Cummins/Onan DSHAC troubleshooting: 225 fault codes and 9 symptom-cause-remedy entries from the manufacturer's own service documentation.
Cummins/Onan DSHAC — full specs, parts & maintenance.
All Cummins/Onan fault codes →
| Code | Meaning | Cause | Remedy |
|---|---|---|---|
| 111 | Internal ECM error | ||
| 115 | Speed signal lost | ||
| 122 | Manifold air press sensor high | ||
| 123 | Manifold air press sensor low | ||
| 124 | High manifold pressure | ||
| 135 | Oil pressure sensor high | ||
| 141 | Oil pressure sensor low | ||
| 143 | Low oil pressure | ||
| 144 | Coolant temp sensor high | ||
| 145 | Coolant temp sensor low | ||
| 146 | High coolant temp warning | ||
| 151 | High coolant temp alarm | ||
| 152 | Low coolant temp | ||
| 153 | Manifold air temp sensor high | ||
| 154 | Manifold air temp sensor low | ||
| 155 | Manifold air temp alarm | ||
| 187 | Sensor supply 2 low | ||
| 221 | Air pressure sensor high | ||
| 222 | Air pressure sensor low | ||
| 223 | CORS value driver shorted low | ||
| 224 | CORS value driver shorted high | ||
| 227 | Sensor supply 2 high | ||
| 234 | Overspeed | ||
| 238 | Sensor supply 3 low | ||
| 271 | High fuel pressure sol 1 low | ||
| 272 | High fuel pressure sol 1 high | ||
| 281 | Fuel pump stuck (mech) | ||
| 285 | J1939 time out error | ||
| 286 | J1939 config error | ||
| 287 | J1939 time out error | ||
| 288 | J1939 time out error | ||
| 311 | Injector sol 1 H current | ||
| 312 | Injector sol 5 H current | ||
| 313 | Injector sol 3 H current | ||
| 314 | Injector sol 6 H current | ||
| 315 | Injector sol 2 H current | ||
| 321 | Injector sol 4 H current | ||
| 322 | Injector sol 1 L current | ||
| 323 | Injector sol 5 L current | ||
| 324 | Injector sol 3 L current | ||
| 325 | Injector sol 6 L current | ||
| 331 | Injector sol 2 L current | ||
| 332 | Injector sol 4 L current | ||
| 334 | Cool tmp sensor error | ||
| 341 | ECM data lost | ||
| 342 | ECM calibration error | ||
| 343 | Internal ECM error | ||
| 351 | Bad injector pwr supply | ||
| 352 | Sensor supply 1 low | ||
| 386 | Sensor supply 1 high | ||
| 415 | Low oil pressure alarm | ||
| 418 | High H2O in fuel | ||
| 422 | Coolant level sen data error | ||
| 425 | Coolant level sen data error | ||
| 427 | CAN data link lost messages | ||
| 428 | H2O in fuel sensor high | ||
| 429 | H2O in fuel sensor low | ||
| 434 | ECM power lost | ||
| 435 | Oil pressure data error | ||
| 441 | Low battery voltage | ||
| 442 | High fuel supply pressure | ||
| 449 | High fuel supply pressure | ||
| 451 | Injector metering rail 1 high | ||
| 452 | Injector metering rail 1 low | ||
| 482 | High fuel supply pressure | ||
| 488 | High intake manifold temp | ||
| 553 | High fuel pump pressure | ||
| 554 | Fuel pressure sensor error | ||
| 559 | Low fuel pump pressure | ||
| 595 | High turbo #1 speed | ||
| 599 | OEM commanded shtdn | ||
| 687 | Low turbo 1 speed | ||
| 689 | Crankshaft sensor error | ||
| 697 | ECM internal temp sen high | ||
| 698 | ECM internal temp sen low | ||
| 731 | Cam/Crank misalignment | ||
| 778 | Camshaft sensor | ||
| 951 | Cylinder power imbalance | ||
| 1117 | ECM power lost | ||
| 1124 | Delayed shutdown | ||
| 1244 | CAN − Engine normal shutdown | ||
| 1245 | CAN − Engine shutdown | ||
| 1246 | CAN − Unknown engine fault | ||
| 1247 | CAN − Engine unannounced fault | ||
| 1248 | CAN - Engine warning condition | ||
| 2217 | ECM data lost | ||
| 2249 | Diesel low 2 pressure error | ||
| 2265 | Fuel priming pump circuit high | ||
| 2266 | Fuel priming pump circuit low | ||
| 2292 | Diesel flow high error | ||
| 2293 | Diesel flow low error | ||
| 2311 | EFC resistance error | ||
| 2345 | Turbo speed error | ||
| 2377 | Fan clutch low control error | ||
| 2425 | GHC high volt error 2 | ||
| 2426 | GHC low volt error 2 | ||
| 2555 | Intake air heater #1 circuit high | ||
| 2556 | Intake air heater #1 circuit low | ||
| 2973 | Intake manifold pressure sen error | ||
| 197 | LOW COOLANT LEVEL — Lamp: Warning (Optional). Indicates engine coolant level has fallen below the warning trip point. Allow engine to cool down completely before proceeding. | Check coolant level and replenish if low. Look for possible coolant leakage points and repair if necessary; Reset control and restart after locating and correcting problem. | |
| 235 | LOW COOLANT LEVEL — Lamp: Shutdown. Indicates engine coolant level has fallen below the shutdown trip point. | See code 197 for corrective action. | |
| 427 | CAN DATALINK LOST MESSAGES — Lamp: Warning. Datalink fault. Indicates that important data was lost between the Base board and the CM850 engine control module. | Refer to detailed troubleshooting procedure in this section. | |
| 434 | ECM POWER LOST — Lamp: Warning. Indicates that “Keyswitch” to the ECM was NOT removed for 30 seconds before removing battery power to the ECM (removing connectors or battery cable). | To reset, place the O/Manual/Auto switch in the O position and press E-Stop and wait 30 seconds. Remove E-Stop and press the Fault Reset button. | |
| 441 | LOW BAT VOLTAGE — Lamp: Warning. Indicates battery voltage supply to the control is approaching a low level at which unpredictable operation will occur. | Refer to detailed troubleshooting procedure in this section. | |
| 442 | HIGH BAT VOLTAGE — Lamp: Warning. Indicates battery voltage supply to the control is approaching a high level at which damage to the control can occur. | Check float level on battery charger if applicable (lower float level). Check battery wiring/calibration. | |
| 781 | CAN DATALINK FAILED — Lamp: Shutdown. Datalink failure. No communications between the Base board and the CM850 engine control module. | Refer to detailed troubleshooting procedure in this section. | |
| 1117 | ECM POWER LOST — Lamp: Warning. Indicates that “Keyswitch” to the ECM was NOT removed for 30 seconds before removing battery power to the ECM (removing connectors or battery cable). | To reset, place the O/Manual/Auto switch in the O position and press E-Stop and wait 30 seconds. Remove E-Stop and press the Fault Reset button. | |
| 1124 | DELAYED SHUTDOWN — Lamp: Warning. A shutdown fault became active while the Delayed Shutdown feature was enabled. The shutdown will be delayed by the delayed shutdown time entered. | Review Fault History and perform corrective action. | |
| 1245 | CAN−ENGINE SHUTDOWN — Lamp: Shutdown. The CM850 engine control module indicated to the PCC that it is shutting down the engine but did not send any other fault condition over the datalink. | Refer to detailed troubleshooting procedure in this section. | |
| 1313 - 1316 | NETWORK FAULT 1 thru 4 — Lamp: Warning/Shutdown or none for status message. Indicates network input (#1−#4) is in an active state. | Each of the fault functions can be programmed (using service tool), as follows: Status, Warning or Shutdown; Change display name using up to 19 characters. | |
| 1334 | CRIT SCALER OR — Lamp: Shutdown. Incorrect feature or calibration was entered into control. | ||
| 1335 | NONCRIT SCALER OR — Lamp: Warning. Incorrect feature or calibration was entered into control. | ||
| 1417 | POWER DOWN ERROR — Lamp: Warning. Indicates that the controller can not power down because of some unknown condition. Possible drain on battery. | Replace Base board. | |
| 1433 | EMERGENCY STOP — Lamp: Shutdown. Indicates local Emergency Stop. | To reset the local/remote Emergency Stop button: Pull the Emergency Stop button out; Move the O/Manual/Auto switch to O; Press the front panel Fault Acknowledge/Reset button; Return O/Manual/Auto switch to desired position. | |
| 1434 | REMOTE E-STOP — Lamp: Shutdown. Indicates remote Emergency Stop. | See code 1433 to reset. | |
| 1438 | FAIL TO CRANK — Lamp: Shutdown. Indicates possible fault with control, speed sensing or starting system. | Refer to detailed troubleshooting procedure in this section. | |
| 1442 | WEAK BATTERY — Lamp: Warning. Indicates that during cranking, the battery voltage is at or below the weak battery warning trip point for a time greater than or equal to the weak battery set time. | See code 441 for corrective action. | |
| 1443 | BATTERY FAILED — Lamp: Shutdown. Dead battery − engine will not start. | See code 441 for corrective action. | |
| 1444 | KW OVERLOAD — Lamp: Warning. Indicates that generator output power exceeded 105% of genset rating. | Check load and load lead connections. | |
| 1445 | SHORT CIRCUIT — Lamp: Shutdown. Indicates that generator output current has exceeded 175% of rated. | Check load and load lead connections. (Fault may not reset for several minutes.) | |
| 1446 | HIGH AC VOLTAGE — Lamp: Shutdown. Indicates that one or more of the phase voltages has exceeded 130% of nominal, or has exceeded 110% of nominal for 10 seconds. | Refer to detailed troubleshooting procedure in this section. | |
| 1447 | LOW AC VOLTAGE — Lamp: Shutdown. Indicates that one or more of the phase voltages has dropped below 85% of nominal for 10 seconds. | Refer to detailed troubleshooting procedure in this section. | |
| 1448 | UNDER FREQUENCY — Lamp: Shutdown. Indicates that engine speed has dropped below 90% of nominal for 10 seconds. | Check fuel supply, intake air supply and load. | |
| 1449 | OVER FREQUENCY — Lamp: Warning. Indicates frequency is 10% above base frequency for 20 seconds. | Refer to detailed troubleshooting procedure in this section. | |
| 1459 | REVERSE POWER — Lamp: Shutdown. Indicates improper CT phasing. | Check wiring to voltage sense circuit. Refer to CT Installation in Section 5. | |
| 1461 | LOSS OF FIELD — Lamp: Shutdown. Indicates loss of field (electric) due to reverse kVAR. | ||
| 1466 | MODEM FAILURE — Lamp: Warning. Indicates that control can not communicate with the modem. | Check for open, short circuit to ground, and loose connections to the modem. | |
| 1468 | NETWORK ERROR — Lamp: Warning. Indicates momentary loss of communication from the LonWorks Network. | Refer to the LonWorks Network publications for more specific troubleshooting methods. | |
| 1469 | SPEED/HZ MATCH — Lamp: Shutdown. Indicates that measured speed and measured AC output frequency do not agree. | Check calibration file. | |
| 1471 | OVER CURRENT — Lamp: Warning. Indicates that generator output current has exceeded 110% of rated for 60 seconds. | Check load and load lead connections. | |
| 1472 | OVER CURRENT — Lamp: Shutdown. Indicates that generator output current has exceeded 110% of rated, and that a control time/current calculation has initiated an overcurrent shutdown. | Check load and load lead connections. (Fault may not reset for several minutes.) | |
| 2323 - 2326 | NETWORK FAULT 5 thru 8 — Lamp: Warning/Shutdown or none for status message. Indicates network input (#5−#8) is in an active state. | See 1313−1316 fault code corrective action. | |
| 2335 | EXCITATION FAULT — Lamp: Shutdown. Indicates a loss of all three voltage sense leads or failure in excitation circuit. | Check field wiring (X1 and X2) for shorts or opens. | |
| 2336 | MEMORY ERROR — Lamp: Shutdown. Indicates control memory error. Data corruption of critical operating parameters. | Try reloading calibration file. | |
| 2341 | HIGH CONTROL TEMP — Lamp: Warning. Control temperature is above normal (158 F [70 C]) for a time greater than control temperature set time. | Check genset room air flow. | |
| 2342 | TOO LONG IN IDLE — Lamp: Warning. Indicates genset has been in Idle mode too long. | Exit idle mode. | |
| 2967 | GOVERNOR FAULT — Lamp: Warning. Governor hardware drive circuitry contains a fault condition. | ||
| 2968 | AVR FAULT — Lamp: Warning. Indicates AVR hardware contains a fault condition. | ||
| 2969 | LON FAILURE — Lamp: Warning. Indicates no communications with LonWorks board. | ||
| 2972 | FIELD OVERLOAD — Lamp: Shutdown. AVR Field has been at Max Field for a time greater than the allowed Max Field Time. | ||
| 197/235 | LOW COOLANT LEVEL (WARNING/SHUTDOWN) — No action is taken by the PCC for code 197. Engine will shut down for code 235. | Engine coolant level has dropped below the warning/shutdown threshold for low/high coolant level. The sensor, harness or Base board could be bad. | If the coolant level is normal, isolate the source of the low coolant signal. (This is a ground signal.) Disconnect the signal lead at the sender and reset the control. If the 197/235 message drops out and does not reappear, replace the sender. If the 197/235 message reappears and remains after control reset, remove connector P7 from Base board and check continuity from P7-32 to ground. If there is continuity, replace the harness. If there is not continuity, replace the Base board. |
| 427 | CAN DATALINK LOST MESSAGES (WARNING) — Engine will not start (If fault occurred during genset operation, genset may continue to operate). | Power removed from ECM (keyswitch) during genset operation. O pressed on control during genset operation. (This is a nuisance fault only, not a critical fault.) | Reset control by pressing Fault Reset button with O/Manual/Auto switch in O (Off) position. |
| 427 | CAN DATALINK LOST MESSAGES (WARNING) — Engine will not start (If fault occurred during genset operation, genset may continue to operate). | Defective Datalink harness assembly. | Inspect the Datalink harness P10 and C1 connector pins. Repair or replace as necessary; Check for resistive circuit in lead P10-1 to C1-46 and P10-2 to C1-37 (10 ohms or less OK); Check terminating resistors. With connectors P10 and C1 removed, measure resistance between pins P10-1 and P10-2 (60 ohms OK). |
| 427 | CAN DATALINK LOST MESSAGES (WARNING) — Engine will not start (If fault occurred during genset operation, genset may continue to operate). | No B+ at Keyswitch input to CM850 module. (With battery connected, B+ should always be supplied to Keyswitch input of CM850 module, other than when PCC Sleep Mode is active.) Fuse F12 located on engine harness may be open. | Remove F12 and check continuity. If open, replace the fuse with one of the same type and amp rating (5 Amps). |
| 427 | CAN DATALINK LOST MESSAGES (WARNING) — Engine will not start (If fault occurred during genset operation, genset may continue to operate). | The Base board or CM850 module is bad. | Verify connection to Base board using InPower. If connection does not exist, replace Base board; Verify connection to CM850 module using InSite. Check for faults (refer to engine service manual). The Base board/module is bad if it fails to acknowledge message. |
| 441 | Low battery voltage (Warning) — PCC voltage supply approaching level at which unpredictable operation may occur. | Weak or discharged battery. | Recharge or replace the battery. Specific gravity for a fully charged battery is approximately 1.260 at 80 F (27 C). |
| 441 | Low battery voltage (Warning) — PCC voltage supply approaching level at which unpredictable operation may occur. | Low electrolyte level in battery. | Replenish electrolyte and recharge battery. |
| 441 | Low battery voltage (Warning) — PCC voltage supply approaching level at which unpredictable operation may occur. | Battery connections loose or dirty. | Clean and tighten or replace the battery cable connectors and cables at the battery and the set. |
| 441 | Low battery voltage (Warning) — PCC voltage supply approaching level at which unpredictable operation may occur. | Incorrect battery voltage setup. | Verify that battery voltage matches the voltage that the PCC is calibrated for. |
| 441 | Low battery voltage (Warning) — PCC voltage supply approaching level at which unpredictable operation may occur. | Insufficient battery charging voltage. | Adjust charge rate of AC powered battery charging circuit, according to manufactures instructions. |
| 441 | Low battery voltage (Warning) — PCC voltage supply approaching level at which unpredictable operation may occur. | Engine DC alternator could be bad. | Replace engine DC alternator if normal battery charging voltage (12 to 14 or 24 to 26 VDC) is not obtained. |
| 441 | Low battery voltage (Warning) — PCC voltage supply approaching level at which unpredictable operation may occur. | If the batteries are OK, the problem may be the harness or the Base board. | Remove connector P7 from Base board and check battery voltage at P7-1 through P7-4 (B+) to P7-5 through P7-8 (GND). If the voltage at P7 is not the same as the battery voltage, the harness is bad. If the voltage at P7 is OK, the Base board is bad. |
| 442 | High battery voltage (Warning) — PCC damage will occur. | Excessive battery charging voltage. | Adjust charge rate of AC powered battery charging circuit according to manufacturers instructions. |
| 442 | High battery voltage (Warning) — PCC damage will occur. | Engine DC alternator could be bad. | Replace engine DC alternator if normal battery charging voltage (12 to 14 or 24 to 26 VDC) is not obtained. |
| 442 | High battery voltage (Warning) — PCC damage will occur. | Wrong battery voltage. | Verify that battery voltage 12 or 24 matches calibration. |
| 781 | CAN datalink failed (Shutdown) — Engine will not start. | Defective Datalink harness assembly. | Inspect the Datalink harness P10 and C1 connector pins. Repair or replace as necessary; Check for open circuit between leads P10-1 & C1-46 and P10-2 & C1-37 (10 ohms or less OK); Check terminating resistors. With connectors P10 and C1 removed, measure resistance between pins P10-1 and P10-2 (60 ohms OK). |
| 781 | CAN datalink failed (Shutdown) — Engine will not start. | The Base board or CM850 module is bad. | Verify failed message to: Base board using InPower; CM850 module using InSite (refer to engine service manual). The board/module is bad if it fails to receive message. |
| 1245 | CAN engine shutdown (Shutdown) — Engine will not start. | No B+ at Keyswitch input to CM850 module. | Refer to code 427 instructions. |
| 1245 | CAN engine shutdown (Shutdown) — Engine will not start. | Fuse F1 or F2 located on engine harness may be open. | Remove F1 (1 Amp) and F2 (30 Amps) and check continuity. If open, replace the fuse with one of the same type and amp rating. |
| 1245 | CAN engine shutdown (Shutdown) — Engine will not start. | CM850 module/engine fault. | Refer to engine service manual. |
| 1438 | Fail to crank (Shutdown) — Engine will not start. | Starter is bad. | Reset the control. Attempt to start, and test for B+ at the starter. If there is B+ at the starter, the starter could be bad. Test starter (see engine service manual). Replace the starter. If B+ is not present at the starter, go to next step. |
| 1438 | Fail to crank (Shutdown) — Engine will not start. | Base board is bad or fuse F3 on the Base board may be open. | Remove F3 and check continuity. If open, replace the fuse with one of the same type and amp rating (2 Amps). If F3 is OK, install harness tool between Base board P7 connector. Attempt to start and check for B+ at P7-23 (GEN SW B+) and P7-27 (START SOL-). (These are leads to the K4 coil.) If there is no B+ signal, the Base board is bad. If there is a B+ signal, the Start Pilot Relay K4 or starter circuitry is bad. Go to next step. |
| 1438 | Fail to crank (Shutdown) — Engine will not start. | Start Pilot Relay K4 or starter circuitry could be bad. | Check for B+ at K4-1 (directly connected to battery B+). If not present, check for open circuit. If there is B+, attempt to start and test for B+ at K4-4. If there is no B+ at K4-4, K4 is bad. If there is B+ at K4-4, check for open circuit between K4-4 and K3-S1. B+ at K3-S1, go to next step. |
| 1438 | Fail to crank (Shutdown) — Engine will not start. | Starter Relay K3 or starter circuitry could be bad. | Check for B+ at K3 lead BATT (directly connected to battery B+). If not present, check for open circuit. If there is B+, attempt to start and test for B+ at K3 lead SW. If there is no B+ at K3 lead SW, K3 is bad. If there is B+ at K3 lead SW, check for open circuit between K3 lead SW and starter. |
| 1438 | Fail to crank (Shutdown) — Engine will not start. | The Emergency Stop switch or wiring is defective. | With Emergency Stop push button not activated, remove connector P1 and check for continuity between P1-1 (ESTOP-NC1) and P1-2 (ESTOP-NC2). (If circuit is open, the control will detect a local E-Stop condition but will not display the E-Stop condition.) If circuit is open, isolate to Emergency Stop switch and wiring. |
| 1438 | Fail to crank (Shutdown) — Engine will not start. | CAN Datalink error. | CAN Datalink error was detected prior to genset receiving start command. Review fault codes. Refer to code 427 instructions. |
| 1442 | Weak battery (Warning) — No action is taken by the PCC. | Weak or discharged battery. | Recharge or replace the battery. Specific gravity for a fully charged battery is approximately 1.260 at 80 F (27 C). |
| 1442 | Weak battery (Warning) — No action is taken by the PCC. | Low electrolyte level in battery. | Replenish electrolyte and recharge battery. |
| 1442 | Weak battery (Warning) — No action is taken by the PCC. | Battery connections loose or dirty. | Clean and tighten or replace the battery cable connectors and cables at the battery and the set. |
| 1442 | Weak battery (Warning) — No action is taken by the PCC. | Insufficient battery charging voltage. | Adjust charge rate of AC powered battery charging circuit, according to manufacturers instructions. |
| 1442 | Weak battery (Warning) — No action is taken by the PCC. | If the batteries are OK, the problem may be the harness or the Base board. | Remove connector P7 from Base board and check battery voltage at P7-1 through P7-4 (B+) to P7-5 through P7-8 (GND). If the voltage at P7 is not the same as the battery voltage, the harness is bad. If the voltage at P7 is OK, the Base board is bad. |
| 1443 | Battery failed (Shutdown) — Engine will not start. | Refer to code 1438. | Refer to code 1438 instructions. |
| 1444 | KW overload (Warning) — No action taken by the PCC. | Fault threshold is not set correctly with InPower. | Reset the threshold to the highest allowable setting. Determine the required operating range before adjusting the threshold. |
| 1444 | KW overload (Warning) — No action taken by the PCC. | Short or overload. | Check the load and load cables. Repair if necessary. Check operation by disconnecting load and restarting generator set. |
| 1444 | KW overload (Warning) — No action taken by the PCC. | Incorrect CTs or CT connections. | Check CTs and CT connections. Correct if necessary. Refer to Current Transformer Installation in Section 5. |
| 1444 | KW overload (Warning) — No action taken by the PCC. | The problem may be the Base board or harness connections. | Remove connector P7 from Base board. Check continuity from P7 to CTs. P7-11 (CT1) to P7-12 (CT1-COM); P7-15 (CT2) to P7-16 (CT2-COM); P7-19 (CT3) to P7-20 (CT3-COM). Repair connections. |
| 1445 | Short circuit (Shutdown) — Engine will shut down. | Refer to code 1444. | Refer to code 1444. |
| 1446 | High AC voltage (Shutdown) — Engine will shut down. | Fault simulation was enabled with InPower. | With InPower, verify that the related fault simulation is not enabled. If you do not have InPower, remove battery power from the control to disable fault simulation overrides. |
| 1446 | High AC voltage (Shutdown) — Engine will shut down. | Single step large block load removal. | Clear fault and restart genset. |
| 1446 | High AC voltage (Shutdown) — Engine will shut down. | Fault threshold is not set correctly with InPower. | Reset the threshold to the highest allowable setting. Determine the required operating range before adjusting the threshold. |
| 1446 | High AC voltage (Shutdown) — Engine will shut down. | Base board or generator is bad. | Refer to Generator/Base Board Isolation Procedure in Section 6 to determine if the generator or the Base board is causing the high AC voltage shutdown fault. |
| 1447 | Low AC voltage (Shutdown) — Engine will shut down. | Fault simulation was enabled with InPower. | With InPower, verify that the related fault simulation is not enabled. If you do not have InPower, remove battery power from the control to disable fault simulation overrides. |
| 1447 | Low AC voltage (Shutdown) — Engine will shut down. | Fault threshold is not set correctly with InPower. | Reset the threshold to the lowest allowable setting. Determine the required operating range before adjusting the threshold. |
| 1447 | Low AC voltage (Shutdown) — Engine will shut down. | Overload. | Check the load and correct any overload. Check operation by disconnecting load and restarting generator set. |
| 1447 | Low AC voltage (Shutdown) — Engine will shut down. | Improper connections have been made at the generator output terminals. | Reconnect according to the appropriate reconnection diagram. See Section 8. |
| 1447 | Low AC voltage (Shutdown) — Engine will shut down. | PMG or field wiring could be bad. | Check and repair the PMG or field wiring (refer to Section 8). |
| 1447 | Low AC voltage (Shutdown) — Engine will shut down. | The rotating rectifier assembly (diodes CR1 through CR6) is faulty. | Check each diode (refer to Section 6). |
| 1447 | Low AC voltage (Shutdown) — Engine will shut down. | Loose connector or Base board is bad. | Repair connections (P8) or replace the Base board if necessary. |
| 1448 | Under frequency (Shutdown) — Generator set will shut down. | Fault simulation was enabled with InPower. | With InPower, verify that the related fault simulation is not enabled. If you do not have InPower, remove battery power from the control to disable fault simulation overrides. |
| 1448 | Under frequency (Shutdown) — Generator set will shut down. | Fault threshold is not set correctly with InPower. | Reset the threshold to the lowest allowable setting. Determine the required operating range before adjusting the threshold. |
| 1448 | Under frequency (Shutdown) — Generator set will shut down. | Overload. | Check the load and correct any overload. Check operation by disconnecting load and restarting generator set. |
| 1448 | Under frequency (Shutdown) — Generator set will shut down. | Fuel or air delivery problem. | Refer to the engine service manual. |
| 1448 | Under frequency (Shutdown) — Generator set will shut down. | Loose connector or Base board is bad. | Repair connections (P8) or replace the Base board if necessary. |
| 1449 | Over frequency (Warning) — No action taken by the PCC. | Fault simulation was enabled with InPower. | With InPower, verify that the related fault simulation is not enabled. If you do not have InPower, remove battery power from the control to disable fault simulation overrides. |
| 1449 | Over frequency (Warning) — No action taken by the PCC. | Fault threshold is not set correctly with InPower. | Reset the threshold to the highest allowable setting. Determine the required operating range before adjusting the threshold. |
| 1449 | Over frequency (Warning) — No action taken by the PCC. | Fuel or air delivery problem. | Refer to the engine service manual. |
| 1449 | Over frequency (Warning) — No action taken by the PCC. | Loose connector or Base board is bad. | Repair connections (P7/P8) or replace the Base board if necessary. |
| 1471/1472 | Over current (Warning/Shutdown) — No action is taken by the PCC for code 1471. Engine will shut down for code 1472. | Refer to code 1444. | Refer to code 1444. |
| CODE 197/235 | LOW COOLANT LEVEL (WARNING/SHUTDOWN) | ||
| CODE 427 | CAN DATALINK LOST MESSAGES (WARNING) | ||
| CODE 441 | LOW BATTERY VOLTAGE (WARNING) | ||
| CODE 442 | HIGH BATTERY VOLTAGE (WARNING) | ||
| CODE 781 | CAN DATALINK FAILED (SHUTDOWN) | ||
| CODE 1245 | CAN ENGINE SHUTDOWN (SHUTDOWN) | ||
| CODE 1311, 1312, 1317, 1318 | Customer input (WARNING/shutdown) | ||
| CODE 1438 | FAIL TO CRANK (SHUTDOWN) | ||
| CODE 1442 | WEAK BATTERY (WARNING) | ||
| CODE 1443 | BATTERY FAILED (SHUTDOWN) | ||
| CODE 1444 | KW OVERLOAD (WARNING) | ||
| CODE 1445 | SHORT CIRCUIT (SHUTDOWN) | ||
| CODE 1446 | HIGH AC VOLTAGE (SHUTDOWN) | ||
| CODE 1447 | LOW AC VOLTAGE (SHUTDOWN) | ||
| CODE 1448 | UNDER FREQUENCY (SHUTDOWN) | ||
| CODE 1449 | OVER FREQUENCY (warning) | ||
| CODE 1471/1472 | OVER CURRENT (WARNING/SHUTDOWN) | ||
| 121 | Speed Signal Lost | ||
| 359 | Fail to Start | ||
| 1123 | Shutdown After Battle Short | ||
| 1131 | Battle Short Active | ||
| 1311 | Customer Inputs #1 | ||
| 1312 | Customer Inputs #2 | ||
| 1317 | Customer Inputs #3 | ||
| 1318 | Customer Inputs #4 | ||
| 1416 | Fail to Shutdown | ||
| 1435 | Low Coolant Temperature |
| Symptom | Cause | Remedy |
|---|---|---|
| Engine does not crank in manual mode (no fault message) — Engine will not start | No power supplied to control. (Control Alive indicator on Base board is not flashing.) | Poor battery cable connections. Clean the battery cable terminals and tighten all connections. |
| Engine does not crank in manual mode (no fault message) — Engine will not start | Base board not properly calibrated or corrupt calibration. (Control Alive indicator flashes every 1/2 second.) | Confirm that the installed calibration part number matches the serial plate information. Re-enter calibration file if necessary. (When properly installed, Control Alive indicator flashes every second.) |
| Engine does not crank in manual mode (no fault message) — Engine will not start | The Emergency Stop switch or wiring is defective. | With Emergency Stop push button not activated, remove connector P1 and check for continuity between P1-1 (ESTOP-NC-2) and P1-2 (ESTOP-NC-1). (If circuit is open, the control will detect a local E-Stop condition but will not display the E-Stop condition.) If circuit is open, isolate to Emergency Stop switch and wiring. If there is continuity, go to next step. |
| Engine does not crank in manual mode (no fault message) — Engine will not start | The Manual input is not getting from the Manual select switch (S12) to the Base board indicating that S12, Base board or the harness is bad. | With S12 in Manual, remove connector P1 from the Base board and check for continuity from P1-6 (MAN) to P1-8 (GND). If no continuity, isolate to switch and wiring. If there is continuity, go to next step. |
| Engine does not crank in manual mode (no fault message) — Engine will not start | The Manual Run/Stop button, harness or the Base board is bad. | Remove connector P3 from the Base board and check for continuity from P3-9 (MAN RUN/STOP) to P3-10 (GND). If no continuity when pressing the Manual Run/Stop button, replace front membrane panel. If there is continuity (200 ohms or less), the Base board is bad. |
| Engine does not crank in remote mode (no fault message) — Engine will not start in remote mode, but starts in manual mode | The remote start switch or customer wiring is faulty. | Reset the control. Attempt to start, and check for ground at TB1-1. If ground level is not present, isolate to the remote switch or customer wiring. Repair as necessary. If ground is present, go to next step. |
| Engine does not crank in remote mode (no fault message) — Engine will not start in remote mode, but starts in manual mode | The Auto mode input is not getting from the Auto select switch (S12) to the Base board indicating that S12, Base board or the harness is bad. | With S12 in Auto, remove connector P1 from the Base board and check for continuity from P1-5 (AUTO) to P1-8 (GND). If no continuity, isolate to switch or wiring harness. If there is continuity, the Base board is bad. |
| CUSTOMER INPUT #1 − #4 — Lamp: Warning/Shutdown or none for status message. The nature of the fault is an optional customer selection. Example inputs: Low Fuel Day Tank, Water In Fuel, Ground Fault, Low Starting Hydraulic Pressure, Low Starting Air Pressure, etc. | Each of the fault functions can be programmed (using service tool), as follows: Enable/disable input (Default: enable); Status, Warning or Shutdown (Default: #1−None, #2 thru #4−Warning); Active closed or open (Default: closed [ground]); Change display name using up to 19 characters (Default: #1− Customer Fault 1, #2−Ground Fault, #3−Low Fuel, #4−Rupture Basin Fault). | |
| Customer input (Warning/Shutdown) — Status, warning or shutdown. | If there is no actual fault, the problem may be an external wiring problem, active input (closed or open) selection is incorrect. | Disconnect the signal lead from TB1 and reset the control. CUST_IN1 - TB1-4; CUST_IN2 - TB1-5; CUST_IN3 - TB1-6; CUST_IN4 - TB1-7. If the message drops out, the external wiring has a short or open circuit, or the active input selection (closed/open) is not correct for customer input (use service tool to check selection). |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Documented causes: Weak or discharged battery.; Low electrolyte level in battery.; Battery connections loose or dirty.; Incorrect battery voltage setup.. See the table for the matching fixes.
Documented causes: Fault simulation was enabled with InPower.; Fault threshold is not set correctly with InPower.; Overload.; Improper connections have been made at the generator output terminals.. See the table for the matching fixes.
Documented causes: Starter is bad.; Base board is bad or fuse F3 on the Base board may be open.; Start Pilot Relay K4 or starter circuitry could be bad.; Starter Relay K3 or starter circuitry could be bad.. See the table for the matching fixes.