness signal wire shorted; ECM not reading the sensor circuit | Inspect electrical connectors and wiring and repair the circuit; check sensor supply voltage at the sensor connector (5.0 ± 0.5 VDC) and refer to "Analog Sensor Supply Circuit - Test" if not OK; short the sensor signal at the sensor connector and check if the FMI changes from 03 to 04, replace the suspect sensor if the harness is OK; measure resistance of the signal wire (less than 10 Ohms) and repair the circuit if open or excessive resistance; short the sensor signal at the ECM and repair the wiring between the sensor and the ECM, or verify results and replace the ECM |
| 04 | Short circuit diagnostic code for the suspect sensor | Short circuit between the sensor harness connector and the ECM | Leave the sensor disconnected; proceed to Test Step 7 |
| 4 | Temperature OW TEMP SENSOR Analog Input Circuit | ||
| 04 (Short to Ground) | There is a short circuit diagnostic code for the suspect sensor. | Use a suitable piece of wire to short terminal B (Analog Return) and terminal C (Signal) at the harness side of the suspect sensor connector. Check for active diagnostic codes on Cat ET. | |
| 04 to 03 | The CID-FMI does not change from 04 to 03 when the suspect sensor is disconnected. | Replace the suspect sensor. Verify that the repair eliminates the problem. | |
| 6 0 | High Fuel Level Shutdown | Digital Input Circuit Fault | |
| 6 1 | Low Fuel Level Shutdown | Digital Input Circuit Fault | |
| 08 | An active 0-8 diagnostic code is present. | ||
| 8 0 | High Engine Oil Level Shutdown | Digital Input Circuit Fault | |
| 8 1 | Low Engine Oil Level Shutdown | Digital Input Circuit Fault | |
| 12 | Sensing System SYS FAILURE Sensing Circuit Fault | ||
| 13 | Fault for the Fuel Temperature Sensor | ||
| 14 | Cylinder 4 Fault | ||
| 15 | Open or Short Circuit of Injection Actuation Pressure Sensor | Service Schedule Service for the Engine. | |
| 15 | Temperature EXHAUST TEMP Fault and Analog PS WARNING Input Circuit Fault | ||
| 15 | Frequency FREQUENCY Warning Frequency Warning | ||
| 15 | Voltage Warning VOLTAGE WARNING | ||
| 15 | Current Warning CURRENT WARNING | ||
| 17 | High Injection Actuation Pressure | Service Schedule Service for the Engine. | |
| 17 | Temperature EXHAUST TEMP Fault and Analog PY WARNING Input Circuit Fault | ||
| 17 | Frequency FREQUENCY Frequency Warning | ||
| 17 | Voltage Warning VOLTAGE WARNING | ||
| 17 | Generator Reverse POWbR WARNIN G Generator Reverse Power Warning Power Warning | ||
| 18 | Open or Short for the Injection Actuation Pressure Control Valve | Service Schedule Service for the Engine. | |
| 18 | SHORT HIGH | ||
| 21 | Sensor Supply Voltage Above Normal or Below Normal | Service Schedule Service for the Engine. | |
| 22 | Fault alarm | ||
| 24 | Oil Pressure Sensor Fault | Service Schedule Service for the Engine. | |
| 25 | Inlet Manifold Air Pressure Sensor Fault | Service Schedule Service for the Engine. | |
| 26 | Atmospheric Pressure Sensor Fault | Service Schedule Service for the Engine. | |
| 27 | Coolant Temperature Sensor Fault | Service Schedule Service for the Engine. | |
| 28 | Check the Adjustments for the Throttle Position Sensor. | Service Schedule Service for the Engine. | |
| 31 | Air Damper AIR DAMPER Digital Input Circuit Closed CLOSED Fault | ||
| 31 | Pay in Emergency EMERGENCY petal Input Circuit Position POSITION an | ||
| 31 | Generator Circuit ener eRe. OSED Digital Input Circuit Breaker Closed Fault | ||
| 31 | Engine in ENGINE IN Engine Cooldown COOLDOWN Warning WARNING | ||
| 31 | Unexpected UNEXPECTED U ted Engine Engine Shutdown SHUTDOWN uidown | ||
| 34 | Loss Of Engine RPM Signal | Service Schedule Service for the Engine. | |
| 35 | Event for Engine Overspeed | Shut down the Engine: Operate the engine cautiously. Get immediate service. Severe engine damage may result. | |
| 37 | Fuel Pressure Sensor Fault | Service Schedule Service for the Engine. | |
| 38 | Inlet Manifold Air Temperature Sensor Fault | Service Schedule Service for the Engine. | |
| 38 0 | External Tank High Fuel Level Shutdown — EXT TANK HIGH FUEL LEVEL S/D | Digital Input Circuit or Analog Input Circuit Fault | Digital Input Circuit Fault and Analog Input Circuit Fault |
| 38 1 | External Tank Low Fuel Level Shutdown — EXT TANK LOW FUEL LEVEL S/D | Digital Input Circuit or Analog Input Circuit Fault | Digital Input Circuit Fault and Analog Input Circuit Fault |
| 38 3 | External Tank Fuel Level Sensor Short High — EXT TANK FUEL LEVEL SENSOR SHORT HIGH | External Tank Analog Input Circuit Fault | Analog Input Circuit Fault |
| 38 4 | External Tank Fuel Level Sensor Short Low — EXT TANK FUEL LEVEL SENSOR SHORT LOW | External Tank Analog Input Circuit Fault | Analog Input Circuit Fault |
| 38 15 | External Tank High Fuel Level Warning — EXT TANK HIGH FUEL LVL WARNING | External Tank Analog Input Circuit Fault | Digital Input Circuit Fault and Analog Input Circuit Fault |
| 38 17 | External Tank Low Fuel Level Warning — EXT TANK LOW FUEL LVL WARNING | Digital Input Circuit or Analog Input Circuit Fault | Digital Input Circuit Fault and Analog Input Circuit Fault |
| 38 46 | External Tank High Fuel Level Warning | Digital Input Circuit or Analog Input Circuit Fault | Fault and Analog Input Circuit Fault |
| 39 | Mechanical Failure of the Injection Actuation Pressure Sensor | Service Schedule Service for the Engine. | |
| 42 | Check the Calibration of the Timing Sensor. | Shut down the Engine: Operate the engine cautiously. Get immediate service. Severe engine damage may result.; Service Schedule Service for the Engine. | |
| 46 | Low Oil Pressure Event | Service Schedule Service for the Engine. | |
| 51 | Intermittent Battery Power to the ECM | Shut down the Engine: Operate the engine cautiously. Get immediate service. Severe engine damage may result.; Service Schedule Service for the Engine. | |
| 52 | Personality Module Fault | Shut down the Engine: Operate the engine cautiously. Get immediate service. Severe engine damage may result.; Service Schedule Service for the Engine. | |
| 55 | Diagnostic Code 55 | ||
| 56 | The following parameters must be checked: Customer and System | Service Schedule Service for the Engine. | |
| 59 | Incorrect Engine Software | Service Schedule Service for the Engine. | |
| 61 | Event for High Coolant Temperature | Service Schedule Service for the Engine. | |
| 62 | Event for Low Coolant Level | Service Schedule Service for the Engine. | |
| 63 | Low Fuel Pressure Event | Service Schedule Service for the Engine. | |
| 64 | Event for High Inlet Manifold Air Temperature | Service Schedule Service for the Engine. | |
| 65 | Event for High Fuel Temperature | ||
| 72 | Fault of Cylinder 1 or Cylinder 2 | Service Schedule Service for the Engine. | |
| 73 | Fault of Cylinder 3 or Cylinder 4 | Service Schedule Service for the Engine. | |
| 74 | Fault of Cylinder 5 or Cylinder 6 | Service Schedule Service for the Engine. | |
| 82 | STARTING AIR PRES SENSOR SHORT HIGH | ||
| 82 0 | High Starting Air Pressure Shutdown — HIGH STARTING AIR PRES SHUTDOWN | Starting Air Digital Input Circuit Fault | Digital Input Circuit Fault and Analog Input Circuit Fault |
| 82 1 | Low Starting Air Pressure Shutdown — LOW STARTING AIR PRES SHUTDOWN | Starting Air Digital Input Circuit Fault | Digital Input Circuit Fault and Analog Input Circuit Fault |
| 82 3 | Starting Air Pressure Sensor Short High — STARTING AIR PRES SENSOR SHORT HIGH | Starting Air Analog Input Circuit Fault | Analog Input Circuit Fault |
| 82 4 | Starting Air Pressure Sensor Short Low — STARTING AIR PRES SENSOR SHORT LOW | Starting Air Analog Input Circuit Fault | Analog Input Circuit Fault |
| 82 15 | High Starting Air Pressure Warning — HIGH STARTING AIR PRES WARNING | Starting Air Analog Input Circuit Fault | Digital Input Circuit Fault and Analog Input Circuit Fault |
| 82 17 | Low Starting Air Pressure Warning — LOW STARTING AIR PRES WARNING | Starting Air Analog Input Circuit Fault | Digital Input Circuit Fault and Analog Input Circuit Fault |
| 84-00 | Vehicle Overspeed Warning | ||
| 84-14 | Quick Stop Occurrence | ||
| 95 0 | High Fuel Filter Differential Pressure Shutdown — HIGH FUEL FLTR DIFF PRES SHUTDOWN | Fuel Filter Digital Input Circuit Fault | Digital Input Circuit Fault and Analog Input Circuit Fault |
| 95 1 | Low Fuel Filter Differential Pressure Shutdown — LOW FUEL FILTER DIFF PRES SHUTDOWN | Fuel Filter Digital Input Circuit Fault | Digital Input Circuit Fault and Analog Input Circuit Fault |
| 95 3 | Fuel Filter Differential Pressure Sensor Short High — FUEL FLTER DIFF PRES SENSOR SHORT HIGH | Fuel Filter Analog Input Circuit Fault | Analog Input Circuit Fault |
| 95 4 | Fuel Filter Differential Pressure Sensor Short Low — FUEL FLTR DIFF PRES SENSOR SHORT LOW | Fuel Filter Analog Input Circuit Fault | Analog Input Circuit Fault |
| 95 15 | High Fuel Filter Differential Pressure Warning — HIGH FUEL FLTR DIFF PRES WARNING | Fuel Filter Analog Input Circuit Fault | Digital Input Circuit Fault and Analog Input Circuit Fault |
| 95 17 | Low Fuel Filter Differential Pressure Warning — LOW FUEL FILTER DIFF PRES WARNING | Fuel Filter Analog Input Circuit Fault | Digital Input Circuit Fault and Analog Input Circuit Fault |
| 96 0 | High Fuel Level Shutdown — HIGH FUEL LEVEL SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 96 1 | Low Fuel Level Shutdown — LOW FUEL LEVEL SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 96 3 | Fuel Level Sensor Short High — FUEL LEVEL SENSOR SHORT HIGH | Analog Input Circuit Fault | Analog Input Circuit Fault |
| 96 4 | Fuel Level Sensor Short Low — FUEL LEVEL SENSOR SHORT LOW | Analog Input Circuit Fault | Analog Input Circuit Fault |
| 96 15 | High Fuel Level Warning — HIGH FUEL LEVEL WARNING | Analog Input Circuit Fault | Digital Input Circuit Fault and Analog Input Circuit Fault |
| 96 17 | Low Fuel Level Warning — LOW FUEL LEVEL WARNING | Analog Input Circuit Fault | Digital Input Circuit Fault and Analog Input Circuit Fault |
| 98 0 | High Engine Oil Level Shutdown — HIGH ENGINE OIL LVL SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 98 1 | Low Engine Oil Level Shutdown — LOW ENGINE OIL LVL SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 98 3 | Engine Oil Level Sensor Short High — ENGINE OIL LEVEL SENSOR SHORT HIGH | Analog Input Circuit Fault | Analog Input Circuit Fault |
| 98 4 | Engine Oil Level Sensor Short Low — ENGINE OIL LEVEL SENSOR SHORT LOW | Analog Input Circuit Fault | Analog Input Circuit Fault |
| 98 15 | High Engine Oil Level Warning — HIGH ENGINE OIL LVL WARNING | Analog Input Circuit Fault | Digital Input Circuit Fault and Analog Input Circuit Fault |
| 98 17 | Low Engine Oil Level Warning — LOW ENGINE OIL LVL WARNING | Analog Input Circuit Fault | Digital Input Circuit Fault and Analog Input Circuit Fault |
| 99 0 | High Oil Filter Differential Pressure Shutdown — HIGH OIL FILTER DIFF PRES SHUTDOWN | Digital Input Circuit Fault | Digital Input Circuit Fault and Analog Input Circuit Fault |
| 99 1 | Low Oil Filter Differential Pressure Shutdown — LOW OIL FILTER DIFF PRES SHUTDOWN | Digital Input Circuit Fault | Digital Input Circuit Fault and Analog Input Circuit Fault |
| 99 3 | Oil Filter Differential Pressure Sensor Short High — OIL FILTER DIFF PRES SENSOR SHORT HIGH | Analog Input Circuit Fault | |
| 99 4 | Oil Filter Differential Pressure Sensor Short Low — OIL FILTER DIFF PRES SENSOR SHORT LOW | Analog Input Circuit Fault | |
| 99 15 | High Oil Filter Differential Pressure Warning — HIGH OIL FILTER DIFF PRES WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 99 15 | HIGH OIL FILTER DIFF PRES Fault and Analog | ||
| 99 17 | Low Oil Filter Differential Pressure Warning — LOW OIL FILTER DIFF PRES WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 99 17 | LOW OIL FILTER DIFF PRES Fault and Analog | ||
| 100 1 | Low Engine Oil Pressure Shutdown — LOW ENGINE OIL PRESS SHUTDOWN | Data Link circuit Fault and Digital Input Circuit Fault | |
| 100 1 | PRESS SHUTDOWN Fault and Digital Input Circuit | ||
| 100 17 | Low Engine Oil Pressure Warning — LOW ENGINE OIL PRESS WARNING | Data Link circuit Fault and Digital Input Circuit Fault | |
| 100 17 | PRESS WARNING Fault and Digital Input Circuit | ||
| 100-11 | Very Low Oil Pressure | ||
| 105-11 | Very High Intake Manifold Air Temperature | ||
| 107 0 | High Air Filter Differential Pressure Shutdown — HIGH AIR FILTER DIFF PRES SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 107 0 | DIFF PRES SHUTDOWN Fault and Analog | ||
| 107 1 | Low Air Filter Differential Pressure Shutdown — LOW AIR FILTER DIFF PRES SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 107 1 | DIFF PRES SHUTDOWN Fault and Analog | ||
| 107 3 | Air Filter Differential Pressure Sensor Short High — AIR FILTER DIFF PRES SENSOR SHORT HIGH | Analog Input Circuit Fault | |
| 107 4 | Air Filter Differential Pressure Sensor Short Low — AIR FILTER DIFF PRES SENSOR SHORT LOW | Analog Input Circuit Fault | |
| 107 15 | High Air Filter Differential Pressure Warning — HIGH AIR FILTER DIFF PRES WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 107 15 | HIGH AIR FILTER DIFF PRES Fault and Analog | ||
| 107 17 | Low Air Filter Differential Pressure Warning — LOW AIR FILTER DIFF PRES WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 107 17 | LOW AIR FILTER DIFF PRES Fault and Analog | ||
| 110 0 | High Engine Coolant Temperature Shutdown — HIGH ENGINE COOLANT TEMP SHUTDOWN | Data Link Circuit Fault and Digital Input Circuit Fault | |
| 110 0 | HIGH ENGINE COOLANT TEMP SHUTDOWN Fault and Digital Input Circuit | ||
| 110 15 | High Engine Coolant Temperature Warning — HIGH ENGINE COOLANT TEMP WARNING | Data Link Circuit Fault and Digital Input Circuit Fault | |
| 110 15 | LOW ENGINE COOLANT TEMP WARNING Fault and Digital Input Circuit | ||
| 110 17 | Low Engine Coolant Temperature Warning — LOW COOLANT TEMP WARNING | Data Link Circuit Fault and Digital Input Circuit Fault | |
| 110-11 | Very High Coolant Temperature | ||
| 111 | Cylinder 1 Fault — Engine Misfire; Low Power; Reduced Engine Speed | Shut Down the Engine: Operate the engine cautiously. Get immediate service. Severe engine damage may result; Schedule a Service | |
| 111 | High Engine Coolant | HIGH ENG COOL | Digital Input Circuit Level Warning LEVEL WARNING § | Fault and Analog Input Circuit Fault | |
| 111 0 | High Engine Coolant Level Shutdown — HIGH ENG COOL LEVEL SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 111 0 | HIGH ENG COOL LEVEL SHUTDOWN Fault and Analog | ||
| 111 1 | Low Engine Coolant Level Shutdown — LOW ENG COOL LEVEL SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 111 1 | LOW ENG COOL LEVEL WARNING Fault and Analog | ||
| 111 3 | Engine Coolant Level Sensor Short High — ENGINE COOLANT LEVEL SENSOR SHORT HIGH | Analog Input Circuit Fault | |
| 111 4 | Engine Coolant Level Sensor Short Low — ENGINE COOLANT LEVEL SENSOR SHORT LOW | Analog Input Circuit Fault | |
| 111 15 | High Engine Coolant Level Warning — HIGH ENG COOL LEVEL WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 111 15 | HIGH ENG COOL LEVEL WARNING Fault and Analog | ||
| 111 17 | Low Engine Coolant Level Warning — LOW ENG COOL LEVEL WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 111 17 | LOW ENG COOL LEVEL WARNING Fault and Analog | ||
| 111-11 | Very Low Coolant Level | ||
| 112 | Cylinder 2 Fault — Engine Misfire; Low Power; Reduced Engine Speed | Shut Down the Engine: Operate the engine cautiously. Get immediate service. Severe engine damage may result; Schedule a Service | |
| 113 | Cylinder 3 Fault — Engine Misfire; Low Power; Reduced Engine Speed | Shut Down the Engine: Operate the engine cautiously. Get immediate service. Severe engine damage may result; Schedule a Service | |
| 114 | Cylinder 4 Fault — Engine Misfire; Low Power; Reduced Engine Speed | Shut Down the Engine: Operate the engine cautiously. Get immediate service. Severe engine damage may result; Schedule a Service | |
| 114 15 | High Engine Coolant Level Warning | ||
| 116 | Cylinder 6 Fault | ||
| 117 | Cylinder 1 Fault | ||
| 133 | Intake Manifold Temperature sensor fault — Low Power; Reduced Engine Speed | Schedule a Service | |
| 137 | High Injection Actuation Pressure | ||
| 137 | High Fire Extinguisher | HIGH FIRE | Digital Input Circuit Pressure Shutdown EXTNG PRES Fault and Analog Input SHUTDOWN Circuit Fault | |
| 137 0 | HIGH FIRE EXTNG PRES SHUTDOWN Fault and Analog | ||
| 137 1 | LOW FIREEXTNG PRES SHUTDOWN Fault and Analog | ||
| 137 3 | FIRE EXTING SENSOR SHORT - Analog Input Circuit | ||
| 137 4 | FIRE EXTNG PRES Analog Input Circuit | ||
| 137 15 | HIGH FIRE EXTNG Pressure Warning - Digital Input Circuit | ||
| 137 17 | LOW FIREEXTNG Pressure Warning - Digital Input Circuit | ||
| 141 | Primary Speed/Timing Sensor Fault — Engine Misfire; Reduced Engine Speed | Schedule a Service | |
| 142 | Secondary Speed/Timing Sensor Fault — Reduced Engine Speed | Schedule a Service | |
| 142 | Pump Timing Sensor Fault | ||
| 143 | Timing Calibration Fault — Low Power; Reduced Engine Speed | Schedule a Service | |
| 144 | Engine Operation Mode Selector Switch Fault — Low Power; Reduced Engine Speed | Schedule a Service | |
| 144 | Crank Timing Sensor Fault | ||
| 151 | High Air Filter Restriction — Low Power; Reduced Engine Speed | Schedule a Service | |
| 154 | Throttle Position sensor Fault — Low Power; Reduced Engine Speed | Schedule a Service | |
| 155 | Secondary Throttle Position sensor Fault — Low Power; Reduced Engine Speed | Schedule a Service | |
| 157 | Oil Pressure Sensor Fault — Engine Misfire; Low Power; Reduced Engine Speed; Engine Shutdown | Shut Down the Engine: Operate the engine cautiously. Get immediate service. Severe engine damage may result; Schedule a Service | |
| 159 | Fuel Rail Pressure Sensor Fault — Low Power; Reduced Engine Speed | Schedule a Service | |
| 162 | High Pressure Fuel Pump Fault — Engine Misfire; Low Power; Reduced Engine Speed | Shut Down the Engine: Operate the engine cautiously. Get immediate service. Severe engine damage may result; Schedule a Service | |
| 167 | Low Battery Charging System | LOW BATTERY Charging System | System Voltage Warming CHARGING SYS VOLT WARN | |
| 167 17 | Low Battery Charging System Voltage Warning — LOW BATTERY CHARGING SYS VOLT WARN | Charging System | |
| 167 17 | VOLT WARN - Charging System | ||
| 168 | Coolant Temperature Sensor Fault — Engine Misfire; Low Power; Reduced Engine Speed | Schedule a Service | |
| 168 | High Battery Voltage | HIGH BATTERY Charging System | Shutdown VOLTAGE SHUTDOWN | |
| 168 0 | High Battery Voltage Shutdown — HIGH BATTERY VOLTAGE SHUTDOWN | Charging System | |
| 168 0 | VOLTAGE SHUTDOWN - Charging System | ||
| 168 15 | High Battery Voltage Warning — HIGH BATTERY VOLTAGE WARNING | Charging System | |
| 168 15 | VOLTAGE WARNING - Charging System | ||
| 168 17 | Low Battery Voltage Warning — LOW BATTERY VOLTAGE WARNING | Charging System | |
| 168 17 | VOLTAGE WARNING - Charging System | ||
| 168 Q | High Battery Voltage | ||
| 169 | Low Engine Coolant — Low Power; Reduced Engine Speed | Schedule a Service | |
| 169 | Coolant Temperature Sensor Fault | ||
| 171 | High Ambient Air Temperature | HIGH AMBIENT Digital Input Circuit | AIR TEMP Fault and Analog Input SHUTDOWN Circuit Fault | |
| 171 0 | High Ambient Air Temperature Shutdown — HIGH AMBIENT AIR TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 171 0 | HIGH AMBIENT AIR TEMP SHUTDOWN - Analog Input Circuit | ||
| 171 1 | Low Ambient Air Temperature Shutdown — LOW AMBIENT AIR TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 171 1 | LOW AMBIENT AIR TEMP SHUTDOWN - Analog Input Circuit | ||
| 171 3 | Ambient Air Temperature Sensor Short High — AMBIENT AIR TEMP SENSOR SHORT HIGH | TEMP SENSOR Fault | Analog Input Circuit Fault |
| 171 3 | TEMP SENSOR Short High - Analog Input Circuit | ||
| 171 4 | Ambient Air Temperature Sensor Short Low — AMBIENT AIR TEMP SENSOR SHORT LOW | Analog Input Circuit Fault | |
| 171 4 | TEMP SENSOR Short Low - Analog Input Circuit | ||
| 171 15 | High Ambient Air Temperature Warning — HIGH AMBIENT AIR TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 171 17 | Low Ambient Air Temperature Warning — LOW AMBIENT AIR TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 173 | High Exhaust Temperature | HIGH EXHAUST Digital Input Circuit | TEMP Fauit and Analog Input SHUTDOWN Circuit Fault | |
| 173 | Exhaust Temperature Sensor Short | EXHAUST Analog Input Circuit | SENSOR SHORT HIGH TEMPERATURE Fauit | |
| 173 0 | High Exhaust Temperature Shutdown — HIGH EXHAUST TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 173 0 | HIGH EXHAUST TEMP SHUTDOWN - Analog Input Circuit | ||
| 173 1 | Low Exhaust Temperature Shutdown — LOW EXHAUST TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 173 1 | LOW EXHAUST TEMP SHUTDOWN - Analog Input Circuit | ||
| 173 3 | Exhaust Temperature Sensor Short High — EXHAUST TEMPERATURE SENSOR SHORT HIGH | TEMP SENSOR Fault | Analog Input Circuit Fault |
| 173 3 | TEMP SENSOR Short High - Analog Input Circuit | ||
| 173 4 | Exhaust Temperature Sensor Short Low — EXHAUST TEMPERATURE SENSOR SHORT LOW | Analog Input Circuit Fault | |
| 173 4 | TEMP SENSOR Short Low - Analog Input Circuit | ||
| 173 15 | High Exhaust Temperature Warning — HIGH EXHAUST TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 173 17 | Low Exhaust Temperature Warning — LOW EXHAUST TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 175 | High Engine Oil Temperature | HIGH ENGINE Digital Input Circuit | OIL TEMP Fault and Analog Input SHUTDOWN Circuit Fault | |
| 175 | TEMP WARNING | ||
| 175 0 | High Engine Oil Temperature Shutdown — HIGH ENGINE OIL TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 175 0 | HIGH ENGINE OIL TEMP SHUTDOWN - Digital Input Circuit | ||
| 175 1 | Low Engine Oil Temperature Shutdown — LOW ENGINE OIL TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 175 1 | Temperature TEMP SHUTDOWN | Fault and Analog | Shutdown Input Circuit Fault - Engine Oil | |
| 175 3 | Engine Oil Temperature Sensor Short High — ENGINE OIL TEMP SENSOR SHORT HIGH | SENSOR SHORT | Analog Input Circuit Fault |
| 175 3 | Sensor Short High |! ricpy aul | Engine Oil - ENGINE OIL TEMP | |
| 175 4 | Engine Oil Temperature Sensor Short Low — ENGINE OIL TEMP SENSOR SHORT LOW | Engine Oil - ENGINE OIL TEMP | Analog Input Circuit Fault |
| 175 15 | High Engine Oil Temperature Warning — HIGH ENGINE OIL TEMP WARNING | Shutdown Input Circuit Fault - Engine Oil | Digital Input Circuit Fault and Analog Input Circuit Fault |
| 175 17 | Low Engine Oil Temperature Warning — LOW ENGINE OIL TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 175 17 | Temperature TEMP Worthing a Fault and Analog | Warning Input Circuit Fault - Engine Oil | |
| 176 | Low Engine Oil Temperature | LOW ENGINE Digital Input Circuit | OIL TEMP Fault and Analog Input SHUTDOWN Circuit Fauit | |
| 176 4 | Low Engine Oil Temperature | ||
| 177 | Wastegate Solenoid Fault — Low Power | Schedule a Service | |
| 185 | High Exhaust Temperature — Low Power; Reduced Engine Speed | Schedule a Service | |
| 187 | Oil Pressure Sensor Fault | ||
| 190 | Engine Over Speed | ENGINE OVER SPEED Shutdown OVER SPEED Warning SHUTDOWN | |
| 190 | Engine Speed Sensor Erratic or Not Present | SPEED ENGINE SPEED Engine Speed Circuit SENSOR Fault ERRATIC/LOST | |
| 190 | Engine Speed Sensor Open | SPEED ENGINE SPEED Engine Speed Circuit SENSOR OPEN Fault | |
| 190 0 | Engine Over Speed Shutdown — ENGINE OVER SPEED SHUTDOWN | Shutdown Input Circuit Fault - Engine Speed | Engine Over Speed Warning |
| 190 1 | Engine Under Speed Shutdown — ENGINE UNDER SPEED SHUTDOWN | Engine Under Speed | Engine Under Speed Warning |
| 190 2 | Engine Speed Sensor Erratic or Not Present — ENGINE SPEED SENSOR ERRATIC/LOST | SENSOR Fault | Engine Speed Circuit Fault |
| 190 2 | SENSOR ERRATIC/LOST au | Engine Speed - Engine Speed Circuit | |
| 190 5 | Engine Speed Sensor Open — ENGINE SPEED SENSOR OPEN | SENSOR OPEN Fault | Engine Speed Circuit Fault |
| 190 7 | SPEED WARNING | Warning Input Circuit Fault - Engine Speed | |
| 190 17 | Engine Under Speed Warning — ENGINE UNDER SPEED WARNING | Engine Under Speed Warning | |
| 190-00 | Engine Overspeed Warning | ||
| 197 | Intake Manifold Pressure Sensor Fault — Low Power; Reduced Engine Speed | Schedule a Service | |
| 199 | Glow Plug Start Relay Fault | Schedule a Service | |
| 414 | Low Engine Coolant | LOW ENG COOL | Digital Input Circuit Level Warning LEVEL WARNING | Fault and Analog Input Circuit Fault | |
| 414 17 | Low Engine Coolant | ||
| 415 | Incorrect Engine Software — Engine Misfire; Low Power; Reduced Engine Speed | Shut Down the Engine: Operate the engine cautiously. Get immediate service. Severe engine damage may result; Schedule a Service | |
| 416 | Incorrect Engine Software | ||
| 422 | Intermittent Battery Power to ECM | ||
| 426 | Machine Security System Module Fault — the engine will not start | Schedule a Service | |
| 429 | Keyswitch Fault | Schedule a Service | |
| 439 | Key Switch Fault | ||
| 489 | Fuel Rail Pressure Sensor Fault | ||
| 511 | Intermittent Battery Power to ECM — Engine Misfire; Low Power; Reduced Engine Speed; Engine Shutdown | Shut Down the Engine: Operate the engine cautiously. Get immediate service. Severe engine damage may result; Schedule a Service | |
| 514 | SAE J1939 Data Link Fault — Low Power; Reduced Engine Speed | Schedule a Service | |
| 516 | 5 Volt Sensor DC Power Supply Fault — Low Power; Reduced Engine Speed | Schedule a Service | |
| 516 | Sensor Supply Voltage Fault | ||
| 517 | 8 Volt Sensor DC Power Supply Fault — Low Power; Reduced Engine Speed | Schedule a Service | |
| 517 | Sensor Supply Voltage Fault | Schedule Service | |
| 527 | Check Customer Parameters or System Parameters — Engine Misfire; Low Power; Reduced Engine Speed | Shut Down the Engine: Operate the engine cautiously. Get immediate service. Severe engine damage may result; Schedule a Service | |
| 551 | No Detected Faults have occurred since the ignition keyswitch has been turned to the ON position | Troubleshooting is not required for code "551" | |
| 625 | SCADA Data Link Fault | SCADA DATA LINK | Data Link Circuit Fault FAULT | |
| 625 11 | SCADA Data Link Fault — SCADA DATA LINK FAULT | Data Link Circuit Fault | |
| 628 | Voltage Regulator Failure | ||
| 639 | Primary Data Link Fault | PRIMARY DATA LINK FAULT | Data Link Circuit Fault | |
| 639 11 | Primary Data Link Fault — PRIMARY DATA LINK FAULT | Data Link Circuit | Data Link Circuit Fault |
| 701 | Custom Event #1 High Shutdown | CUSTOM Digital input Circuit HIGH Fautt SHUTDOWN | |
| 701 | Custom Event #1 Low Shutdown | CUSTOM Digital Input Circuit LOW Fault SHUTDOWN | |
| 701 | Custom Event #1 Status Active | CUSTOM EVENT #1 STATUS Fault ACTIVE | |
| 701 0 | Custom Event #1 High Shutdown — CUSTOM EVENT #1 HIGH SHUTDOWN | Custom Event #1 - High Shutdown | Digital Input Circuit Fault |
| 701 1 | Custom Event #1 Low Shutdown — CUSTOM EVENT #1 LOW SHUTDOWN | Digital Input Circuit | Digital Input Circuit Fault |
| 701 3 | CUSTOM EVENT #1 | Digital Input Circuit | |
| 701 7 | LOW WARNING Fault | Custom Event #1 - Low Warning | |
| 701 15 | Custom Event #1 High Warning — CUSTOM EVENT #1 HIGH WARNING | Custom Event #1 - Low Shutdown | Digital Input Circuit Fault |
| 701 17 | Custom Event #1 Low Warning — CUSTOM EVENT #1 LOW WARNING | Digital Input Circuit Fault | |
| 701 31 | Custom Event #1 Status — CUSTOM EVENT #1 STATUS ACTIVE | Digital Input Circuit Fault | |
| 701 i | Custom Event #1 High | ||
| 702 | Custom Event #2 High Shutdown | CUSTOM Digital Input Circuit HIGH Fault SHUTDOWN | |
| 702 | Custom Event #2 Low Shutdown | CUSTOM Digital Input Circuit LOW Fault SHUTDOWN | |
| 702 | Custom Event #2 Status Active | CUSTOM EVENT #2 STATUS Fault ACTIVE | |
| 702 0 | Custom Event #2 High Shutdown — CUSTOM EVENT #2 HIGH SHUTDOWN | Custom Event #2 - High Shutdown | Digital Input Circuit Fault |
| 702 1 | Custom Event #2 Low Shutdown — CUSTOM EVENT #2 LOW SHUTDOWN | Digital Input Circuit | Digital Input Circuit Fault |
| 702 3 | CUSTOM EVENT #2 | Digital Input Circuit | |
| 702 7 | LOW WARNING Fault | Custom Event #2 - Low Warning | |
| 702 15 | Custom Event #2 High Warning — CUSTOM EVENT #2 HIGH WARNING | Custom Event #2 - Low Shutdown | Digital Input Circuit Fault |
| 702 17 | Custom Event #2 Low Warning — CUSTOM EVENT #2 LOW WARNING | Digital Input Circuit Fault | |
| 702 31 | Custom Event #2 Status — CUSTOM EVENT #2 STATUS ACTIVE | Digital Input Circuit Fault | |
| 703 | Custom Event #3 High Shutdown | CUSTOM Digital input Circuit HIGH Fault SHUTDOWN | |
| 703 0 | Custom Event #3 High Shutdown — CUSTOM EVENT #3 HIGH SHUTDOWN | Custom Event #3 - High Shutdown | Digital Input Circuit Fault |
| 703 1 | Custom Event #3 Low Shutdown — CUSTOM EVENT #3 LOW SHUTDOWN | Digital Input Circuit | Digital Input Circuit Fault |
| 703 3 | CUSTOM EVENT #3 | Digital Input Circuit | |
| 703 7 | LOW WARNING Fault | Custom Event #3 - Low Warning | |
| 703 15 | Custom Event #3 High Warning — CUSTOM EVENT #3 HIGH WARNING | Custom Event #3 - Low Shutdown | Digital Input Circuit Fault |
| 703 17 | Custom Event #3 Low Warning — CUSTOM EVENT #3 LOW WARNING | Digital Input Circuit Fault | |
| 703 31 | Custom Event #3 Status — CUSTOM EVENT #3 STATUS ACTIVE | Digital Input Circuit Fault | |
| 703 i | Custom Event #3 High | ||
| 704 0 | Custom Event #4 High Shutdown — CUSTOM EVENT #4 HIGH SHUTDOWN | Custom Event #4 - High Shutdown | Digital Input Circuit Fault |
| 704 1 | Custom Event #4 Low Shutdown — CUSTOM EVENT #4 LOW SHUTDOWN | Digital Input Circuit | Digital Input Circuit Fault |
| 704 3 | CUSTOM EVENT #4 | Digital Input Circuit | |
| 704 7 | LOW WARNING Fault | Custom Event #4 - Low Warning | |
| 704 15 | Custom Event #4 High Warning — CUSTOM EVENT #4 HIGH WARNING | Custom Event #4 - Low Shutdown | Digital Input Circuit Fault |
| 704 17 | Custom Event #4 Low Warning — CUSTOM EVENT #4 LOW WARNING | Digital Input Circuit Fault | |
| 704 31 | Custom Event #4 Status — CUSTOM EVENT #4 STATUS ACTIVE | Digital Input Circuit Fault | |
| 705 0 | Custom Event #5 High Shutdown — CUSTOM EVENT #5 HIGH SHUTDOWN | Custom Event #5 - High Shutdown | Digital Input Circuit Fault |
| 705 1 | Custom Event #5 Low Shutdown — CUSTOM EVENT #5 LOW SHUTDOWN | Digital Input Circuit | Digital Input Circuit Fault |
| 705 3 | CUSTOM EVENT #5 | Digital Input Circuit | |
| 705 7 | LOW WARNING Fault | Custom Event #5 - Low Warning | |
| 705 15 | Custom Event #5 High Warning — CUSTOM EVENT #5 HIGH WARNING | Custom Event #5 - Low Shutdown | Digital Input Circuit Fault |
| 705 17 | Custom Event #5 Low Warning — CUSTOM EVENT #5 LOW WARNING | Digital Input Circuit Fault | |
| 705 31 | Custom Event #5 Status — CUSTOM EVENT #5 STATUS ACTIVE | Digital Input Circuit Fault | |
| 706 0 | Custom Event #6 High Shutdown — CUSTOM EVENT #6 HIGH SHUTDOWN | Custom Event #6 - High Shutdown | Digital Input Circuit Fault |
| 706 1 | Custom Event #6 Low Shutdown — CUSTOM EVENT #6 LOW SHUTDOWN | Digital Input Circuit | Digital Input Circuit Fault |
| 706 3 | CUSTOM EVENT #6 | Digital Input Circuit | |
| 706 15 | Custom Event #6 High Warning — CUSTOM EVENT #6 HIGH WARNING | Custom Event #6 - Low Shutdown | Digital Input Circuit Fault |
| 706 17 | Custom Event #6 Low Warning — CUSTOM EVENT #6 LOW WARNING | Digital Input Circuit Fault | |
| 706 31 | Custom Event #6 Status — CUSTOM EVENT #6 STATUS ACTIVE | Digital Input Circuit Fault | |
| 924 3 | Digital Output #1 Short High — DIGITAL OUTPUT 1 SHORT HIGH | Digital Output Circuit | Digital Output Circuit Fault |
| 925 3 | Digital Output #2 Short High — DIGITAL OUTPUT 2 SHORT HIGH | Digital Output Circuit | Digital Output Circuit Fault |
| 970 31 | Emergency Stop Shutdown — EMERGENCY STOP SHUTDOWN | Digital Input Circuit | Digital Input Circuit Fault |
| 1122 0 | High Generator Bearing #1 Temperature Shutdown — HIGH GEN BEARING #1 TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 1122 0 | HIGH GEN #1 BEARING TEMP | SHUTDOWN Fault and Analog Input Circuit Fault | |
| 1122 0 | BEARING #1 TEMP SHUTDOWN Fault and Analog | Shutdown Input Circuit Fault - Generator | |
| 1122 1 | Low Generator Rear Bearing Temperature Shutdown — LOW GEN REAR BEARING TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 1122 1 | LOW GEN REAR BEARING TEMP | SHUTDOWN Fault and Analog Input Circuit Fault | |
| 1122 1 | BEARING TEMP SHUTDOWN Fault and Analog | Shutdown Input Circuit Fault - Generator | |
| 1122 3 | Generator Rear Bearing Temperature Sensor Short High — GEN REAR BEARING TEMP SENSOR SHORT HIGH | Generator Rear - BEARING TEMP Analog Input Circuit | Analog Input Circuit Fault |
| 1122 4 | Generator Rear Bearing Temperature Sensor Short Low — GEN REAR BEARING TEMP SENSOR SHORT LOW | Generator Rear - BEARING TEMP Analog Input Circuit | Analog Input Circuit Fault |
| 1122 15 | High Rear Generator Bearing Temperature Warning — HIGH GEN REAR BEARING TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 1122 15 | HIGH GEN REAR BEARING TEMP WARNING | WARNING Fault and Analog Input Circuit Fault | |
| 1122 15 | BEARING TEMP WARNING Fault and Analog | Warning Input Circuit Fault - Generator | |
| 1122 17 | Low Generator Rear Bearing Temperature Warning — LOW GEN REAR BEARING TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 1122 17 | LOW GEN REAR BEARING TEMP WARNING | WARNING Fault and Analog Input Circuit Fault | |
| 1122 17 | BEARING TEMP WARNING Fault and Analog | Warning Input Circuit Fault - Generator | |
| 1231 11 | Accessory Data Link Fault — ACCESSORY DATA LINK FAULT | Data Link Circuit Fault | |
| 1239 | Ruptured Fuel Basin-Primary Tank | ||
| 1239 | Unexpected Engine Shutdown | ||
| 1239 31 | Fuel Tank Leak (Fuel Rupture Basin) — FUEL TANK LEAK | Digital Input Circuit Fault | |
| 1450 | Cold Start Strategy Activation | ||
| 1664 | Engine Failure to Start Shutdown | ||
| 1664 31 | Engine Failure to Start Shutdown — ENGINE FAILURE TO START SHUTDOWN | Start Shutdown | Engine Overcrank Warning |
| 1900 | Overspeed | ||
| 1907 | Overspeed | ||
| 1912 | Overspeed | ||
| 2301A Control | When the engine oil pressure is increased beyond the low oil pressure setpoint, the GSC will inform the governor that the engine speed should be increased from IDLE to RATED rpm. | ||
| 2433 | High Right Digital Input Circuit | ||
| 2433 0 | High Right Exhaust Temperature Shutdown — HIGH RIGHT EXHAUST TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 2433 1 | Low Right Exhaust Temperature Shutdown — LOW RIGHT EXHAUST TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 2433 3 | Right Exhaust Temperature Sensor Short High — RIGHT EXHAUST TEMP SENSOR SHORT HIGH | Analog Input Circuit Fault | |
| 2433 4 | Right Exhaust Temperature Sensor Short Low — RIGHT EXHAUST TEMP SENSOR SHORT LOW | Analog Input Circuit Fault | |
| 2433 15 | High Right Exhaust Temperature Warning — HIGH RIGHT EXHAUST TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 2433 17 | Low Right Exhaust Temperature Warning — LOW RIGHT EXHAUST TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 2434 | High Left Exhaust HIGH LEFT Digital Input Circuit | ||
| 2434 0 | High Left Exhaust Temperature Shutdown — HIGH LEFT EXHAUST TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 2434 1 | Low Left Exhaust Temperature Shutdown — LOW LEFT EXHAUST TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 2434 3 | Left Exhaust Temperature Sensor Short High — LEFT EXHAUST TEMP SENSOR SHORT HIGH | Analog Input Circuit Fault | |
| 2434 4 | Left Exhaust Temperature Sensor Short Low — LEFT EXHAUST TEMP SENSOR SHORT LOW | Analog Input Circuit Fault | |
| 2434 15 | High Left Exhaust Temperature Warning — HIGH LEFT EXHAUST TEMP WARNING | Analog Input Circuit Fault | |
| 2434 17 | Low Left Exhaust Temperature Warning — LOW LEFT EXHAUST TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| 2436 | Generator Over GEN OVER Generator Over | ||
| 2436 | Generator Frequency | ||
| 2436 0 | Generator Over Frequency Shutdown — GEN OVER FREQUENCY SHUTDOWN | Generator Over Frequency Warning | |
| 2436 2 | Engine Speed-Generator Output Frequency Mismatch Warning — ENG SPEED-GEN FREQ MISMATCH WARN | Engine Speed Warning | |
| 2436 4 | Generator Under Frequency Shutdown — GEN UNDER FREQUENCY SHUTDOWN | Generator Under Frequency Warning | |
| 2436 12 | Generator Output Sensing System Failure — GEN AC METERING SYS FAILURE | Generator Output Sensing Circuit Fault | |
| 2436 15 | Generator Over Frequency Warning — GEN OVER FREQUENCY WARNING | Generator Over Frequency Warning | |
| 2436 17 | Generator Under Frequency Warning — GEN UNDER FREQUENCY WARNING | Generator Under Frequency Warning | |
| 2437 | Ruptured Fuel Basin - Primary Tank | ||
| 2440 | Generator Over GEN OVER Generator Over | ||
| 2440 | Generator Voltage | ||
| 2440 0 | Generator Over Voltage Shutdown — GEN OVER VOLTAGE SHUTDOWN | Generator Over Voltage Warning | |
| 2440 1 | Generator Under Voltage Shutdown — GEN UNDER VOLTAGE SHUTDOWN | Generator Under Voltage Warning | |
| 2440 15 | Generator Over Voltage Warning — GEN OVER VOLTAGE WARNING | Generator Over Voltage Warning | |
| 2440 17 | Generator Under Voltage Warning — GEN UNDER VOLTAGE WARNING | Generator Under Voltage Warning | |
| 2448 | Generator Over GEN OVER Generator Over | ||
| 2448 | Generator AC Current | ||
| 2448 0 | Generator Over Current Shutdown — GEN OVER CURRENT SHUTDOWN | Generator Over Current Warning | |
| 2448 15 | Generator Over Current Warning — GEN OVER CURRENT WARNING | Generator Over Current Warning | |
| 2452 | Generator Reverse GEN REVERSE Power Shutdown POWER Power Warning | ||
| 2452 1 | Generator Reverse Power Shutdown — GEN REVERSE POWER SHUTDOWN | Generator Reverse Power Warning | |
| 2452 17 | Generator Reverse Power Warning — GEN REVERSE POWER WARNING | Generator Reverse Power Warning | |
| 2456 | Generator Reactive Power (VAR) | ||
| 2648 | Maintenance INTERVAL Service Hyormation Interval Warning WARNING Interval Warning | ||
| 2648 31 | Service Maintenance Interval Warning — SERV MAINT INTERVAL WARNING | Service Information Interval Warning | |
| 3111 | 0 | ||
| 4000 | ATS in Normal ATS IN NORMAL Digital Input Circuit Position POSITION Fault | ||
| 4000 | Air Shutoff Damper Close Shutdown | ||
| 4000 31 | Air Damper Closed — AIR DAMPER CLOSED | Digital Input Circuit Fault | |
| 4001 | ATS in Normal Position | ||
| 4001 31 | ATS in Normal Position — ATS IN NORMAL POSITION | Digital Input Circuit Fault | |
| 4002 | Gen Supplying Load | ||
| 4002 31 | ATS in Emergency Position — ATS IN EMERGENCY POSITION | Digital Input Circuit Fault | |
| 4003 | Battery Charger CHARGER FAILURE Digital Input Circuit Failure Fault | ||
| 4003 31 | Battery Charger Failure — BATTERY CHARGER FAILURE | Digital Input Circuit Fault | |
| 4004 | Gen Breaker Closed | ||
| 4004 31 | Generator Circuit Breaker Closed — GENERATOR BREAKER CLOSED | Digital Input Circuit Fault | |
| 4005 | Utility Circuit UTILITY BREAKER || Digital Input Circuit Breaker Closed CLOSED Fault | ||
| 4005 31 | Utility Circuit Breaker Closed — UTILITY BREAKER CLOSED | Digital Input Circuit Fault | |
| 4006 | Engine in Cooldown Shutdown | ||
| 4006 31 | Engine in Cooldown — ENGINE IN COOLDOWN | Engine Cooldown Warning | |
| 4007 | Generator Control GEN CONTROL Generator Control Not NOTIN AUTO In Automatic Warning WARNING | ||
| 4007 31 | Generator Control Not in Automatic Warning — GEN CONTROL NOT IN AUTO WARNING | Generator Control Not in Automatic Warning | |
| 4008 | Unexpected Engine Shutdown | ||
| 4008 31 | Unexpected Engine Shutdown — UNEXPECTED ENGINE SHUTDOWN | Unexpected Engine Shutdown | |
| 4009 | Generator Breaker Failure to Open | ||
| 4010 | Utility Breaker Failure to Open | ||
| 4015 | Utility to Generator Transfer Failure Warning/Shutdown | ||
| 4016 | Generator to Utility Transfer Failure Warning | ||
| 4017 | Loss of Utility | ||
| 7427 | Overspeed | ||
| 8234 | Load reduction from alarm system to LESS | ||
| 9401 | Engine speed binary suppression of alarms | ||
| 9402 | Engine speed binary start stand-by pump | ||
| 9404 | Overspeed – alarm binary | ||
| 9406 | Switch off lube oil stand-by pump binary | ||
| 9407 | Engine speed binary n adjustable | ||
| 9419 | Engine speed signal From RPM switching equipment – indication, DICARE 4-20 mA | ||
| 9419.1 | Pick up RPM switching equipment 0-15 KHz | ||
| 9429A | Turbine speed high – alarm Turbine speed – indication, DICARE 4-20 mA 0-10 V | ||
| 9503 | Limit switch Control lever at fuel rack – stop position binary | ||
| 9509 | Distance sensor / switching device Fuel setting 4-20 mA | ||
| 9531 | Engine overload at rated speed binary | ||
| 9602 | Relay contact CANbus failure – alarm binary | ||
| 9615 | Failure electrical governor – minor alarm binary | ||
| 9616 | Failure mechanical governor – major alarm binary | ||
| 9671.1 | Automatic stop failure – alarm binary | ||
| 9671.2 | Overspeed failure – alarm binary | ||
| 9671.3 | Emergency failure – alarm binary | ||
| 9674 | Common alarm – alarm binary | ||
| 9674 | Overspeed - alarm | ||
| 9675 | Emergency stop – alarm binary | ||
| 9676 | Common alarm – load reduction binary | ||
| 9677.1 | Override oil mist detector activated binary | ||
| 9677.2 | Override load reduction activated binary | ||
| 9717 | Relay contact Voltage failure at terminal X3 – alarm binary | ||
| 9751 | Voltage failure at charge air temperature controller binary | ||
| 9771 | Fresh water preheater voltage failure binary | ||
| 9836.1 | Relay contact Sensor / isolation fault A01 – alarm binary | ||
| 9836.2 | Relay contact Sensor / isolation fault A02 – alarm binary | ||
| 9962.1 | Relay contact Common alarm A01 – alarm binary | ||
| 9962.2 | Relay contact Common alarm A02 – alarm binary | ||
| 12339 3 | FUEL TANK LEAK Fault | Digital Input Circuit | |
| 102461492 | Engine Overspeed Warning | ||
| 102461493 | Engine Underspeed Warning — ENGINE UNDERSPEED SHUTDOWN or ENGINE UNDERSPEED WARNING will be displayed on the EMCP 3 | The EMCP 3 determines that an engine underspeed condition has occurred (engine speed drops below the Engine Underspeed Threshold setpoint value) | Determine the conditions that caused the underspeed condition; reset the genset, resume normal operation and verify that the problem has been corrected |
| 102461494 | Generator Output Sensing Circuit Fault — GENERATOR OUTPUT SENSING CIRCUIT FAULT is made active | The engine is running and the EMCP 3 is receiving AC voltage and current information, but not processing any AC measurements; the EMCP 3 has failed | Perform the following procedure: Electronic Control Module (Generator Set) - Replace |
| 102461495 | Generator Overcurrent Warning — GEN OVER CURRENT SHUTDOWN or GEN OVERCURRENT WARNING will be displayed on the EMCP 3 | The EMCP 3 detects an overcurrent condition that persists for a duration that is a function of the over current level or a condition that exceeds a threshold for a programmed duration (RMS current of any phase goes above the Generator Definite Time Over Current (Amp) Percentage Threshold) | |
| 102463431 | Engine Speed Warning — ENG SPEED-GEN FREQ MISMATCH WARN will be displayed on the EMCP 3 | Engine speed and frequency values mismatch by more than 10% for more than 10 seconds | Check for active diagnostic codes on the engine ECM and the EMCP 3 and correct them first; view the setpoints (number of generator poles) and (flywheel teeth) and compare against the default setpoints; reprogram the setpoints if not correct; reset the genset and verify the problem has been corrected |
| 102463551 | Data Link Circuit Fault | An open circuit or a short circuit in a Data Link (J1939 Accessory Data Link; J1939 Primary Data Link; Modbus RS-485 SCADA Data Link) | Inspect the EMCP 3 connector, the service tool connector, and all other connectors in the circuit for the data link; check for shorts in the Modbus RS-485 SCADA Data Link harness (resistance greater than 20,000 Ohms); check the resistance through the Modbus RS-485 SCADA Data Link harness (less than 10 Ohms); check for shorts in the J1939 Data Link harness; repair the wiring or replace the wiring |
| 102464543 | Engine Speed Circuit Fault | The EMCP 3 has determined that an incorrect signal from the engine speed sensor has occurred or an overspeed/underspeed condition has occurred | Check for active diagnostic codes on the engine ECM and the EMCP 3 and correct them first; view the Engine Speed Monitor Setpoints and compare against the default setpoints, reprogram if not correct; check the harness and the speed sensor (resistance from contact 66 to contact 67 should be from 100 to 350 ohms); check for an intermittent fault; check the resistance of the engine speed sensor |
| 102464689 | Generator Reverse Power Warning — GEN REVERSE POWER SHUTDOWN or GEN REVERSE POWER WARNING will be displayed on the EMCP 3 | The EMCP 3 determines that a generator reverse power condition has occurred (current rises above the Generator Reverse Power Percentage Threshold setpoint value) | Determine the conditions that caused the reverse power condition; reset the genset, resume normal operation and verify that the problem has been corrected |
| 102464700 | Generator Control Not in Automatic Warning — GEN CONTROL NOT IN AUTO WARNING will be displayed on the EMCP 3 | The genset control is not in AUTO mode | No repair to the engine is necessary; determine the conditions that caused the diagnostic code (generator was placed into a mode other than AUTO by the operator or by a Modbus RS-485 SCADA data link message) |
| $0000 | Valid Data | ||
| $0001 | Error | ||
| $83 | Exception Response to Read Registers Query | ||
| $86 | Exception Response to Write Single Register Query | ||
| $90 | Exception Response to Write Multiple Registers Query | ||
| active fault code | Electronic problem detected | ||
| AL | The GSC+P FLASHES the fault alarm indicator and shows a corresponding fault code on the upper display. | Correct the alarm fault. | |
| AL1 | High Water Temperature Alarm — fault alarm indicator will FLASH; AL1 fault code is shown on the upper display after the "Alarm Fault Codes" key is pressed | Coolant temperature increases to within 6°C (11°F) of setpoint P015 | Refer to the Troubleshooting, "Troubleshooting Dedicated Shutdown Indicators" |
| AL2 | Low Water Temperature Alarm — fault alarm indicator will FLASH and the AL2 fault code is shown on the upper display after the "Alarm Codes" key is pressed | The engine coolant temperature decreases to setpoint P16 (low water temperature alarm) | |
| AL2 | Low Engine Coolant Temperature Alarm | Coolant temperature decreases to setpoint P016 | Refer to the Troubleshooting, "Troubleshooting Dedicated Shutdown Indicators" |
| AL3 | Alarm for Low Engine Oil Pressure — fault alarm indicator will FLASH and the "AL3" fault code is shown on the upper display after the "Alarm Codes" key is pressed | Oil pressure drops to within 34 kPa (5 psi) of the P013 or P014 setpoint | Refer to the Troubleshooting, "Troubleshooting Dedicated Shutdown Indicators" |
| AL4 | Fault Detected By The Engine ECM — when programmed as a shutdown fault, the fault shutdown indicator will FLASH and the "AL4" fault code is immediately shown on the upper display; when programmed as an alarm fault, the fault alarm indicator will FLASH and the AL4 fault code is shown on the upper display after the alarm codes key is pressed | The Electronic Control Module (ECM) for the engine detects an alarm fault or a shutdown fault; the occurrence of an AL4 fault code could mean that the engine ECM is not programmed correctly | For the particular engine, refer to the Troubleshooting Service Module |
| AL5 | Low Engine Coolant Level Fault — when programmed as a shutdown fault, the fault shutdown indicator will FLASH and the AL5 fault code is immediately shown on the upper display; when programmed as an alarm fault, the fault alarm indicator will FLASH and the "AL5" fault code is shown on the upper display after the "Alarm Codes" key is pressed | The engine coolant level drops below the probe of the coolant loss sensor for ten seconds | Check level of engine coolant. The level of engine coolant must be above the probe of the sensor; Check for CID 111 faults; Perform the electrical connector inspection test. Refer to the Testing and Adjusting, "Electrical Connector - Inspect" |
| AL6 | High Engine Oil Temperature Fault — when programmed as a shutdown fault, the fault shutdown indicator will FLASH and the "AL6" fault code is immediately shown on the upper display; when programmed as an alarm fault, the fault alarm indicator will FLASH and the "AL6" fault is shown on the upper display after the "Alarm Codes" key is pressed | The engine oil temperature rises to within 6 °C (11 °F) setpoint P026 | Check level of engine coolant. The level of engine coolant must be above the probe of sensor; Check fan belt, etc.; Check P026 setpoint |
| AL7 | Generator Over Voltage Fault (protective relaying function) | The line to line voltage between any two phases of the generator rises above the P102 setpoint or the P105 setpoint | |
| AL7 | Generator Overvoltage Fault | Line to line voltages rises above the P102 or P105 setpoints | Refer to the service manual for the voltage regulator that is being used; Check P101 through P106 setpoints |
| AL8 | Generator Undervoltage Fault | Line to line voltage drops below the P108 or the P111 setpoints | Refer to the service manual for the voltage regulator that is being used; Check P107 through P112 setpoints; Refer to the engine service manual for the cause of low engine speed. If engine speed is reduced and the engine control switch (ECS) is NOT in STOP, the GSC+P will issue this fault |
| AL9 | Generator Overfrequency Fault | Frequency rises above the P114 or P117 setpoints | Refer to the Troubleshooting, "Indicator For Engine Overspeed"; Check setpoints P113 through P118 |
| AL10 | Generator Underfrequency Fault | Frequency drops below the P120 or P123 setpoints | Refer to the engine service manual for a cause of low engine speed. If engine speed is reduced and the ECS is NOT in STOP, the GSC+P will issue this fault; Check setpoints P119 through P124 |
| AL11 | Generator Reverse Power Fault | Reverse power rises above the P126 setpoint | Refer to the engine service manual for a cause of lost engine power; Check setpoints P125 through P127 |
| AL12 | Generator Phase Overcurrent Fault | Phase current rises above the P129 or P134 setpoints | Check for a cause of the overcurrent; Check setpoint P029 and setpoints P128 through P135 |
| AL13 | Generator Total Overcurrent Fault | Total current rises above the P131 or P136 setpoints | Check for a cause of the overcurrent; Check setpoint P029 and setpoints P128 through P137 |
| AL14 | Phase A No Voltage Input Fault | Phase A voltage not being received at GSC+P input | Check for an open circuit on the wire that is connected to the GSC+P connector pin 10; Check for a short on the wire that is connected to the GSC+P connector pin 10; Refer to the Testing And Adjusting, "Schematics and Wiring Diagrams" |
| AL16 | Incorrect Phase Sequence | The generator and the bus have a phase mismatch | Check for the cause of the phase sequence mismatch; Check wiring to the bus transformer box (BTB +) and the AC transformer box (ATB +) |
| AL17 | Improper generator or bus voltage | The generator voltage or the bus voltage are either too low or the voltages do not match | The generator voltage and the bus voltage must be above 10% of the nameplate voltage in P028 when setpoint P020 is set to 700. Generator voltage and bus voltage must be above 50% of the nameplate voltage in P028 when setpoint P020 is set to any other value than 700; Check Setpoints P303 and P304 in order to determine whether the generator voltage and the bus voltage match within the tolerance that is specified |
| AL18 | Synchronizer Time-Out | The GSC+P is unable to complete automatic synchronization or dead bus paralleling within the time allowed in P314 | Check for cause of synchronization time-out; Ensure that the engine is responding properly to the GSC+P Speed Adjust 1 Output signal; Check for wiring errors; Check setpoints P313 and P314 for proper values. Increase the values, if necessary |
| Analog - 03 to 04 | The analog supply voltage is not 5.0 + 0.5 VDC when measured between P1-36 (997-OR) and P1-30 (993-BR). | Check the sensor connections and wiring. | |
| Analog Input Circuit Fault | Analog Input Circuit Fault | The measured Spare Analog Input value goes above or below the programmed threshold for a configurable duration | |
| Charging System | Charging System — “HIGH BATTERY VOLTAGE SHUTDOWN” or “HIGH BATTERY VOLTAGE WARNING” will be displayed on the EMCP 3 for a high battery voltage condition; “LOW BATTERY CHARGING SYS VOLT WARN” or “LOW BATTERY VOLTAGE WARNING” will be displayed on the EMCP 3 for an undervoltage condition | The measured battery voltage value goes above or below the programmed thresholds for a configurable duration | |
| CID 0100 FMI 02 | Pressure sensor (engine oil) — the GSC+P is unable to receive any valid data about the oil pressure from the engine ECM | There is an open in the circuit for the CAT data link. The open is between the engine ECM and the GSC+P; There is a short or a failure in the oil pressure sensor that is connected to the engine ECM | View the diagnostic code that is displayed on the upper display panel of the EMCP II+P. Determine if the diagnostic code is originating from the Engine ECM. If there is a letter "E" after the number of the CID, troubleshoot the diagnostic code for the Engine ECM. Refer to Troubleshooting, RENR9348 or System Operation Testing and Adjusting, RENR9968. If there is not a letter "E", there may be a problem with the CAT Data Link. Determine if CID 0248 FMI 09 is present. Refer to Diagnostic Code Procedures, "GSC CID 0248 - FMI 09" |
| CID 0110 FMI 02 | Engine coolant temperature sensor — the GSC+P is unable to receive valid coolant temperature data from the engine ECM | There is an open circuit on the CAT data link between the engine ECM and the GSC+P; There is a problem with the temperature sensor that is connected to the engine ECM | If a CID 0248 FMI 09 for the CAT data link is active, correct the diagnostic code prior to proceeding. Verify the diagnostic code: if there is a letter "E" after the number of the CID, troubleshoot the diagnostic code for the Engine ECM (Refer to Troubleshooting, RENR9348 or System Operation Testing and Adjusting, RENR9968); if there is not a letter "E", proceed to Test Step 2. Test Step 2: Turn the ECS to the OFF/RESET position; disconnect the harness connector from the GSC+P; disconnect the harness connector from the engine ECM; at the harness connector for the engine ECM, connect a jumper wire between pin J1-9 and pin J1-3; at the harness connector for the GSC+P, measure the resistance between pin 19 and pin 20. If the resistance is less than 5 ohms, there is a problem with the temperature sensor; reconnect the harness connectors for the engine ECM and the GSC+P and refer to Troubleshooting, SENR1003, "3500B EPG Engines" or Troubleshooting, RENR2227, "3406E EPG Engines". If the resistance is greater than 5 ohms, there is an open circuit in the CAT data link between the GSC+P and the engine ECM; repair the wiring harness or replace the wiring harness |
| CID 111 | Coolant loss sensor | The sensor has failed | Correct the active CID 111. Refer to Testing And Adjusting, "Troubleshooting Diagnostic Codes". |
| CID 0111 FMI 03 | Engine Coolant Loss Sensor (ECLS) — the CID 111 FMI 3 is automatically shown on the upper display | A short from "BATT+" to the sensor signal; An open circuit of the sensor signal | Begin performing these procedures only when CID 111 FMI 3 is showing and the "DIAG" indicator is FLASHING on the upper display. For an inactive fault, the problem may be intermittent; refer to Testing And Adjusting, "Electrical Connector - Inspect" in order to troubleshoot an inactive fault. Clear the fault from the fault log after troubleshooting is complete. If a CID 269 FMI 3 or a CID 269 FMI 4 is active, correct the diagnostic code prior to proceeding. Test Step 1: Turn the ECS to OFF/RESET, then turn the ECS to the STOP position; disconnect the sensor from the engine harness (the sensor remains fastened to the engine); at the engine harness side of the sensor connector, measure the voltage (DCV) that is between pin "A" and pin "B" (pin "A" is the supply for the sensor, pin "B" is the sensor ground) |
| CID 111 FMI 3 | Speed sensor, camshaft gear | The signal circuit within the engine harness is shorted to BATT+; The GSC+P or the harness has failed; The sensor has failed; The harness wiring with incorrect resistance is shorted in the harness; The harness wiring with incorrect resistance measurement is open; The GSC+P may have failed | Troubleshoot and repair the engine harness; Proceed to Test Step 4; Replace the sensor; Troubleshoot and repair the failed harness wiring between the sensor connector and the GSC+P harness connector; Repair the area with the problem; Exit this procedure and perform this entire procedure again, if the problem remains, replace the GSC+P |
| CID 168 E 00 | Battery voltage above normal (Engine ECM) | The engine is running and the battery voltage is greater than 32 DCV more than two seconds | |
| CID 168 E 01 | Battery voltage below normal (Engine ECM) | The engine is not running and the battery voltage is less than 9 DCV for more than two seconds | |
| CID 168 E 02 | Battery voltage below normal (Engine ECM) | The engine is not running. The battery voltage is less than 9 DCV for a period of .07 seconds. The battery voltage then returns to 9 DCV (or greater). The other possible diagnostic code cause is that the battery voltage goes below 9 DCV three times in seven seconds | |
| CID 168 FMI 03 | Electrical system voltage above normal — GSC+P treats a CID 168 fault as an alarm fault | Battery voltage is greater than the P007 limit (greater than 32 DCV for 24 volt system; greater than 45 DCV for 32 volt system) | |
| CID 168 FMI 04 | Electrical system voltage below normal | Regardless of the engine status, the battery voltage is less than 18 DCV | |
| CID 190 FMI 3 | Engine Magnetic Pickup (MPU) faulty — signal voltage is too high | ||
| CID 248 FMI 9 | CAT Data Link fault — GSC+P treats a CID 248 FMI 9 as an alarm fault | A short to the positive battery terminal (BATT+) of either of the two CAT Data Link wires; A short to the negative battery terminal (BATT-) of either of the two CAT Data Link wires | Troubleshoot and repair the wiring; Repair any shorts between BATT+ and the CAT Data Link wires; Repair any shorts between the disconnected negative battery cable and the CAT Data Link wires; Clear the fault from the fault log after troubleshooting is complete |
| CID 268 | GSC internal memory fault | ||
| CID 0268 FMI 02 | Setpoint data invalid or out of range — GSC+P treats a CID 0268 FMI 02 as an alarm fault or as a shutdown fault depending on the particular setpoint with bad data | Electrical interference | Clear the diagnostic code from the fault log after troubleshooting is complete |
| CID 269 | Sensor power supply | The sensor supply is shorted to battery positive in the engine harness | Troubleshoot and repair the engine harness |
| CID 0269 FMI 03 | Sensor supply voltage fault | The engine harness has a short to BATT+; The GSC+P may have failed | Repair the engine harness or replace the engine harness; Exit this procedure and perform this entire procedure again, if the problem remains, replace the GSC+P |
| CID 269 FMI 3 | Sensor Power Supply Voltage Above Normal | The GSC is faulty; the engine harness has a short to the "B+" | Repair the engine harness; replace the GSC |
| CID 0269 FMI 04 | Sensor supply voltage less than 7.5 DCV — GSC+P treats a CID 0269 FMI 04 as an alarm fault | The voltage of the sensor supply is less than 7.5 DCV; The engine harness or a sensor has failed; The GSC+P has failed | Proceed to Test Step 2; Replace the GSC+P; Clear the diagnostic code from the fault log after the troubleshooting procedure is completed |
| CID 269 FMI 4 | Sensor Power Supply Voltage Below Normal | The voltage of the sensor power supply is less than 7.5 DCV; the GSC is faulty; the engine harness or a sensor is faulty | Replace the GSC; check the fluid level sensor (engine coolant) |
| CID 330 FMI 7 | Unexpected Shutdown Improper Mechanical Response | A component that is not under the control of the GSC has caused an engine shutdown | |
| CID 330 FMI 7 | Verify the diagnostic code | Observe the upper display; check that the CID 330 FMI 7 is showing; if only a CID 330 FMI 7 is showing, proceed to 3 (if an inactive CID 330 FMI 7 is showing in the fault log, check the history of the genset and proceed to 3) | |
| CID 331 FMI 2 | Switch (Engine Control) Incorrect Signal | None of the GSC inputs from the ECS are connected to ground; More than one of the GSC inputs from the ECS is connected to ground ("B-") at the same time | Check for an open circuit: disconnect the remote start/stop contacts by removing the wire from terminal TS1-14; disconnect the harness connector from the GSC; for each position of the ECS, the corresponding contact of the GSC harness connector is the only contact that is connected to ground ("B-"); measure resistance at the GSC harness connector for each ECS position (OFF/RESET: contact 39 to "B-" 5 ohms or less, contacts 32, 33 and 40 greater than 5000 ohms; AUTO: contact 40 to "B-" 5 ohms or less, contacts 32, 33 and 39 greater than 5000 ohms; MAN/START: contact 33 to "B-" 5 ohms or less, contacts 32, 39 and 40 greater than 5000 ohms; COOLDOWN/STOP: contact 32 to "B-" 5 ohms or less, contacts 33, 39 and 40 greater than 5000 ohms); if all resistance measurements are correct, go to Testing And Adjusting, "Electrical Connector - Inspect"; if one or more measurements are NOT correct, troubleshoot the ECS and/or repair the faulty harness wiring between ground ("B-") and the GSC connector; clear the diagnostic code from the fault log after troubleshooting is complete |
| CID 333 FMI 3 | Alarm Module Control Voltage Above Normal | ||
| CID 333 FMI 4 | Alarm Module Control Voltage Below Normal | ||
| CID 334 FMI 3 | Spare Output Voltage Above Normal | ||
| CID 334 FMI 4 | Spare Output Voltage Below Normal | ||
| CID 336 FMI 2 | Switch (Engine Control) Incorrect Signal | None of the GSC inputs from the ECS are connected to ground; More than one of the GSC inputs from the ECS is connected to ground ("B-") at the same time | Check for an open circuit: disconnect the remote start/stop contacts by removing the wire from terminal TS1-14; disconnect the harness connector from the GSC; for each position of the ECS, the corresponding contact of the GSC harness connector is the only contact that is connected to ground ("B-"); clear the diagnostic code from the fault log after troubleshooting is complete |
| CID 441 FMI 12 | Electronic Governor Relay Failed | ||
| CID 442 FMI 12 | Generator Fault Relay Failed | ||
| CID 443 FMI 12 | Crank Termination Relay Failed | ||
| CID 444 FMI 12 | Starting Motor Relay Failed | ||
| CID 445 FMI 12 | Run Relay Failed | ||
| CID 446 FMI 12 | Air Shutoff Relay Failed | ||
| CID 447 FMI 12 | Fuel Control Relay Failed | ||
| CID 500 FMI 12 | EMCP Electronic Control (Generator Set) Failed | ||
| CID 560 FMI 11 | CAT Data Link Failure Mode Not Identified | ||
| CID 566 FMI 7 | Unexpected Shutdown Improper Mechanical Response | A component that is not under the control of the GSC has caused an engine shutdown | Perform an initial check: make sure that there are NO OTHER ACTIVE FAULTS; check the fuel level and the fuel quality; check for a plugged fuel filter; check for a plugged air filter; refer to the Engine Service Manual if there is an obvious engine fault or an obvious fault with the fuel system; if the generator set is equipped with an electronic governor, check the speed sensor; check the air shutoff solenoid for activation (if the air shutoff solenoid is activated and cannot be deactivated, begin troubleshooting with 20, otherwise begin troubleshooting with 2); verify the diagnostic code by observing the upper display and checking that the CID 566 FMI 7 is showing; clear the diagnostic code from the fault log after troubleshooting is complete |
| CID 590 FMI 9 | Engine Electronic Control Module Abnormal Update | ||
| CID 0770 FMI 09 | CCM data link fault — GSC+P treats a CID 0770 as an alarm fault | A short to BATT+ from either one of the two connector pins, 21 or 22; A short from the negative battery terminal (BATT-) to either of the two connector pins, 21 or 22; The failure is intermittent, the probable cause is a poor electrical connection | Repair the wiring or replace the wiring; Check the wiring and repair the wiring, as needed; Clear the fault from the fault log after troubleshooting is complete |
| CID 0858 FMI 03 | Close breaker control output fault | The GSC+P may have failed; The wiring harness has failed between the BTB + and the generator | Exit this procedure and perform this entire procedure again, if the problem remains, replace the GSC+P; Repair the wiring harness or replace the wiring harness |
| CID 1168 FMI 3 | Dead Bus Sensor — Voltage above normal | ||
| CID 1168 FMI 4 | Dead Bus Sensor — Voltage below normal | ||
| CID 1169 FMI 2 | AC Transformer Box Sensor — Incorrect signal | ||
| CID 1170 FMI 2 | Bus Transformer Box Sensor — Incorrect signal | ||
| CID 1170 FMI 4 | Bus Transformer Box Sensor — Voltage below normal | ||
| CID 1170 FMI 8 | Bus Transformer Box Sensor — Abnormal signal | ||
| CID 1178 FMI 3 | Pressure Sensor For Machine Overload Warning — Voltage above normal | ||
| Data Link Circuit Fault | Data Link Circuit Fault | An open circuit or a short circuit in one of the Data Links (J1939 Accessory Data Link, J1939 Primary Data Link, Modbus RS-485 SCADA Data Link) | |
| Diagnostic Flash Code | The “DIAGNOSTIC” lamp flashes in order to indicate a two-digit code. | ||
| Diagnostic Lamp flashes a fault code | General engine fault | Refer to the Messenger display for any additional information that may be available. | |
| Digital - 03 to 04 | The digital supply voltage is not 8.0 + 0.5 VDC when measured between P1-35 (700-OR) and P1-29 (998-BR). | Check the sensor connections and wiring. | |
| Digital Input Circuit Fault | Digital Input Circuit Fault | The digital input is active. The code may indicate a problem exists with the genset or the code may also indicate a status that does not need to be repaired | |
| E0190 | Overspeed — the "DIAGNOSTIC" lamp will indicate a diagnostic fault code; the diagnostic fault code will remain active until the engine speed drops to 2800 rpm | Engine speed exceeds 3300 rpm | |
| g00604607 | The fault alarm indicator (3) flashes when the GSC detects an alarm fault. | ||
| g00634142 | The yellow fault alarm indicator (26) FLASHES when the GSC+ detects an alarm fault. | ||
| Generator Overvoltage Warning | Generator Overvoltage Warning — “GEN OVERVOLTAGE SHUTDOWN” or “GEN OVERVOLTAGE WARNING” will be displayed on the EMCP 3 | The EMCP 3 determines that a generator overvoltage condition has occurred (voltage rises above the Generator Overvoltage Percentage Threshold setpoint value) | |
| Generator Reverse Power Warning | Generator Reverse Power Warning | The current rises above the Generator Reverse Power Percentage Threshold setpoint value | |
| Generator Undervoltage Warning | Generator Undervoltage Warning — “GEN UNDERVOLTAGE SHUTDOWN” or “GEN UNDERVOLTAGE WARNING” will be displayed on the EMCP 3 | The EMCP 3 determines that a generator undervoltage condition has occurred (voltage drops below the Generator Undervoltage Percentage Threshold and Automatic Voltage Regulator (AVR) Request setpoint value) | |
| i00932023 | E spare data output is deactivated | ||
| i01190421 | Low power or poor performance in the winter | Before troubleshooting for low power or for poor performance in the winter, check the type of fuel that is being used. When No. 2 diesel fuel is used the following components provide a means of minimizing problems in cold weather: • Starting aids • Engine oil pan heaters • Engine coolant heaters • Fuel heaters • Fuel line insulation | |
| i01197515 | SMCS Code: 1000 | • Check the crankcase oil level. Maintain the oil level between the “ADD” mark and the “FULL” mark on the oil level gauge. • If necessary, perform minor adjustments. Repair any leaks and tighten any loose bolts. • Note the service hour meter reading. Perform the maintenance that is in the Operation and Maintenance Manual, “Maintenance Interval Schedule”. | |
| i01226491 | Engine overspeed | Stop the engine by shutting off the fuel supply to the engine and/or shutting off the air supply to the engine. | |
| i01324368 | An intermittent failure in the TPS causes the engine speed to vary erratically. | ||
| i01324374 | Engine Operation with Active Diagnostic Codes | If the diagnostic lamp starts to flash codes during normal engine operation, the system has identified a situation that is not within the specification. Use Caterpillar electronic service tools to check the active diagnostic codes. | |
| i01456915 | Engine Operation with Intermittent Diagnostic Codes | If the diagnostic lamp starts to flash codes during normal engine operation and the diagnostic lamp shuts off, an intermittent fault may have occurred. If a fault has occurred, the fault will be logged into the memory of the Electronic Control Module (ECM). | |
| i01462046 | Engine Stopping | Stop the engine according to the procedure in the Operation and Maintenance Manual, “Engine Stopping (Operation Section)” in order to avoid overheating of the engine and accelerated wear of the engine components. Use the Emergency Stop Button (if equipped) ONLY in an emergency situation. Do not use the Emergency Stop Button for normal engine stopping. After an emergency stop, DO NOT start the engine until the problem that caused the emergency stop has been corrected. | |
| i01463504 | Fault Logging | The system provides the capability of Fault Logging. When the Electronic Control Module (ECM) generates an active diagnostic code, the code will be logged in the memory of the ECM. | |
| i02710753 | Engine may not start properly due to severely discharged battery. | After jump starting, the alternator may not be able to fully recharge batteries that are severely discharged. The batteries must be replaced or charged to the proper voltage with a battery charger after the engine is stopped. | |
| i02897975 | An alarm fault is occurring. | An alarm fault is not critical but an alarm fault is potentially serious. An alarm fault can be protective relaying functions that have been enabled as an alarm fault. | |
| logged fault | Problem has occurred, but is not presently active | ||
| LOW BATTERY CHARGING SYS VOLT WARN | “LOW BATTERY CHARGING SYS VOLT WARN” or “LOW BATTERY VOLTAGE WARNING? will be displayed on the EMCP 3. | The measured battery voltage value goes above or below the programmed thresholds for a configurable duration. | |
| Not specified in text | The red fault shutdown indicator (25) FLASHES when the GSC+ detects a shutdown fault. | ||
| null | Increased coolant temperature | ||
| Ow | SHORT LOW | ||
| SMCS Code: 4490 | Data Link Circuit Fault | ||
| SP1 | Spare Fault 1 | On generators equipped with the optional reverse power relay, the relay is always connected to the spare fault 1 (SP1) input of the GSC; an SP1 fault code is shown when the reverse power relay has opened | Check for obvious causes which are related to the device that is responsible for the spare fault; Verify that the programming of the spare fault (alarm or shutdown) is appropriate for the application; Check the function of the responsible device. Reset the fault by turning the Engine Control Switch (ECS) to the OFF/RESET position. Verify that the fault is still present; Disconnect the responsible device from the spare fault input and verify if the fault still exists; Check the wiring to the corresponding spare fault input for an unwanted short. The short can be to the negative battery terminal (BATT-). Also, the short can be to the positive battery terminal (BATT+) |
| SP2 | Spare Fault 2 | Check for obvious causes which are related to the device that is responsible for the spare fault; Verify that the programming of the spare fault (alarm or shutdown) is appropriate for the application; Check the function of the responsible device. Reset the fault by turning the Engine Control Switch (ECS) to the OFF/RESET position. Verify that the fault is still present; Disconnect the responsible device from the spare fault input and verify if the fault still exists; Check the wiring to the corresponding spare fault input for an unwanted short. The short can be to the negative battery terminal (BATT-). Also, the short can be to the positive battery terminal (BATT+) | |
| SP3 | Spare Fault 3 | Check for obvious causes which are related to the device that is responsible for the spare fault; Verify that the programming of the spare fault (alarm or shutdown) is appropriate for the application; Check the function of the responsible device. Reset the fault by turning the Engine Control Switch (ECS) to the OFF/RESET position. Verify that the fault is still present; Disconnect the responsible device from the spare fault input and verify if the fault still exists; Check the wiring to the corresponding spare fault input for an unwanted short. The short can be to the negative battery terminal (BATT-). Also, the short can be to the positive battery terminal (BATT+) | |
| SP4 | Spare Fault 4 | Check for obvious causes which are related to the device that is responsible for the spare fault; Verify that the programming of the spare fault (alarm or shutdown) is appropriate for the application; Check the function of the responsible device. Reset the fault by turning the Engine Control Switch (ECS) to the OFF/RESET position. Verify that the fault is still present; Disconnect the responsible device from the spare fault input and verify if the fault still exists; Check the wiring to the corresponding spare fault input for an unwanted short. The short can be to the negative battery terminal (BATT-). Also, the short can be to the positive battery terminal (BATT+) | |
| SPN 38 FMI 0 | External Tank High Fuel Level Shutdown — EXT TANK HIGH FUEL LEVEL S/D | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 38 FMI 1 | External Tank Low Fuel Level Shutdown — EXT TANK LOW FUEL LEVEL S/D | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 38 FMI 3 | External Tank Fuel Level Sensor Short High — EXT TANK FUEL LEVEL SENSOR SHORT HIGH | Analog Input Circuit Fault | |
| SPN 38 FMI 4 | External Tank Fuel Level Sensor Short Low — EXT TANK FUEL LEVEL SENSOR SHORT LOW | Analog Input Circuit Fault | |
| SPN 38 FMI 17 | External Tank Low Fuel Level Warning — EXT TANK LOW FUEL LVL WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 38 FMI 46 | External Tank High Fuel Level Warning — EXT TANK HIGH FUEL LVL WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 82 FMI 0 | High Starting Air Pressure Shutdown — HIGH STARTING AIR PRES SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 82 FMI 1 | Low Starting Air Pressure Shutdown — LOW STARTING AIR PRES SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 82 FMI 3 | Starting Air Pressure Sensor Short High — STARTING AIR PRES SENSOR SHORT HIGH | Analog Input Circuit Fault | |
| SPN 82 FMI 4 | Starting Air Pressure Sensor Short Low — STARTING AIR PRES SENSOR SHORT LOW | Analog Input Circuit Fault | |
| SPN 82 FMI 15 | High Starting Air Pressure Warning — HIGH STARTING AIR PRES WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 82 FMI 17 | Low Starting Air Pressure Warning — LOW STARTING AIR PRES WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 95 FMI 0 | High Fuel Filter Differential Pressure Shutdown — HIGH FUEL FLTR DIFF PRES SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 95 FMI 1 | Low Fuel Filter Differential Pressure Shutdown — LOW FUEL FILTER DIFF PRES SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 95 FMI 3 | Fuel Filter Differential Pressure Sensor Short High — FUEL FLTR DIFF PRES SENSOR SHORT HIGH | Analog Input Circuit Fault | |
| SPN 95 FMI 4 | Fuel Filter Differential Pressure Sensor Short Low — FUEL FLTR DIFF PRES SENSOR SHORT LOW | Analog Input Circuit Fault | |
| SPN 95 FMI 16 | High Fuel Filter Differential Pressure Warning — HIGH FUEL FLTR DIFF PRES WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 95 FMI 17 | Low Fuel Filter Differential Pressure Warning — LOW FUEL FILTER DIFF PRES WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 96 FMI 0 | High Fuel Level Shutdown — HIGH FUEL LEVEL SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 96 FMI 1 | Low Fuel Level Shutdown — LOW FUEL LEVEL SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 96 FMI 3 | Fuel Level Sensor Short High — FUEL LEVEL SENSOR SHORT HIGH | Analog Input Circuit Fault | |
| SPN 96 FMI 4 | Fuel Level Sensor Short Low — FUEL LEVEL SENSOR SHORT LOW | Analog Input Circuit Fault | |
| SPN 96 FMI 15 | High Fuel Level Warning — HIGH FUEL LEVEL WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 96 FMI 17 | Low Fuel Level Warning — LOW FUEL LEVEL WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 98 FMI 0 | High Engine Oil Level Shutdown — HIGH ENGINE OIL LVL SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 98 FMI 1 | Low Engine Oil Level Shutdown — LOW ENGINE OIL LVL SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 98 FMI 3 | Engine Oil Level Sensor Short High — ENGINE OIL LEVEL SENSOR SHORT HIGH | Analog Input Circuit Fault | |
| SPN 98 FMI 4 | Engine Oil Level Sensor Short Low — ENGINE OIL LEVEL SENSOR SHORT LOW | Analog Input Circuit Fault | |
| SPN 98 FMI 15 | High Engine Oil Level Warning — HIGH ENGINE OIL LVL WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 98 FMI 17 | Low Engine Oil Level Warning — LOW ENGINE OIL LVL WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 99 FMI 0 | High Oil Filter Differential Pressure Shutdown — HIGH OIL FILTER DIFF PRES SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 99 FMI 1 | Low Oil Filter Differential Pressure Shutdown — LOW OIL FILTER DIFF PRES SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 99 FMI 3 | Oil Filter Differential Pressure Sensor Short High — OIL FILTER DIFF PRES SENSOR SHORT HIGH | Analog Input Circuit Fault | |
| SPN 99 FMI 4 | Oil Filter Differential Pressure Sensor Short Low — OIL FILTER DIFF PRES SENSOR SHORT LOW | Analog Input Circuit Fault | |
| SPN 99 FMI 15 | High Oil Filter Differential Pressure Warning — HIGH OIL FILTER DIFF PRES WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 99 FMI 17 | Low Oil Filter Differential Pressure Warning — LOW OIL FILTER DIFF PRES WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 100 FMI 4 | Low Engine Oil Pressure Shutdown — LOW ENGINE OIL PRESS SHUTDOWN | Data Link Circuit Fault and Digital Input Circuit Fault | |
| SPN 100 FMI 17 | Low Engine Oil Pressure Warning — LOW ENGINE OIL PRESS WARNING | Data Link Circuit Fault and Digital Input Circuit Fault | |
| SPN 107 FMI 0 | High Air Filter Differential Pressure Shutdown — HIGH AIR FILTER DIFF PRES SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 107 FMI 1 | Low Air Filter Differential Pressure Shutdown — LOW AIR FILTER DIFF PRES SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 107 FMI 3 | Air Filter Differential Pressure Sensor Short High — AIR FILTER DIFF PRES SENSOR SHORT HIGH | Analog Input Circuit Fault | |
| SPN 107 FMI 4 | Air Filter Differential Pressure Sensor Short Low — AIR FILTER DIFF PRES SENSOR SHORT LOW | Analog Input Circuit Fault | |
| SPN 107 FMI 15 | High Air Filter Differential Pressure Warning — HIGH AIR FILTER DIFF PRES WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 107 FMI 17 | Low Air Filter Differential Pressure Warning — LOW AIR FILTER DIFF PRES WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 110 FMI 0 | High Engine Coolant Temperature Shutdown — HIGH ENGINE COOLANT TEMP SHUTDOWN | Data Link Circuit Fault and Digital Input Circuit Fault | |
| SPN 110 FMI 15 | High Engine Coolant Temperature Warning — HIGH ENGINE COOLANT TEMP WARNING | Data Link Circuit Fault and Digital Input Circuit Fault | |
| SPN 110 FMI 17 | Low Engine Coolant Temperature Warning — LOW COOLANT TEMP WARNING | Data Link Circuit Fault and Digital Input Circuit Fault | |
| SPN 111 FMI 0 | High Engine Coolant Level Shutdown — HIGH ENG COOL LEVEL SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 111 FMI 1 | Low Engine Coolant Level Shutdown — LOW ENG COOL LEVEL SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 111 FMI 3 | Engine Coolant Level Sensor Short High — ENGINE COOLANT LEVEL SENSOR SHORT HIGH | Analog Input Circuit Fault | |
| SPN 111 FMI 4 | Engine Coolant Level Sensor Short Low — ENGINE COOLANT LEVEL SENSOR SHORT LOW | Analog Input Circuit Fault | |
| SPN 111 FMI 15 | High Engine Coolant Level Warning — HIGH ENG COOL LEVEL WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 111 FMI 17 | Low Engine Coolant Level Warning — LOW ENG COOL LEVEL WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 167 FMI 17 | Low Battery Charging System Voltage Warning — LOW BATTERY CHARGING SYS VOLT WARN | Charging System | |
| SPN 168 FMI 0 | High Battery Voltage Shutdown — HIGH BATTERY VOLTAGE SHUTDOWN | Charging System | |
| SPN 168 FMI 15 | High Battery Voltage Warning — HIGH BATTERY VOLTAGE WARNING | Charging System | |
| SPN 168 FMI 17 | Low Battery Voltage Warning — LOW BATTERY VOLTAGE WARNING | Charging System | |
| SPN 171 FMI 0 | High Ambient Air Temperature Shutdown — HIGH AMBIENT AIR TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 171 FMI 1 | Low Ambient Air Temperature Shutdown — LOW AMBIENT AIR TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 171 FMI 3 | Ambient Air Temperature Sensor Short High — AMBIENT AIR TEMP SENSOR SHORT HIGH | Analog Input Circuit Fault | |
| SPN 171 FMI 4 | Ambient Air Temperature Sensor Short Low — AMBIENT AIR TEMP SENSOR SHORT LOW | Analog Input Circuit Fault | |
| SPN 171 FMI 16 | High Ambient Air Temperature Warning — HIGH AMBIENT AIR TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 171 FMI 17 | Low Ambient Air Temperature Warning — LOW AMBIENT AIR TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 173 FMI 0 | High Exhaust Temperature Shutdown — HIGH EXHAUST TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 173 FMI 1 | Low Exhaust Temperature Shutdown — LOW EXHAUST TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 173 FMI 3 | Exhaust Temperature Sensor Short High — EXHAUST TEMPERATURE SENSOR SHORT HIGH | Analog Input Circuit Fault | |
| SPN 173 FMI 4 | Exhaust Temperature Sensor Short Low — EXHAUST TEMPERATURE SENSOR SHORT LOW | Analog Input Circuit Fault | |
| SPN 173 FMI 15 | High Exhaust Temperature Warning — HIGH EXHAUST TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 173 FMI 17 | Low Exhaust Temperature Warning — LOW EXHAUST TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 175 FMI 0 | High Engine Oil Temperature Shutdown — HIGH ENGINE OIL TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 175 FMI 1 | Low Engine Oil Temperature Shutdown — LOW ENGINE OIL TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 175 FMI 3 | Engine Oil Temperature Sensor Short High — ENGINE OIL TEMP SENSOR SHORT HIGH | Analog Input Circuit Fault | |
| SPN 175 FMI 4 | Engine Oil Temperature Sensor Short Low — ENGINE OIL TEMP SENSOR SHORT LOW | Analog Input Circuit Fault | |
| SPN 175 FMI 15 | High Engine Oil Temperature Warning — HIGH ENGINE OIL TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 175 FMI 17 | Low Engine Oil Temperature Warning — LOW ENGINE OIL TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 190 FMI 0 | Engine Over Speed Shutdown — ENGINE OVER SPEED SHUTDOWN | Engine Over Speed Warning | |
| SPN 190 FMI 1 | Engine Under Speed Shutdown — ENGINE UNDER SPEED SHUTDOWN | Engine Under Speed Warning | |
| SPN 190 FMI 2 | Engine Speed Sensor Erratic or Not Present — ENGINE SPEED SENSOR ERRATIC/LOST | Engine Speed Circuit Fault | |
| SPN 190 FMI 5 | Engine Speed Sensor Open — ENGINE SPEED SENSOR OPEN | Engine Speed Circuit Fault | |
| SPN 190 FMI 17 | Engine Under Speed Warning — ENGINE UNDER SPEED WARNING | Engine Under Speed Warning | |
| SPN 625 FMI 11 | SCADA Data Link Fault — SCADA DATA LINK FAULT | Data Link Circuit Fault | |
| SPN 639 FMI 11 | Primary Data Link Fault — PRIMARY DATA LINK FAULT | Data Link Circuit Fault | |
| SPN 701 FMI 0 | Custom Event #1 High Shutdown — CUSTOM EVENT #1 HIGH SHUTDOWN | Digital Input Circuit Fault | |
| SPN 701 FMI 1 | Custom Event #1 Low Shutdown — CUSTOM EVENT #1 LOW SHUTDOWN | Digital Input Circuit Fault | |
| SPN 701 FMI 15 | Custom Event #1 High Warning — CUSTOM EVENT #1 HIGH WARNING | Digital Input Circuit Fault | |
| SPN 701 FMI 17 | Custom Event #1 Low Warning — CUSTOM EVENT #1 LOW WARNING | Digital Input Circuit Fault | |
| SPN 701 FMI 31 | Custom Event #1 Status — CUSTOM EVENT #1 STATUS ACTIVE | Digital Input Circuit Fault | |
| SPN 702 FMI 0 | Custom Event #2 High Shutdown — CUSTOM EVENT #2 HIGH SHUTDOWN | Digital Input Circuit Fault | |
| SPN 702 FMI 1 | Custom Event #2 Low Shutdown — CUSTOM EVENT #2 LOW SHUTDOWN | Digital Input Circuit Fault | |
| SPN 702 FMI 15 | Custom Event #2 High Warning — CUSTOM EVENT #2 HIGH WARNING | Digital Input Circuit Fault | |
| SPN 702 FMI 17 | Custom Event #2 Low Warning — CUSTOM EVENT #2 LOW WARNING | Digital Input Circuit Fault | |
| SPN 702 FMI 31 | Custom Event #2 Status — CUSTOM EVENT #2 STATUS ACTIVE | Digital Input Circuit Fault | |
| SPN 703 FMI 0 | Custom Event #3 High Shutdown — CUSTOM EVENT #3 HIGH SHUTDOWN | Digital Input Circuit Fault | |
| SPN 703 FMI 1 | Custom Event #3 Low Shutdown — CUSTOM EVENT #3 LOW SHUTDOWN | Digital Input Circuit Fault | |
| SPN 703 FMI 15 | Custom Event #3 High Warning — CUSTOM EVENT #3 HIGH WARNING | Digital Input Circuit Fault | |
| SPN 703 FMI 17 | Custom Event #3 Low Warning — CUSTOM EVENT #3 LOW WARNING | Digital Input Circuit Fault | |
| SPN 703 FMI 31 | Custom Event #3 Status — CUSTOM EVENT #3 STATUS ACTIVE | Digital Input Circuit Fault | |
| SPN 704 FMI 0 | Custom Event #4 High Shutdown — CUSTOM EVENT #4 HIGH SHUTDOWN | Digital Input Circuit Fault | |
| SPN 704 FMI 1 | Custom Event #4 Low Shutdown — CUSTOM EVENT #4 LOW SHUTDOWN | Digital Input Circuit Fault | |
| SPN 704 FMI 15 | Custom Event #4 High Warning — CUSTOM EVENT #4 HIGH WARNING | Digital Input Circuit Fault | |
| SPN 704 FMI 17 | Custom Event #4 Low Warning — CUSTOM EVENT #4 LOW WARNING | Digital Input Circuit Fault | |
| SPN 704 FMI 31 | Custom Event #4 Status — CUSTOM EVENT #4 STATUS ACTIVE | Digital Input Circuit Fault | |
| SPN 705 FMI 0 | Custom Event #5 High Shutdown — CUSTOM EVENT #5 HIGH SHUTDOWN | Digital Input Circuit Fault | |
| SPN 705 FMI 1 | Custom Event #5 Low Shutdown — CUSTOM EVENT #5 LOW SHUTDOWN | Digital Input Circuit Fault | |
| SPN 705 FMI 15 | Custom Event #5 High Warning — CUSTOM EVENT #5 HIGH WARNING | Digital Input Circuit Fault | |
| SPN 705 FMI 17 | Custom Event #5 Low Warning — CUSTOM EVENT #5 LOW WARNING | Digital Input Circuit Fault | |
| SPN 705 FMI 31 | Custom Event #5 Status — CUSTOM EVENT #5 STATUS ACTIVE | Digital Input Circuit Fault | |
| SPN 706 FMI 0 | Custom Event #6 High Shutdown — CUSTOM EVENT #6 HIGH SHUTDOWN | Digital Input Circuit Fault | |
| SPN 706 FMI 1 | Custom Event #6 Low Shutdown — CUSTOM EVENT #6 LOW SHUTDOWN | Digital Input Circuit Fault | |
| SPN 706 FMI 15 | Custom Event #6 High Warning — CUSTOM EVENT #6 HIGH WARNING | Digital Input Circuit Fault | |
| SPN 706 FMI 17 | Custom Event #6 Low Warning — CUSTOM EVENT #6 LOW WARNING | Digital Input Circuit Fault | |
| SPN 706 FMI 31 | Custom Event #6 Status — CUSTOM EVENT #6 STATUS ACTIVE | Digital Input Circuit Fault | |
| SPN 924 FMI 3 | Digital Output #1 Short High — DIGITAL OUTPUT 1 SHORT HIGH | Output Circuit | |
| SPN 925 FMI 3 | Digital Output #2 Short High — DIGITAL OUTPUT 2 SHORT HIGH | Digital Output Circuit Fault | |
| SPN 970 FMI 31 | Emergency Stop Shutdown — EMERGENCY STOP SHUTDOWN | Digital Input Circuit Fault | |
| SPN 1122 FMI 0 | High Generator Bearing #1 Temperature Shutdown — HIGH GEN BEARING #1 TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 1122 FMI 1 | Low Generator Rear Bearing Temperature Shutdown — LOW GEN REAR BEARING TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 1122 FMI 3 | Generator Rear Bearing Temperature Sensor Short High — GEN REAR BEARING TEMP SENSOR SHORT HIGH | Analog Input Circuit Fault | |
| SPN 1122 FMI 4 | Generator Rear Bearing Temperature Sensor Short Low — GEN REAR BEARING TEMP SENSOR SHORT LOW | Analog Input Circuit Fault | |
| SPN 1122 FMI 15 | High Rear Generator Bearing Temperature Warning — HIGH GEN REAR BEARING TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 1122 FMI 17 | Low Generator Rear Bearing Temperature Warning — LOW GEN REAR BEARING TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 1231 FMI 11 | Accessory Data Link Fault — ACCESSORY DATA LINK FAULT | Data Link Circuit Fault | |
| SPN 1239 FMI 31 | Fuel Tank Leak (Fuel Rupture Basin) — FUEL TANK LEAK | Digital Input Circuit Fault | |
| SPN 1664 FMI 31 | Engine Failure to Start Shutdown — ENGINE FAILURE TO START SHUTDOWN | Engine Overcrank Warning | |
| SPN 2433 FMI 0 | High Right Exhaust Temperature Shutdown — HIGH RIGHT EXHAUST TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 2433 FMI 1 | Low Right Exhaust Temperature Shutdown — LOW RIGHT EXHAUST TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 2433 FMI 3 | Right Exhaust Temperature Sensor Short High — RIGHT EXHAUST TEMP SENSOR SHORT HIGH | Analog Input Circuit Fault | |
| SPN 2433 FMI 4 | Right Exhaust Temperature Sensor Short Low — RIGHT EXHAUST TEMP SENSOR SHORT LOW | Analog Input Circuit Fault | |
| SPN 2433 FMI 15 | High Right Exhaust Temperature Warning — HIGH RIGHT EXHAUST TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 2433 FMI 17 | Low Right Exhaust Temperature Warning — LOW RIGHT EXHAUST TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 2434 FMI 0 | High Left Exhaust Temperature Shutdown — HIGH LEFT EXHAUST TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 2434 FMI 1 | Low Left Exhaust Temperature Shutdown — LOW LEFT EXHAUST TEMP SHUTDOWN | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 2434 FMI 3 | Left Exhaust Temperature Sensor Short High — LEFT EXHAUST TEMP SENSOR SHORT HIGH | Analog Input Circuit Fault | |
| SPN 2434 FMI 4 | Left Exhaust Temperature Sensor Short Low — LEFT EXHAUST TEMP SENSOR SHORT LOW | Analog Input Circuit Fault | |
| SPN 2434 FMI 15 | High Left Exhaust Temperature Warning — HIGH LEFT EXHAUST TEMP WARNING | Analog Input Circuit Fault | |
| SPN 2434 FMI 17 | Low Left Exhaust Temperature Warning — LOW LEFT EXHAUST TEMP WARNING | Digital Input Circuit Fault and Analog Input Circuit Fault | |
| SPN 2436 FMI 0 | Generator Over Frequency Shutdown — GEN OVER FREQUENCY SHUTDOWN | Generator Over Frequency Warning | |
| SPN 2436 FMI 1 | Generator Under Frequency Shutdown — GEN UNDER FREQUENCY SHUTDOWN | Generator Under Frequency Warning | |
| SPN 2436 FMI 2 | Engine Speed-Generator Output Frequency Mismatch Warning — ENG SPEED-GEN FREQ MISMATCH WARN | Engine Speed Warning | |
| SPN 2436 FMI 12 | Generator Output Sensing System Failure — GEN AC METERING SYS FAILURE | Generator Output Sensing Circuit Fault | |
| SPN 2436 FMI 15 | Generator Over Frequency Warning — GEN OVER FREQUENCY WARNING | Generator Over Frequency Warning | |
| SPN 2436 FMI 17 | Generator Under Frequency Warning — GEN UNDER FREQUENCY WARNING | Generator Under Frequency Warning | |
| SPN 2440 FMI 0 | Generator Over Voltage Shutdown — GEN OVER VOLTAGE SHUTDOWN | Generator Over Voltage Warning | |
| SPN 2440 FMI 1 | Generator Under Voltage Shutdown — GEN UNDER VOLTAGE SHUTDOWN | Generator Under Voltage Warning | |
| SPN 2440 FMI 15 | Generator Over Voltage Warning — GEN OVER VOLTAGE WARNING | Generator Over Voltage Warning | |
| SPN 2440 FMI 17 | Generator Under Voltage Warning — GEN UNDER VOLTAGE WARNING | Generator Under Voltage Warning | |
| SPN 2448 FMI 0 | Generator Over Current Shutdown — GEN OVER CURRENT SHUTDOWN | Generator Over Current Warning | |
| SPN 2448 FMI 15 | Generator Over Current Warning — GEN OVER CURRENT WARNING | Generator Over Current Warning | |
| SPN 2452 FMI 1 | Generator Reverse Power Shutdown — GEN REVERSE POWER SHUTDOWN | Generator Reverse Power Warning | |
| SPN 2452 FMI 17 | Generator Reverse Power Warning — GEN REVERSE POWER WARNING | Generator Reverse Power Warning | |
| SPN 2648 FMI 31 | Service Maintenance Interval Warning — SERV MAINT INTERVAL WARNING | Service Information Interval Warning | |
| SPN 4000 FMI 31 | Air Damper Closed — AIR DAMPER CLOSED | Digital Input Circuit Fault | |
| SPN 4001 FMI 34 | ATS in Normal Position — ATS IN NORMAL POSITION | Digital Input Circuit Fault | |
| SPN 4002 FMI 31 | ATS in Emergency Position — ATS IN EMERGENCY POSITION | Digital Input Circuit Fault | |
| SPN 4003 FMI 31 | Battery Charger Failure — BATTERY CHARGER FAILURE | Digital Input Circuit Fault | |
| SPN 4004 FMI 31 | Generator Circuit Breaker Closed — GENERATOR BREAKER CLOSED | Digital Input Circuit Fault | |
| SPN 4005 FMI 31 | Utility Circuit Breaker Closed — UTILITY BREAKER CLOSED | Digital Input Circuit Fault | |
| SPN 4006 FMI 31 | Engine in Cooldown — ENGINE IN COOLDOWN | Engine Cooldown Warning | |
| SPN 4007 FMI 31 | Generator Control Not in Automatic Warning — GEN CONTROL NOT IN AUTO WARNING | Generator Control Not In Automatic Warning | |
| SPN 4008 FMI 31 | Unexpected Engine Shutdown — UNEXPECTED ENGINE SHUTDOWN |
Compiled from Caterpillar service manuals and controller documentation. 66 code numbers mean different things on different controllers; each meaning is listed with the models it applies to. Cause/remedy shown where extracted; always verify against the manual for your exact model.
The CID-FMI does not change from 03 to 04 when a jumper wire is installed between pin B and pin C at the suspect sensor connector.. Remedy: Temporarily connect a new sensor. Verify that the new sensor solves the problem before you permanently install the new sensor. Calibrate the sensor..
There is a short circuit diagnostic code for the suspect sensor.. Remedy: Use a suitable piece of wire to short terminal B (Analog Return) and terminal C (Signal) at the harness side of the suspect sensor connector. Check for active diagnostic codes on Cat ET..
The CID-FMI does not change from 04 to 03 when the suspect sensor is disconnected.. Remedy: Replace the suspect sensor. Verify that the repair eliminates the problem..
High Fuel Level Shutdown. Cause: Digital Input Circuit Fault.
Low Fuel Level Shutdown. Cause: Digital Input Circuit Fault.
High Engine Oil Level Shutdown. Cause: Digital Input Circuit Fault.
Low Engine Oil Level Shutdown. Cause: Digital Input Circuit Fault.