246 Volvo Penta generator fault/alarm codes with symptom, cause and remedy — compiled from Volvo Penta service and controller documentation.
| Code | Meaning / symptom | Cause | Remedy |
|---|---|---|---|
| 1.1 | No faults — There are no active faults. | There are no active faults. | |
| 1.9 | Exhaust Temperature (PID 173/SPN 1184) — Warning lamp lights up; Engine is shutdown | Exhaust temperature to high | Insufficient air supply; Low coolant level; Air in the coolant system; Faulty circulation pump; Blocked charge air cooler; High temperature, charge air cooler; High back pressure in the exhaust system; Check wastegate function |
| 2.0.0 | No faults | There are no active faults. | |
| 2.1 | Water in Fuel (PID/SPN 97) | Water in fuel | Empty the primary fuel filter |
| 2.1, PID/SPN 97 | Water in Fuel (Code 2.1, PID/SPN 97) | * Empty the primary fuel filter indicator for Water in Fuel (Code 2.9, PID/SPN 97) | |
| 2.2 | Coolant Level (PID/SPN 111) — Engine control module reduces engine power (unless the protection has been shut off with the VODIA diagnostic tool) | Low coolant level | Check the coolant level; Check coolant level monitor function |
| 2.3 | Coolant Level Sensor (PID/SPN 111) | Short circuit to positive (+); Fault in sensor | Check that the coolant level sensor cable is not damaged; Check coolant level sensor function |
| 2.4 | Flywheel Speed Sensor (SID 22/SPN 637) — Engine is very difficult to start and runs roughly when it starts; intermittent signal from the sensor | No signal; Abnormal frequency; Fault in sensor | Check that the sensor connector is correctly installed; Check that the engine speed sensor cable is not damaged; Check that the engine speed sensor is correctly installed in the flywheel housing; Check engine speed sensor function |
| 2.4 | Engine speed sensor, flywheel — Engine is very difficult to start and runs roughly when it starts. | No signal; Abnormal frequency; "Intermittent" signal from the sensor; Fault in sensor. | Check that the sensor connector is correctly installed; Check that the engine speed sensor cable is not damaged; Check that the engine speed sensor is correctly installed in the flywheel housing; Check engine speed sensor function; Check contact pressure in sockets 37 and 38 in the upper cable connector (A) on the engine management module. |
| 2.5 | Camshaft Drive Speed Sensor (SID 21/SPN 636) — Engine takes longer to start than normal. Engine runs normally when running | No signal; Abnormal frequency; Fault in sensor | Check that the engine speed sensor connector is correctly installed; Check that the engine speed sensor cable is not damaged; Check that the engine speed sensor is correctly installed in the upper timing gear cover; Check engine speed sensor function. |
| 2.5 | Speed sensor, camshaft gear — Engine takes longer to start than normal. Engine runs normally when is running. | No signal; Abnormal frequency; Fault in sensor. | Check that the engine speed sensor connector is correctly installed; Check that the engine speed sensor cable is not damaged; Check that the engine speed sensor is correctly installed in the upper timing gear cover; Check engine speed sensor function; Check contact pressure in sockets 45 and 46 in the upper cable connector (A) on the engine management module. |
| 2.6 | Engine Speed (PID/SPN 190) | Engine speed too high | After the engine has stopped, look for the reason for the high speed |
| 2.8 | Speed Potentiometer Connected to CIU (PPID 132/SPN 91, 608) — Engine goes to idle; Speed freezes | Shorted to plus (+) or minus (−); Fault in sensor | Check that the potentiometer has been connected correctly; Check that the cable harness to the potentiometer has not been damaged; Check the potentiometer function |
| 2.8 | Engine speed potentiometer connected to the CIU — VE engines: Engine goes to idle. GE engines: Engine speed is maintained. If the accelerator is first released and then depressed, the engine can be emergency operated by means of the idling switch. | Short circuit to positive (+) or earth (ground) (-); Faulty potentiometer | Check that the potentiometer is correctly connected; Check that the potentiometer cable is not damaged; Check potentiometer function. |
| 2.9 | Indicator for Water in Fuel (PID/SPN 97) | Short circuit; Open circuit; Fault in indicator | Check the indicator cables for breaks and short circuits; Check indicator function. Change indicator as necessary |
| 3.1 | Oil Pressure Sensor (PID/SPN 100) | Short circuit to positive (+) or earth (ground) (−); Open circuit | Check that the oil pressure sensor cable is not damaged; Check that the oil pressure sensor is correctly connected |
| 3.1, PID/SPN 100 | Oil Pressure Sensor (Code 3.1, PID/SPN 100) | * Check that the oil pressure sensor cable is not damaged * Check that the oil pressure sensor is correctly connected * Check oil pressure sensor function | |
| 3.2 | Boost Temperature Sensor (PID/SPN 105) | Short circuit to positive (+) or earth (ground) (−); Open circuit | Check that the boost temperature sensor connector is correctly installed; Check that the boost temperature sensor cable is not damaged; Check that the boost temperature sensor is correctly installed; Check boost temperature sensor function |
| 3.2 | Charge air temperature sensor | Short circuit to positive (+) or earth (ground) (-); Open circuit. | Check that the charge air temperature sensor connector is correctly installed; Check that the charge air temperature sensor cable is not damaged; Check that the charge air temperature sensor is correctly installed; Check charge air temperature sensor function; Check contact pressure in socket 47 in the upper cable connector (A) on the engine management module. |
| 3.2, PID/SPN 105 | Boost Temperature Sensor (Code 3.2, PID/SPN 105) | * Check that the boost temperature sensor connector is correctly installed * Check that the boost temperature sensor cable is not damaged * Check that the boost temperature sensor is correctly installed * Check boost temperature sensor function | |
| 3.3 | Coolant Temperature Sensor (PID/SPN 110) — Preheating is also activated when the engine is hot | Short circuit to positive (+) or earth (ground) (−); Open circuit | Check that the coolant temperature sensor connector is correctly installed; Check that the coolant temperature sensor cable is not damaged; Check that the coolant temperature sensor is correctly installed; Check coolant temperature sensor function |
| 3.4 | Boost Pressure Sensor (PID/SPN 102/106) — Engine smokes more than normally during acceleration/load increase | Short circuit to positive (+) or earth (ground) (−); Open circuit | Check that the boost pressure sensor connector is correctly installed; Check that the boost pressure sensor cable is not damaged; Check that the boost pressure sensor is correctly installed; Check boost pressure sensor function |
| 3.4 | Charge pressure sensor — Engine smokes more than normally during acceleration/load increase. | Short circuit to positive (+) or earth (ground) (-); Avbrott. | Check that the charge pressure sensor connector is correctly installed; Check that the charge pressure sensor cable is not damaged; Check that the charge pressure sensor is correctly installed; Check charge pressure sensor function; Check contact pressure in socket 22 in the upper cable connector (A) on the engine management module. |
| 3.4, PID/SPN 102/106 | Boost Pressure Sensor (Code 3.4, PID/SPN 102/106) | * Check that the boost pressure sensor connector is correctly installed * Check that the boost pressure sensor cable is not damaged * Check that the boost pressure sensor is correctly installed * Check boost pressure sensor function | |
| 3.5 | Boost Pressure Sensor (PID/SPN 106) — Engine power is reduced or engine stops. | High charge pressure | Check that the charge air pressure sensor connector is correctly installed; Check that the charge air pressure sensor cable is not damaged; Check that the charge air pressure sensor is correctly installed; Check charge air temperature sensor function |
| 3.5 | Charge air pressure — VE engines: Engine control module reduces engine power (unless the protection has been shut off with the diagnostic tool VODIA). GE engines: Engine is shut off (unless the protection has been shut off with the diagnostic tool VODIA). | Charge pressure too high | Check turbocharger compressor function; Check charge pressure sensor function; Check fuel volume/unit injector. |
| 3.5, PID/SPN 106 | Boost Pressure Sensor (Code 3.5, PID/SPN 106) | * Check that the charge air pressure sensor connector is correctly installed * Check that the charge air pressure sensor cable is not damaged * Check that the charge air pressure sensor is correctly installed * Check charge air temperature sensor function | |
| 3.6 | Fuel Pressure Sensor (PID/SPN 94) | Short circuit to positive (+) or earth (ground) (−); Open circuit. | Check that the fuel pressure sensor connector is correctly installed; Check that the fuel pressure sensor cable is not damaged; Check that the fuel pressure sensor is correctly installed; Check fuel pressure sensor function. |
| 3.6, PID/SPN 94 | Fuel Pressure Sensor (Code 3.6, PID/SPN 94) | * Check that the fuel pressure sensor connector is correctly installed. * Check that the fuel pressure sensor cable is not damaged. * Check that the fuel pressure sensor is correctly installed. * Check fuel pressure sensor-function. | |
| 3.7 | Oil Temperature Sensor (PID/SPN 175) | Shorted to plus (+) or minus (−); Break | Check that the cable harness to the oil temperature sensor has not been damaged; Check that the oil temperature sensor has been connected correctly |
| 3.8 | Fuel Pressure (PID/SPN 94) | Low supply pressure | Check if it is possible to build up pressure with the hand pump; Check the fuel filter; Check the fuel pre-filter |
| 3.8, PID/SPN 94 | Fuel Pressure (Code 3.8, PID/SPN 94) | * Low supply pressure | * Check if it is possible to build up pressure with the hand pump * Check the fuel filter * Check the fuel pre-filter |
| 3.9 | Battery Voltage, EMS (PID/SPN 158) | Faulty alternator; Faulty battery, battery cables | Check the supply voltage from the control unit |
| 4.6 | Start output/Start motor relay (PPID 3/SPN 677) — The engine cannot be started; The engine starts immediately when ignition is turned on | Shorted to plus (+) or minus (−); Activated for too long | Check that connections to the ignition key/start panel have not been damaged; Check that the cable harness to the ignition key/start panel has not been damaged |
| 4.8 | Stop Input EMS (PPID 6/SPN 970) — Engine can only be stopped with the auxiliary stop | Short circuit to negative (−); Open circuit | Check that the starter switch connections are not damaged |
| 4.9 | Exhaust Temperature (PID 173/SPN 1184) — Warning lamp lights up; Engine control unit limits engine power | Short circuit to positive (+) or negative (−); Open circuit; Exhaust temperature to high | Check that the exhaust temperature sensor connector is properly mounted; Check that the wiring to the exhaust temperature sensor is not damaged; Check that the exhaust temperature sensor is correctly mounted; Check the exhaust temperature sensor function |
| 5.2 | Starter Input CIU (PPID 4/SPN 520194) — The engine cannot be started; The engine starts immediately when ignition is turned on | Shorted to minus (−); Activated for too long | Check that connections to the ignition key/start panel have not been damaged; Check that the cable harness to the ignition key/start panel has not been damaged |
| 5.3 | Stop Input CIU (PPID 6/SPN 52095) — Engine can only be stopped with the auxiliary stop (AUX STOP) on engine; Engine stops. A fault code is displayed for 40 seconds and the engine can not be started during this time. When a fault code is active, the engine can be started but not stopped | Short circuit to negative (−); Open circuit; Activated for too long time | Check that the starter switch connections are not damaged; Check that the ignition switch cable is not damaged |
| 5.4 | Preheating Relay (PID 45/SPN 626) — Preheating can not be activated; Preheating is constantly connected. | Short circuit to positive (+) or earth (ground) (−); Open circuit. | Check that the relay input cable is not damaged; Check relay function. |
| 5.4, PID 45/SPN 626 | Preheating Relay (Code 5.4, PID 45/SPN 626) | Short circuit to positive (+) or +. Preheating can not be activated. earth (ground) (-). Open circuit. - Preheating is constantly connected. | * Check that the relay input cable is not damaged. * Check relay function. |
| 5.5 | Air Filter Pressure (PID/SPN 107) — Less good response from engine | Too large pressure drop across filter | Check the air filter |
| 5.5, PID/SPN 107 | Air Filter Pressure (Code 5.5, PID/SPN 107) | * Tao large pressure drop | |
| 5.6 | Air Filter Sensor (PID/SPN 107) | Shorted to plus (+) or minus (−); Break | Check that the air filter sensor contact is correctly installed; Check that the cable harness to air filter sensor has not been damaged; Check the air filter sensor functionality |
| 5.6, PID/SPN 107 | Air Filter Sensor (Code 5.6, PID/SPN 107) | * Check that the air filter sensor contact is correctly installed * Check that the cable harness to air filter sensor has not been damaged Check the air filter sensor functionality | |
| 5.7 | Oil Level (PID/SPN 98) | Oil level to low | Check the oil level |
| 5.7, PID/SPN 98 | Oil Level (Code 5.7, PID/SPN 98) | * Oil level to low | * Check the oil level |
| 5.8 | Oil Temperature (PID/SPN 175) — The engine control module limits engine output (unless protection has been turned off with the diagnosis tool VODIA) | Oil temperature is too high | Check the oil level; Check the oil temperature; Check the oil temperature sensor function |
| 5.9 | Oil Level Sensor (PID/SPN 98) | Shorted to plus (+) or minus (−); Break | Check that the cable harness to the oil level sensor has not been damaged; Check the oil level sensor function |
| 5.9; PID/SPN 98 | Oil Level Sensor (Code 5.9; PID/SPN 98) | * Check that the cable harness to the oil level sensor has not been damaged * Check the oil level sensor function | |
| 6.1 | Coolant Temperature (PID/SPN 110) — Engine control module reduces engine power (unless the protection has been shut off with the VODIA diagnostic tool) | Coolant temperature is too high | Check the coolant level; Check the charge air cooler (cleanliness); Check if there is air in the cooling system; Check the pressure cap on the expansion tank; Check coolant temperature sensor function; Check thermostat function |
| 6.2 | Boost Temperature (PID/SPN 105) — Engine control module reduces engine power (unless the protection has been shut off with the VODIA diagnostic tool) | Boost temperature is too high | Check the coolant level; Check the charge air cooler (cleanliness); Check boost temperature sensor function; Check the function of the thermostat |
| 6.2 | Charge air temperature — VE engines: Engine control module reduces engine power (unless the protection has been shut off with the diagnostic tool VODIA). GE engines: Engine is shut off (unless the protection has been shut off with the diagnostic tool VODIA). | Charge air temperature is too high. | Check the coolant level; Check the intercooler (cleanliness); Check charge air temperature sensor function; Check thermostat function. |
| 6.2, PID/SPN 105 | Boost Temperature (Code 6.2, PID/SPN 105) | * Boost temperature is too high | * Check the coolant level * Check the charge air cooler (cleanliness) * Check boost temperature sensor function * Check the function of the thermostat |
| 6.3 | Starter output, EMS 2 — Engine can not be started. The engine starts as soon as the ignition is switched on. | Short circuited to (+) or negative (-); Activated for too long time. | Check that the starter switch connections are not damaged; Check that the ignition switch cable is not damaged. |
| 6.4 | Data Link (CAN), CIU (SID 231/SPN 639) — Instruments and warning lamps stop working | Faulty data link (CAN), CIU | Check that the 8-pin connector is not damaged; Check that the cables between the CIU and the engine management unit are not damaged |
| 6.5 | Data Link (CAN), EMS 2 (SID 231/SPN 639/2017/PSID 201) — Engine not operating: engine can not be started. Engine operating: engine idles and can only be stopped with the auxiliary stop (AUX-stop) | Internal fault in control module | Check that the 8-pin connector is not damaged; Check that the cables between the CIU and the engine management unit are not damaged; Check that sleeves 11 and 12 in the connector on the CIU are not damaged |
| 6.6 | Oil Pressure (PID/SPN 100) — Engine control module reduces engine power (unless the protection has been shut off with the VODIA diagnostic tool) | Oil pressure is too low | Check oil level; Check that the air filter is not blocked; Check system pressure valves and safety valves in the oil system; Check oil pressure sensor function |
| 6.6, PID/SPN 100 | Oil Pressure (Code 6.6, PID/SPN 100) | * Oil pressure is too low | * Check oil level * Check that the air filter is not blocked * Check system pressure valves and safety valves in the oil system * Check oil pressure sensor function |
| 6.7 | Piston Cooling Pressure (PPID 8/SPN 520192) — Engine stopped | Piston cooling pressure is too low | Check that the oil pressure in the engine exceeds 175 kPa (25.4 psi) |
| 6.8 | Piston Cooling Pressure Sensor (PPID 8/SPN 520192) | Shorted to plus (+) or minus (−); Break | Check that the piston cooling pressure sensor contact is correctly installed; Check that the cable harness to the piston cooling pressure sensor has not been damaged; Check the piston cooling pressure sensor functionality |
| 6.9 | Battery Voltage, CIU (PID/SPN 158) — Problems in engine starting | Short circuit to negative (−); Faulty alternator; Faulty battery, battery cables | Check the supply voltage from the control unit; Check the batteries; Check the alternator; Check the 8-pin contact |
| 7.1 | Injector, Cylinder #1 (SID 1/SPN 651) — Engine runs on 5 cylinders; Abnormal sound; Reduced performance | Electrical fault; Faulty compression or injector | Check that the injector cables are not damaged; Check that the injector connections are not damaged; Check fuel supply pressure; Check the valve clearance; Do a compression test and check cylinder #1 |
| 7.1 | Unit injector: cylinder #1 — Engine runs on 5 cylinders. Abnormal sound. Reduced performance. Cylinder balancing is stopped -> Less even running at lower speeds and low loading. | Electrical fault; Faulty compression or unit injector. | Check contact pressure in socket 24 in the upper cable connector (A) on the engine management module; Check that the unit injector cables are not damaged; Check that the unit injector connections are not damaged; Check fuel supply pressure; Check the valve clearance; Do a compression test and check cylinder #1. |
| 7.2 | Injector, Cylinder #2 (SID 2/SPN 652) — Engine runs on 5 cylinders; Abnormal sound; Reduced performance | Electrical fault; Faulty compression or injector | Check that the injector cables are not damaged; Check that the injector connections are not damaged; Check fuel supply pressure; Check the valve clearance; Do a compression test and check cylinder #2 |
| 7.3 | Injector, Cylinder #3 (SID 3/SPN 653) — Engine runs on 5 cylinders; Abnormal sound; Reduced performance | Electrical fault; Faulty compression or injector | Check that the injector cables are not damaged; Check that the injector connections are not damaged; Check fuel supply pressure; Check the valve clearance; Do a compression test and check cylinder #3 |
| 7.4 | Injector, Cylinder #4 (SID 4/SPN 654) — Engine runs on 5 cylinders; Abnormal sound; Reduced performance | Electrical fault; Faulty compression or injector | Check that the injector cables are not damaged; Check that the injector connections are not damaged; Check fuel supply pressure; Check the valve clearance; Do a compression test and check cylinder #4 |
| 7.5 | Injector, Cylinder #5 (SID 5/SPN 655) — Engine runs on 5 cylinders; Abnormal sound; Reduced performance | Electrical fault; Faulty compression or injector | Check that the injector cables are not damaged; Check that the injector connections are not damaged; Check fuel supply pressure; Check the valve clearance; Do a compression test and check cylinder #5 |
| 7.6 | Injector, Cylinder #6 (SID 6/SPN 656) — Engine runs on 5 cylinders; Abnormal sound; Reduced performance | Electrical fault; Faulty compression or injector | Check that the injector cables are not damaged; Check that the injector connections are not damaged; Check fuel supply pressure; Check the valve clearance; Do a compression test and check cylinder #6 |
| 7.7 | Crankcase Ventilation Pressure (PID/SPN 153) — The engine is shut down (if the protection has not been shut off by the parameter tool) | Crankcase ventilation pressure too high | Check whether the crankcase ventilation is blocked; Check whether cylinder liners, pistons or piston rings are worn or damaged |
| 7.8 | Crankcase Ventilation Pressure Sensor (PID/SPN 153) | Shorted to plus (+) or minus (−); Break | Check that the crankcase ventilation pressure sensor contact is correctly installed; Check that the cable harness to the crankcase ventilation pressure sensor has not been damaged; Check that the crankcase ventilation pressure sensor correctly installed; Check crankcase ventilation pressure sensor function |
| 7.9 | Air Temperature Sensor, Inlet (PID/SPN 172) | Shorted to plus (+) or minus (−); Break | Check that the air temperature sensor contact is correctly installed; Check that the cable harness to the air temperature sensor has not been damaged; Check that the air temperature sensor is correctly installed; Check the air temperature sensor functionality |
| 8.4 | ECU Temperature (PPID 55/SPN 1136) | Control unit too hot, incorrect assembly; Electrical fault, damaged sensor | Check the control unit installation. Recommended ambient temperature is 50°C (122°F) |
| 8.5 | Internal EGR (PPID 19/SPN 2791) — Engine control module reduces engine power | Fault in cable harness (boost pressure sensor); Mechanical fault on the IEGR | Check cable harness (boost pressure sensor); Check the IEGR; Contact a Volvo Penta authorized workshop |
| 8.6 | Preheating Sensor (SID 70/SPN 729) | ||
| 9.2 | Faulty data link (J1587) (SID 250/SPN 608) | Faulty data link | Check that the 8-pin connector is not damaged; Check that the cables between the CIU/DCU and the engine management unit are not damaged |
| 9.2 | Faulty data link (J1708/J1587) — Warning lamp lights up. | Faulty data link. | Check that the 8-pin connector is not damaged; Check that the cables between the CIU/DCU and the engine management unit are not damaged; Check that sleeves 22 and 37 in the connector on the CIU are not damaged; Check contact pressure in sockets 33 and 34 in the upper cable connector (A) on the engine management module. |
| 9.3 | Power Supply to Sensor (SID 211/232, SPN 1079/1080) — Faulty values in oil pressure and boost pressure sensors; Fault code for oil pressure- and boost pressure sensor; Low engine output; The instrument shows zero oil pressure and boost pressure | Shortcut; Fault in sensor | Check that the cable harness to oil pressure and boost pressure sensor has not been damaged; Check oil pressure and boost pressure sensors |
| 9.8 | Data Set Memory EEPROM, CIU (SID 253/SPN 630) — Engine does not start | Internal fault in control module; Programming faulty | Re-program the control module. |
| 9.8 | Fault in Control Unit, CIU (SID 254/SPN 629) — CIU returns to factory setting; Engine goes to idle; Engine can not be started | Faulty EEPROM, CIU; Faulty flash memory, CIU; Fault in control module, CIU | Re-program the unit |
| 9.8 | Fault in control module, CIU — CIU returns to factory setting. Engine goes to idle. Engine can not be started. | Faulty EEPROM, CIU; Faulty flash memory, CIU; Fault in control module, CIU. | Change CIU unit. |
| 9.9 | Memory Fault EMS (SID 240/SPN 628) — Engine might not start | Memory fault in engine management system | Re-program the unit |
| 9.9 | Data Set Memory EEPROM, EMS (SID 253/SPN 630) — Engine does not start | Internal fault in control module | Re-program the control module. If the fault remains, change the control module |
| 9.9 | Control Module EMS (SID 254/SPN 629) — Engine misfires; Engine does not start | Internal fault in control module | Change engine control unit |
| 9.9 | Memory fault in EMS — Engine might not start. | Memory fault in engine management system. | Change engine control unit. |
| 12 | No DTC 12 indicated — diagnostic system not operating | Consult the On-Board Diagnostic (OBD) System Check | |
| 12 | Natural phenomena, such as lightning strike, flood | ||
| 13 | Oxygen Sensor Circuit 1 (inactive) | ||
| 13 | War, uprising, terrorist actions or other force majeure events | ||
| 14 | Engine Coolant Temperature (ECT) Sensor Circuit Low Temperature Indicated | ||
| 15 | Engine Coolant Temperature (ECT) Sensor Circuit High Temperature Indicated | ||
| 15 Code 2.4 | Tachometer sensor, flywheel. No signal. — The engine is extremely hard to start and runs unevenly if it does. | Tachometer sensor, flywheel. No signal. | Check that the sensor connector is fitted correctly; Check that the wiring to the tachometer sensor is not damaged; Check that the tachometer sensor is correctly fitted in the flywheel housing; Check the function of the tachometer sensor; Check the contact pressure in sleeves 30 and 31 in the black cable glove of the engine control unit (ECU). |
| 16 | Tao low lubrication cil pressure | ||
| 16 | Too low lubrication oil pressure. | ||
| 18 Code 2.4 | RPM sensor, flywheel. Abnormal frequency. — The engine is extremely hard to start and runs unevenly if it does. | RPM sensor, flywheel. Abnormal frequency. | Check that the tachometer sensor connector is fitted correctly; Check that the wiring to the tachometer sensor is not damaged; Check that the tachometer sensor is correctly fitted in the flywheel housing; Check the function of the tachometer sensor. |
| 20 | Too low coolant temperature | ||
| 20 | ECM is unable to eliminate the knocking condition using maximum spark retard. | ||
| 21 | Throttle Position (TP) Sensor Circuit High Signal Voltage Indicated | ||
| 21 Code 2.8 | RPM potentiometer connected to CIU. Short to negative (-). — The engine goes to idle. If the pedal is released and then depressed again, the engine can "limp home" using the idle contact. | RPM potentiometer connected to CIU. Short to negative (-). | Check that the potentiometer is connected correctly; Check that the wiring to the potentiometer is not damaged; Check the function of the potentiometer. |
| 22 | Throttle Position (TP) Sensor Circuit Low Signal Voltage Indicated | ||
| 22 Code 2.8 | RPM potentiometer connected to CIU. Interrupted or shorted to positive (+). — The engine goes to idle. If the pedal is released and then depressed again, the engine can "limp home" using the idle contact. | RPM potentiometer connected to CIU. Interrupted or shorted to positive (+). | Check that the potentiometer is connected correctly; Check that the wiring to the potentiometer is not damaged; Check the function of the potentiometer. |
| 23 | Intake Air Temperature (IAT) Sensor Circuit Low Temperature Indicated | ||
| 23 Code 2.7 | RPM potentiometer connected to engine control unit (ECU). Interrupted or shorted to positive (+). — The engine goes to idle. If the pedal is released and then depressed again, the engine can "limp home" using the idle contact. | RPM potentiometer connected to engine control unit (ECU). Interrupted or shorted to positive (+). | Check the control's connector is fitted correctly; Check that the wiring to the sensor is not damaged; Check the function of the sensor; Check that the 23-pin connector is fitted correctly; Check pin C and sleeve C in the 23-pin connector; Check the contact pressure in sleeve 3 in the red cable glove of the engine control unit (ECU). |
| 24 | Not Used | ||
| 24 Code 2.7 | RPM potentiometer connected to the engine control unit (ECU). Short to negative (-). — The engine goes to idle. If the pedal is released and then depressed again, the engine can "limp home" using the idle contact. | RPM potentiometer connected to the engine control unit (ECU). Short to negative (-). | Check that the potentiometer is connected correctly; Check that the wiring to the potentiometer is not damaged; Check the function of the potentiometer. |
| 25 | Intake Air Temperature (IAT) Sensor Circuit High Temperature Indicated | ||
| 25 Code 3.2 | Charge air temperature sensor. Interrupted or shorted to positive (+). | Check that the connector of the charge air temperature sensor is fitted correctly; Check that the wiring to the charge air temperature sensor is not damaged; Check that the charge air temperature sensor is fitted correctly; Check the function of the charge air temperature sensor; Check the contact pressure in sleeve 2 in the black cable glove of the engine control unit (ECU). | |
| 26 Code 3.2 | Charge air temperature sensor. Short to negative (-). | Check that the wiring to the charge air temperature sensor is not damaged; Check that the charge air temperature sensor is fitted correctly; Check the function of the charge air temperature sensor. | |
| 27 Code 3.3 | Coolant temperature sensor. Interrupted or shorted to positive (+). — Preheating is activated even if the engine is warm. | Coolant temperature sensor. Interrupted or shorted to positive (+). | Check that the connector of the coolant temperature sensor is fitted correctly; Check that the wiring to the coolant temperature sensor is not damaged; Check that the coolant temperature sensor is fitted correctly; Check the function of the coolant temperature sensor. |
| 28 Code 3.3 | Coolant temperature sensor. Short to negative (-). — Preheating is activated even if the engine is warm. | Coolant temperature sensor. Short to negative (-). | Check that the wiring to the coolant temperature sensor is not damaged; Check that the coolant temperature sensor is fitted correctly; Check the function of the coolant temperature sensor. |
| 31 | Not Used | ||
| 31 Code 6.1 | High coolant temperature. — TAD1240–42GE: Limited engine output (if this protective feature has not been disabled by the parameter setting tool). Alarm lamp lights. TWD1240VE: Engine is switched off (if this protective feature has not been disabled by the parameter setting tool). Alarm indicator lights. | High coolant temperature. | Check the coolant level; Check the intercooler (cleanness); Check to see if there is air in the coolant system; Check the pressure cap on the expansion tank; Check the function of the coolant temperature sensor; Check the function of the thermostat. |
| 32 | Code - — The diagnostic lamp does not light during a lamp test. No error codes can be read out. | Diagnostic lamp (linked to the Stand Alone interface). Interruption. | Check that the lamp is not damaged; Check that the wiring to the lamp is not damaged; Check the contact pressure in sleeve ”J” in the 23-pin connector; Check the contact pressure in sleeve 21 in the red cable glove of the engine control unit (ECU). |
| 33 | Manifold Absolute Pressure (MAP) Sensor Circuit High Signal Voltage Indicated | Diagnostic lamp (linked to the Stand Alone interface). Short to negative (-). | Check that the wiring to the lamp is not damaged; Check that the lamp is correctly mounted. |
| 34 | Manifold Absolute Pressure (MAP) Sensor Circuit Low Signal Voltage Indicated | The diagnostic lamp (linked to the Stand Alone interface). Short to positive (+). | Check that the wiring to the lamp is not damaged; Check that the lamp is correctly mounted. |
| 35 Code 4.2 | Alarm for high coolant temp. Linked to Stand Alone interface. Short to negative (-). — Alarm lamp lights constantly. | Alarm for high coolant temp. Linked to Stand Alone interface. Short to negative (-). | Check that the wiring to the alarm lamp is not damaged; Check that the alarm lamp is fitted correctly. |
| 36 Code 4.2 | Alarm for high coolant temp. Linked to Stand Alone interface. Short to positive (+). — Alarm lamp does not work. If the circuit is interrupted during start-up, diagnostics are deactivated. | Alarm for high coolant temp. Linked to Stand Alone interface. Short to positive (+). | Check that the wiring to the alarm lamp is not damaged; Check that the alarm lamp is fitted correctly. |
| 36 Code 6.1 | Limited engine output (if this protective feature has not been disabled by the parameter setting tool). Alarm lamp lights. | Oil temperature is too high | Check the oil level. • Check the oil temperature. • Check the oil system thermostat. • Check the function of the oil temperature sensor. |
| 38 Code 6.5 | Datalink (CAN) error, engine control module (EMS). — Engine not running: the engine cannot be started. Engine running: engine goes to idle and can only be stopped using the emergency stop. | Datalink (CAN) error, engine control module (EMS). | Check that the 8-pin connector is not damaged; Check that the wiring between the CIU and the engine control unit (ECU) is not damaged; Check that sleeves 11 and 12 in the CIU connector are not damaged; Check the contact pressure in sleeves 1 and 2 in the red cable glove of the engine control unit (ECU). |
| 41 | Ignition Control (IC) H Fault | ||
| 41 | Ignition Coil 3 Control Circuit (Scan) — DTC sets when the IC circuit is out of range | Poor connection at ECM (backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, poor terminal to wire connection); Corrosion; Mis-routed harness; Rubbed through wire insulation; Broken wire inside the insulation | If an Ignition Control (IC) DTCs are set at the same time, inspect the IC ground circuits for an open; Replace the ignition coil; Repair the ignition control circuit for a short to voltage; Repair the ignition control circuit for an open or grounded circuit; Inspect for poor connections at the ECM connector and replace the terminal if necessary; Replace the ECM |
| 41 Code 4.6 | Start relay on starter motor. Short to positive (+). — Engine will not start. | Start relay on starter motor. Short to positive (+). | Check that the wiring to the relay is not damaged; Check the function of the relay. |
| 42 Code 4.6 | Start relay on starter motor. Short to negative (-). — Engine will be started -> The starter motor engages, but no start request is made when the ignition is switched on. Engine running -> The starter motor engages, but no start request is made. Engine being started -> The starter motor does not disengage once the engine is started. | Start relay on starter motor. Short to negative (-). | Check that the wiring to the relay is not damaged; Check the function of the relay. |
| 43 Code 5.1 | Main relay. Short to positive (+). — The instrument panel loses power when the key is twisted to start position. The engine will not start. | Main relay. Short to positive (+). | Check that the wiring to the relay is not damaged; Check the function of the relay. |
| 44 | Knock Sensor (KS) 1 Circuit | ||
| 51 | Calibration Checksum Failure | Calibration value does not match known value stored in the EEPROM; improper use of calibration or changes to these calibrations that may alter the designed function of MEFI | Replace or reprogram faulty ECM and verify DTC does not reset |
| 54 | Not Used | ||
| 55 | Not Used | ||
| 57 | Code - | The charge air pressure is too high. | Check the function of the turbocharger; Check the function of the charge air pressure sensor; Check the fuel quantity/unit injector. |
| 58 | Code - — The engine has decreased performance. | The charge air pressure is too low. | Check the function of the air filter; Check the function of the turbocharger; Check the function of the charge air pressure sensor; Check the fuel feed pressure. |
| 60 Code 6.2 | Intake air temperature is too high. — Engine output is limited to 50% (if this protective feature has not been disabled by the parameter setting tool). | Intake air temperature is too high. | Check the coolant level; Check the intercooler (cleanness); Check the function of the charge air temperature sensor; Check the function of the thermostat. |
| 61 | Not Used | ||
| 62 | Not Used | ||
| 63 | Not Used | Voltage feed to sensor. Short to positive (+). | Check the contact pressure in sleeve 5 in the black cable glove of the engine control unit (ECU). |
| 64 | Not Used | Voltage feed to sensor. Short to negative (-). | Check the contact pressure in sleeve 4 in the black cable glove of the engine control unit (ECU). |
| 67 Code 3.4 | Charge air pressure sensor. Short to positive (+). — The engine smokes more than it usually does when accelerating/under loading. | Charge air pressure sensor. Short to positive (+). | Check that the wiring to the charge air pressure sensor is not damaged; Check the function of the charge air pressure sensor. |
| 68 Code 3.4 | Charge air pressure sensor. Interrupted or shorted to negative (-). — The engine smokes more than it usually does when accelerating/under loading. | Charge air pressure sensor. Interrupted or shorted to negative (-). | Check that the connector of the charge air pressure sensor is fitted correctly; Check that the wiring to the charge air pressure sensor is not damaged; Check that the charge air pressure sensor is fitted correctly; Check the function of the charge air pressure sensor; Check the contact pressure in sleeve 3 in the black cable glove of the engine control unit (ECU). |
| 74 Code 5.4 | Preheating relay. Connection interruption. — Preheating cannot be activated. | Preheating relay. Connection interruption. | Check that the wiring to the input on the relay is not damaged; Check the function of the relay; Check the contact pressure in sleeve 36 in the red cable glove of the engine control unit (ECU). |
| 75 Code 5.4 | Preheating relay. Short to negative (-). — Preheating is constantly activated. | Preheating relay. Short to negative (-). | Check that the wiring to the input on the relay is not damaged; Check the function of the relay. |
| 76 Code 5.4 | Preheating relay. Short to positive (+). — Preheating cannot be activated. | Preheating relay. Short to positive (+). | Check that the wiring to the input on the relay is not damaged; Check the function of the relay. |
| 81 | Crankshaft Position (CKP) Sensor Circuit Fault | Replace the CKP sensor. Refer to Crankshaft Position Sensor Replacement | |
| 81 | Camshaft Position (CMP) Sensor Circuit Fault | Replace the CMP sensor. Refer to Camshaft Position Sensor Replacement | |
| 81 | Injector Driver A Circuit High, Low, Open | ||
| 81 | 5 Volt Reference Circuit Out of Range | ||
| 81 | CAN Bus Fault | ||
| 82 | Code 9.8 — CIU returns to factory settings. | EEPROM error, CIU. | Replace the CIU unit. |
| 97°C | Coolant temp and oil pressure switches | ||
| 101 Code 2.4 | Tachometer sensor, flywheel. Intermittent signal. — The engine is extremely hard to start and runs unevenly if it does. | Tachometer sensor, flywheel. Intermittent signal. | Check that the tachometer sensor connector is fitted correctly; Check that the wiring to the tachometer sensor is not damaged; Check that the tachometer sensor is correctly fitted in the flywheel housing; Check the function of the tachometer sensor; Check the contact pressure in sleeves 30 and 31 in the black cable glove of the engine control unit (ECU). |
| 102 Code 2.5 | RPM sensor, camshaft. No signal. — The engine takes longer than normal to start. The engine runs normally once underway. | RPM sensor, camshaft. No signal. | Check that the tachometer sensor connector is fitted correctly; Check that the wiring to the tachometer sensor is not damaged; Check that the tachometer sensor is correctly fitted in the upper timing cover; Check the function of the tachometer sensor; Check the contact pressure in sleeves 7 and 18 in the black cable glove of the engine control unit (ECU). |
| 103 Code 2.5 | RPM sensor, camshaft. Abnormal frequency. — The engine takes longer than normal to start. The engine runs normally once underway. | RPM sensor, camshaft. Abnormal frequency. | Check that the tachometer sensor connector is fitted correctly; Check that the wiring to the tachometer sensor is not damaged; Check that the tachometer sensor is correctly fitted in the upper timing cover; Check the function of the tachometer sensor. |
| 103°C | Coolant temp and oil pressure switches | ||
| 105 Code 6.5 | Datalink error (CAN). — Engine not running -> The engine cannot be started. Engine running -> Engine goes to idle and can only be stopped with the emergency stop. | Datalink error (CAN). | Check that the 8-pin connector is not damaged; Check that the wiring between the CIU and the engine control unit (ECU) is not damaged; Check that sleeves 11 and 12 in the CIU connector are not damaged; Check the contact pressure in sleeves 1 and 2 in the red cable glove of the engine control module (EMS). |
| 106 Code 6.5 | Datalink error (CAN). — Engine not running -> The engine cannot be started. Engine running -> Engine goes to idle and can only be stopped with the emergency stop. | Datalink error (CAN). | Check that the 8-pin connector is not damaged; Check that the 8-pin cable between the CIU and the engine control unit (ECU) is not damaged; Check that sleeves 11 and 12 in the CIU connector are not damaged; Check the contact pressure in sleeves 1 and 2 in the red cable glove of the engine control unit (ECU). |
| 107 Code 4.6 | Starter motor relay. Circuit interruption. — Engine will not start. | Starter motor relay. Circuit interruption. | Check that the cable to the starter motor (yellow/black) is correctly connected; Check that the cable to the starter motor (yellow/black) is not damaged; Check that the relay on the starter motor is whole; Check the contact pressure in sleeve 31 in the red cable glove of the engine control unit (ECU). |
| 108 Code 4.7 | Start input, engine control unit (ECU). Short to negative (-). — Engine will not start. | Start input, engine control unit (ECU). Short to negative (-). | Check that the wiring to the ignition key/start button is not damaged; Check the contact pressure in sleeve "E" in the 23-pin connector; Check the contact pressure in sleeve 17 in the connector on the engine. |
| 109 Code 4.8 | Stop input engine control unit (ECU). Short to negative (-). — The engine can only be stopped using the emergency stop on the engine. | Stop input engine control unit (ECU). Short to negative (-). | Check that the wiring to the ignition key/start button is not damaged; Check the contact pressure in sleeve "H" in the 23-pin connector; Check the contact pressure in sleeve 6 in the connector on the engine. |
| 110 Code 7.1 | Unit injector cylinder #1. Electronic error. — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #1. Electronic error. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 111 | Code 7.1 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #1. Electronic error. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 112 | Code 7.1 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #1. Electronic error. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 113 | Code 7.1 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #1. Electronic error. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 114 | Code 7.1 — Cylinder balance is adversely affected -> Uneven running at low RPM and low load. | Error in compression or the unit injector on cylinder #1. | Check the fuel feed pressure; Check the valve clearance; Check that the unit injector and connection cable are not damaged; Do a compression test and check cylinder #1. |
| 115 | Code 7.1 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #1. Electronic error. | Check the contact pressure in sleeve 11 in the black cable glove of the engine control unit (ECU); Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 120 | Code 7.2 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #2. Electronic error. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 121 | Code 7.2 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #2. Electronic error. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 122 | Code 7.2 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #2. Electronic error. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 123 | Code 7.2 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #2. Electronic error. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 124 | Code 7.2 — Cylinder balance is adversely affected -> Uneven running at low RPM and low load. | Error in compression or the unit injector on cylinder #2. | Check the fuel feed pressure; Check the valve clearance; Check that the unit injector and connection cable are not damaged; Do a compression test and check cylinder #2; Check the fuel feed pressure. |
| 125 | Code 7.2 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #2. Electronic error. | Check the contact pressure in sleeve 22 in the black cable glove of the engine control unit (ECU); Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 130 | Code 7.3 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #3. Electronic error. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 131 | Code 7.3 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #3. Electronic error. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 132 | Code 7.3 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #3. Electronic error. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 133 | Code 7.3 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #3. Electronic error. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 134 | Code 7.3 — Cylinder balance is adversely affected -> Uneven running at low RPM and low load. | Error in compression or the unit injector on cylinder #3. | Check the fuel feed pressure; Check the valve clearance; Check that the unit injector and connection cable are not damaged; Do a compression test and check cylinder #3. |
| 135 | Code 7.3 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #3. Electronic error. | Check the contact pressure in sleeve 23 in the black cable glove of the engine control unit (ECU); Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 140 | Code 7.4 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #4. Electronic error. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 141 | Code 7.4 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #4. Electronic error. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 142 | Code 7.4 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #4. Electronic error. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 143 | Code 7.4 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #4. Electronic error. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 144 | Code 7.4 — Cylinder balance is adversely affected -> Uneven running at low RPM and low load. | Error in compression or the unit injector on cylinder #4. | Check the fuel feed pressure; Check the valve clearance; Check that the unit injector and connection cable are not damaged; Do a compression test and check cylinder #4. |
| 145 | Code 7.4 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #4. Electronic error. | Check the contact pressure in sleeve 34 in the black cable glove of the engine control unit (ECU); Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 150 | Code 7.5 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #5. Electronic error. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 151 | Code 7.5 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #5. Electronic error. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 152 | Code 7.5 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #5. Electronic error. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 153 | Code 7.5 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #5. Electronic error. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 154 | Code 7.5 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Error in compression or the unit injector on cylinder #5. | Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged; Do a compression test and check cylinder #5. |
| 155 | Code 7.5 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #5. Electronic error. | Check the contact pressure in sleeve 35 in the black cable glove of the engine control unit (ECU); Check that the wiring to the unit injectors is not damaged; Check that the connections to the unit injector are not damaged. |
| 160 | Code 7.6 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #6. Electronic error. | Check that the wiring to the unit injector is not damaged; Check that the connection to the unit injector is not damaged. |
| 161 | Code 7.6 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #6. Electronic error. | Check that the wiring to the unit injector is not damaged; Check that the connection to the unit injector is not damaged. |
| 162 | Code 7.6 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #6. Electronic error. | Check that the wiring to the unit injector is not damaged; Check that the connection to the unit injector is not damaged. |
| 163 | Code 7.6 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #6. Electronic error. | Check that the wiring to the unit injector is not damaged; Check that the connection to the unit injector is not damaged. |
| 164 | Code 7.6 — Cylinder balance is adversely affected -> Uneven running at low RPM and low load. | Error in compression or the unit injector on cylinder #6. | Check the fuel feed pressure; Check the valve clearance; Check the unit injector and the connection cable; Do a compression test and check cylinder #6. |
| 165 | Code 7.6 — The engine runs on 5 cylinders, sounds uneven and has decreased performance. | Unit injector cylinder #6. Electronic error. | Check the contact pressure in sleeve 35 in the black cable glove of the engine control unit (ECU); Check that the wiring to the unit injector is not damaged; Check that the connection to the unit injector is not damaged. |
| 173 | Code - — Diagnostic lamp shows only CIU internal errors. | Datalink (J1708) error, engine control unit (ECU). | Check that the 8-pin connector is not damaged; Check that the 8-pin cable between the CIU and the engine control unit (ECU) is not damaged; Check that pin/sleeve 22 and 37 in the connector on the CIU are not damaged; Check the contact pressure in sleeves 25 and 26 in the red cable glove of the engine control unit (ECU). |
| 175 Code 2.1 | Water in the fuel or low fuel pressure. — Alarm lamp lights. | Water in the fuel or low fuel pressure. | Check the fuel dehumidification filter (drain the fuel tank); Check if it is possible to increase the pressure using the hand pump; Check the fuel filter; Check the fuel pre-filter. |
| 176 | Code - | Monitor for water in the fuel or low fuel pressure. Short to positive (+). | Check that the wiring is not damaged. |
| 180 Code 6.6 | Oil pressure is too low. — Engine is switched off (if this protective feature has not been disabled by the parameter setting tool). Alarm lamp lights. | Oil pressure is too low. | Check the oil level; Check that the oil filter is not clogged; Check the system pressure valves and the safety valve in the oil system; Check the function of the oil pressure sensor. |
| 181 Code 3.1 | Oil pressure sensor. Short to positive (+). | Check that the wiring to the oil pressure sensor is not damaged; Check that the oil pressure sensor is connected correctly. | |
| 182 Code 3.1 | Oil pressure sensor. Interrupted or shorted to negative (-). | Check that the wiring to the oil pressure sensor is not damaged; Check that the oil pressure sensor is connected correctly; Check the contact pressure in sleeve 14 in the black cable glove of the engine control unit (ECU). | |
| 183 Code 5.8 | Oil temperature is too high. — Limited engine output (if this protective feature has not been disabled by the parameter setting tool). Alarm lamp lights. | Oil temperature is too high. | Check the oil level; Check the oil temperature; Check the oil system thermostat; Check the function of the oil temperature sensor. |
| 184 Code 3.7 | Oil temperature sensor. Interrupted or shorted to positive (+). | Check that the wiring to the oil temperature sensor is not damaged; Check that the oil temperature sensor is correctly connected; Check the contact pressure in sleeve 1 in the black cable glove of the engine control unit (ECU). | |
| 185 Code 3.7 | Oil temperature sensor. Short to negative (-). | Check that the wiring to the oil temperature sensor is not damaged; Check that the oil temperature sensor is correctly connected. | |
| 186 | Code - — Engine will not start. | Memory error in the engine control module (EMS). | Replace the engine control unit (ECU). |
| 187 | Code - — Engine will not start. | Memory error in the engine control module (EMS). | Replace the engine control unit (ECU). |
| 188 | Code - — Engine will not start; engine control unit (ECU) is in programming mode. | Programming plug (EOL). Short to positive (+). | Check that the EOL contact is not strapped; Check that the wiring to the EOL contact is not damaged. |
| 189 | Code - | Programming plug (EOL). Short to negative (-). | Check that the wiring to the EOL contact is not damaged. |
| 191 Code 2.2 | Low coolant level. — Engine is switched off (if this protective feature has not been disabled by the parameter setting tool). Alarm lamp lights. | Low coolant level. | Check the coolant level; Check the function of the coolant level monitor. |
| 192 | Code - | Coolant level monitor. Short to positive (+). | Check that the wiring to the coolant level monitor is not damaged; Check that the coolant level monitor is fitted correctly. |
| 200 Code 4.1 | Oil pressure alarm, circuit interrupted. — Alarm lamp does not work. If the circuit is interrupted during start-up, diagnostics are deactivated. | Oil pressure alarm, circuit interrupted. | Check the alarm lamp; Check that the wiring to the alarm lamp is not damaged; Check sleeve "L" in the 23-pin connector; Check the contact pressure in sleeve 35 in the red cable glove of the engine control unit (ECU). |
| 201 Code 4.1 | Oil pressure alarm. Short to negative (-). — Alarm lamp lights constantly. | Oil pressure alarm. Short to negative (-). | Check that the wiring and connection to the alarm lamp are not damaged. |
| 202 Code 4.1 | Oil pressure alarm. Short to positive (+). — Alarm lamp does not work. If the circuit is interrupted during start-up, diagnostics are deactivated. | Oil pressure alarm. Short to positive (+). | Check that the wiring and connection to the alarm lamp are not damaged. |
| 203 Code 4.5 | Low coolant alarm. Circuit interruption. — Alarm lamp does not work. If the circuit is interrupted during start-up, diagnostics are deactivated. | Low coolant alarm. Circuit interruption. | Check the alarm lamp; Check that the wiring to the alarm lamp is not damaged; Check sleeve "N" in the 23-pin connector; Check the contact pressure in sleeve 33 in the black cable glove of the engine control unit (ECU). |
| 204 Code 4.5 | Low coolant alarm. Short to negative (-). — Alarm lamp lights constantly. | Low coolant alarm. Short to negative (-). | Check that the wiring and connection to the alarm lamp are not damaged. |
| 205 Code 4.5 | Low coolant alarm. Short to positive (+). — Alarm lamp does not work. If the circuit is interrupted during start-up, diagnostics are deactivated. | Low coolant alarm. Short to positive (+). | Check that the wiring and connection to the alarm lamp are not damaged. |
| 208 Code 5.2 | Start input on CIU. Short to negative (-). — The engine cannot be started. | Start input on CIU. Short to negative (-). | Check that the connections to the ignition key are not damaged; Check that the wiring to the ignition key is not damaged. |
| 209 Code 5.3 | Stop input on CIU. Short to negative (-). — The engine can only be stopped using the emergency stop on the engine. | Stop input on CIU. Short to negative (-). | Check that the connections to the ignition key are not damaged; Check that the wiring to the ignition key is not damaged. |
| 210 Code 5.2 | Start input on CIU. Short to positive (+) or activated too long. — The engine starts immediately when the ignition is turned on. | Start input on CIU. Short to positive (+) or activated too long. | Check that the connections to the ignition key are not damaged; Check that the wiring to the ignition key is not damaged. |
| 211 Code 5.3 | Stop input on CIU. Short to positive (+) or activated too long. — The engine stops. After 40 seconds an error code is shown. During this time, the engine cannot be started. When the error code is blinked out on the diagnostic lamp, the engine can be started but not stopped. | Stop input on CIU. Short to positive (+) or activated too long. | Check that the connections to the ignition key are not damaged; Check that the wiring to the ignition key is not damaged. |
| 212 | Code 9.8 — The engine goes to idle. | Flash memory error, CIU. | Replace the CIU unit. |
| 213 Code 6.4 | Datalink (CAN) error, CIU. — Instruments and alarm lamps stop working. | Datalink (CAN) error, CIU. | Check that the 8-pin connector is not damaged; Check that the wiring between the CIU and the engine control unit (ECU) is not damaged; Check that sleeves 11 and 12 in the CIU connector are not damaged; Check the contact pressure in sleeves 1 and 2 in the red cable glove of the engine control unit (ECU). |
| 214 Code 5.3 | Stop input on CIU. Interrupted or activated too long. — The engine stops. After 40 seconds an error code is shown. During this time, the engine cannot be started. When the error code is blinked out on the diagnostic lamp, the engine can be started but not stopped. | Stop input on CIU. Interrupted or activated too long. | Check that the connections to the ignition key are not damaged; Check that the wiring to the ignition key is not damaged. |
| 220 Code 4.3 | Lamp to indicate operation. Interruption. — Indicator lamp does not work. If the circuit is interrupted during start-up, diagnostics are deactivated. | Lamp to indicate operation. Interruption. | Check the alarm lamp; Check that the wiring to the alarm lamp is not damaged; Check sleeve "N" in the 23-pin connector; Check the contact pressure in sleeve 33 in the black connector of the engine control unit (ECU). |
| 221 Code 4.3 | Lamp to indicate operation. Short to negative (-). — The indicator lamp shines constantly. | Lamp to indicate operation. Short to negative (-). | Check that the wiring and connection to the alarm lamp are not damaged. |
| 222 Code 4.3 | Lamp to indicate operation. Short to positive (+). — Indicator lamp does not work. If the circuit is interrupted during start-up, diagnostics are deactivated. | Lamp to indicate operation. Short to positive (+). | Check that the wiring and connection to the alarm lamp are not damaged. |
| 223 Code 4.4 | Overspeed alarm. Circuit interruption. — Alarm lamp does not work. If the circuit is interrupted during start-up, diagnostics are deactivated. | Overspeed alarm. Circuit interruption. | Check the alarm lamp; Check that the wiring to the alarm lamp is not damaged; Check sleeve "O" in the 23-pin connector; Check the contact pressure in sleeve 36 in the black cable glove of the engine control unit (ECU). |
| 224 Code 4.4 | Overspeed alarm. Short to negative (-). — Alarm lamp lights constantly. | Overspeed alarm. Short to negative (-). | Check that the wiring and connection to the alarm lamp are not damaged. |
| 225 Code 4.4 | Overspeed alarm. Short to positive (+). — Alarm lamp does not work. If the circuit is interrupted during start-up, diagnostics are deactivated. | Overspeed alarm. Short to positive (+). | Check that the wiring and connection to the alarm lamp are not damaged. |
| 226 Code 4.2 | Alarm for high coolant temp. Circuit interruption. — Alarm lamp does not work. If the circuit is interrupted during start-up, diagnostics are deactivated. | Alarm for high coolant temp. Circuit interruption. | Check the alarm lamp for high coolant temperature; Check that the wiring to the alarm lamp is not damaged; Check sleeve "N" in the 23-pin connector; Check the contact pressure in sleeve 33 in the black cable glove of the engine control unit (ECU). |
| 231 | Code - — Pre-heating can not be activated. | Input for preheating request. Short to negative (-). | Check that the wiring and the connection to the preheating switch are not damaged. |
| 233 | Code - — Diagnostic codes from the engine cannot be read from the diagnostic lamp. | Datalink error (J1708), CIU. | Check that the 8-pin connector is not damaged; Check that the wiring between the CIU and the engine control unit (ECU) is not damaged; Check pin/sleeve 22 and 37 in the connector on the CIU; Check the contact pressure in sleeves 25 and 26 in the red cable glove of the engine control unit (ECU). |
| 254 | Code 9.8 — The engine cannot be started, if the engine is running -> Idle. | Controller failure, CIU | Replace the CIU unit. |
| 255 | Code 9.9 — The engine cannot be started (varies). | Memory error in the engine control module (EMS). | Replace the engine control module (EMS). |
| 738 | Air filter restriction indicator | ||
| DTC 12 | Diagnostic Trouble Code 12 | ||
| DTC 14 | Engine Coolant Temperature (ECT) Sensor Circuit - Low Temperature Indicated | ||
| DTC 15 | Engine Coolant Temperature (ECT) Sensor Circuit - High Temp Indicated | ||
| DTC 21 | Throttle Position (TP) Sensor Circuit - Signal Voltage High (Non-Scan) | ||
| DTC 22 | Throttle Position (TP) Sensor Circuit - Signal Voltage Low (Non-Scan) | ||
| DTC 23 | Intake Air Temperature (IAT) Sensor Circuit - Low Temp Indicated (Non-Scan) | ||
| DTC 25 | Intake Air Temperature (IAT) Sensor Circuit - High Temp Indicated (Non-Scan) | ||
| DTC 33 | Manifold Absolute Pressure (MAP) Sensor Circuit - Signal Voltage High (Non-Scan) | ||
| DTC 34 | Manifold Absolute Pressure (MAP) Sensor Circuit - Signal Voltage Low (Non-Scan) | ||
| DTC 41 | Ignition Coil 1 Control Circuit (Scan) | ||
| DTC 44 | Knock Sensor (KS) 1 Circuit (Scan) | ||
| DTC 51 | Calibration Checksum Failure | ||
| DTC 81 | Cuts Out, Misses Symptom | ||
| DTC-81 | Non-Scan DiagnosticS | ||
| PID 48, Code 2.9.2 | Atmospheric pressure — A fault code is generated. The fault code disappears when the pressure returns to normal. Monitoring function for air pressure is activated. | Air pressure is outside permissible values. | Turn the ignition off and on, and check if the fault code remains. |
| PID 91, Code 2.2.1 | Accelerator pedal sensor — The engine goes into “limp home” mode. | Faulty sensor, connector or cable. | Check the sensor cable for breaks and short circuits.; Check sensor function. Change the sensor as necessary. |
| PID 100, Code 2.2.4 | Oil pressure sensor — A fault code is generated. | Faulty sensor, connector or cable. | Check the sensor cable for breaks and short circuits.; Check sensor function. Change the sensor as necessary. |
| PID 100, Code 2.3.1 | Warning, oil pressure — A fault code is generated. The fault code disappears when the oil pressure exceeds the recuperation value. | Oil pressure below specified limit value (depends on engine speed). | Check the oil level and oil pump.; Check the sensor cable for breaks and short circuits.; Check sensor function. Change the sensor as necessary.; Check the limit value for oil pressure warning. |
| PID 102, Code 2.2.3 | Charge pressure sensor — A fault code is generated. | Faulty sensor, connector or cable. | Check the sensor cable for breaks and short circuits.; Check sensor function. Change the sensor as necessary. |
| PID 110, Code 2.2.5 | Temperature sensor, coolant — A fault code is generated. | Faulty sensor, connector or cable. | Check the sensor cable for breaks and short circuits.; Check sensor function. Change the sensor as necessary. |
| PID 110, Code 2.3.2 | Warning, coolant temperature — A fault code is generated. The fault code disappears when the coolant temperature falls below the recuperation value. | Excessive coolant temperature | Check the coolant.; Check the sensor cable for breaks and short circuits.; Check sensor function. Change the sensor as necessary. |
| PID 111, Code 2.3.5 | Warning, coolant level — A fault code is generated. | Coolant level too low | Check the coolant level.; Check the sensor cable for breaks and short circuits.; Check sensor function (if installed). Change the sensor as necessary. |
| PID 158, Code 2.8.2 | Reference voltage 1 — A fault code is generated. The fault code disappears when the voltage returns to within the permissible limit values (5 V). | Reference voltage for actuator exceeds permissible limit values. | Check the voltage supplied.; Turn the ignition off and on, and check if the fault code remains. |
| PID 158, Code 2.9.1 | Control unit, voltage supply — A fault code is generated. The fault code disappears when the voltage returns to within the permissible limit values. | Voltage supplied to actuator exceeds permissible limit values. | Turn the ignition off and on, and check if the fault code remains. |
| PID 174, Code 2.2.7 | Fuel temperature sensor — A fault code is generated. | Faulty sensor, connector or cable. | Check the sensor cable for breaks and short circuits.; Check sensor function. Change the sensor as necessary. |
| PID 174, Code 2.3.7 | Warning, fuel temperature — A fault code is generated. The fault code disappears when the fuel temperature falls below the recuperation value. | Excessive fuel temperature. | Check the fuel.; Check the sensor cable for breaks and short circuits.; Check sensor function. Change the sensor as necessary. |
| PID 190, Code 2.1.1 | Engine speed sensor, camshaft — Engine is shut off. | Faulty sensor, connector, cables or incorrect distance to cam wheel. High frequency interference. | Check that the engine speed sensor is installed with the correct distance to the camshaft.; Check the cables for the engine speed sensor for breaks and short circuits.; Check the connector for poor contact.; Check engine speed sensor function. Change the sensor as necessary. |
| PID 190, Code 2.1.4 | Overspeed — Fuel injection ceases and the fault code lamp lights up until the engine speed falls below the permissible limit again. | The engine speed is or has been higher than the permissible limit. | Check the control rod for the injection pumps.; Check the actuator, replace it if necessary.; Check the cables for the actuator for breaks and short circuits.; Check the number of teeth on the camshaft wheel.; For VE engines, it may be necessary to check the function of the “limp home” mode |
| PID 190, Code 2.3.6 | Overspeed in limp home mode — GE: Engine is shut off. A fault code is generated. VE: Fuel injection ceases when the control rod returns to its home position and the fault code lamp lights up until the engine speed falls below the permissible limit again. | When the limp home mode is activated and the engine speed is or has been higher than the permissible limit value. | Check the control rod for the injection pumps.; Check the actuator, replace it if necessary.; Check the cables for the actuator for breaks and short circuits.; Check the number of teeth on the camshaft wheel.; For VE engines, it may be necessary to check the function of the “limp home” mode |
| SID 23, Code 2.5.1 | Control rod position sensor, difference — A fault code is generated. The fault code disappears when the difference between control rod current value and nominal value falls below 10%. | Injection pump/actuator has got stuck or is not connected. Difference between control rod current value and nominal value exceeds 10%. | Check the control rod for the injection pumps.; Check the actuator, control rod and injection pumps. Change as necessary.; Check the cables for the actuator for breaks and short circuits. |
| SID 23, Code 2.5.2 | Injection pump, auto calibration — The engine is emergency stopped and can not be re-started until the fault is rectified. The regulator can not be activated. | Automatic actuator equalization is not possible. Faulty calibration. | Check the actuator. Change as necessary.; Check the actuator cables.; Turn the ignition off and on, and check if the fault code remains. |
| SID 24, Code 2.5.1 | Control rod position sensor — Engine is emergency stopped. Actuator can not be controlled. | Actuator not connected. Faulty value from control rod position sensor in actuator. | Check the actuator. Change as necessary.; Check the cables for the actuator for breaks and short circuits. |
| SID 32/SPN 1188 | Wastegate — Warning lamp lights up; Engine control unit limits engine power | Short circuit to positive (+) or negative (−); Open circuit; Wastegate damaged mechanically | Check that the wastegate connector is properly mounted; Check that the wiring to the wastegate is not damaged; Check that the wastegate is correctly mounted; Check the wastegate |
| SID 231, Code 2.7.1 | Communication fault, CAN bus — -- | CAN controller for CAN bus is faulty. | Check the cables.; Check the control unit. |
| SID 240, Code 2.8.1 | Cyclical program test — The engine is emergency stopped and can not be re-started until the fault is rectified. | Memory fault | Turn the ignition off and on, and check if the fault code remains. |
| SID 240, Code 2.10.1 | Stack overflow — The engine is emergency stopped and can not be re-started until the fault is rectified. | Internal calculation fault. | Turn the ignition off and on, and check if the fault code remains. |
| SID 252, Code 2.8.1 | Parameter programming — The engine is emergency stopped and can not be re-started until the fault is rectified. | Memory fault | Turn the ignition off and on, and check if the fault code remains. |
| SID 253, Code 2.10.1 | Parameter fault — Engine can not be started. | No data or incorrect data (fault only occurs during parameter setting or reset). | Check parameter settings.; Turn the ignition off and on, and check if the fault code remains. |
Compiled from Volvo Penta service manuals and controller documentation. 17 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.
No faults — There are no active faults.. Cause: There are no active faults..
Exhaust Temperature (PID 173/SPN 1184) — Warning lamp lights up; Engine is shutdown. Cause: Exhaust temperature to high. Remedy: Insufficient air supply; Low coolant level; Air in the coolant system; Faulty circulation pump; Blocked charge air cooler; High temperature, charge air cooler; High back pressure in the exhaust system; Check wastegate function.
No faults. Remedy: There are no active faults..
Water in Fuel (PID/SPN 97). Cause: Water in fuel. Remedy: Empty the primary fuel filter.
Water in Fuel (Code 2.1, PID/SPN 97). Remedy: * Empty the primary fuel filter indicator for Water in Fuel (Code 2.9, PID/SPN 97).
Coolant Level (PID/SPN 111) — Engine control module reduces engine power (unless the protection has been shut off with the VODIA diagnostic tool). Cause: Low coolant level. Remedy: Check the coolant level; Check coolant level monitor function.
Coolant Level Sensor (PID/SPN 111). Cause: Short circuit to positive (+); Fault in sensor. Remedy: Check that the coolant level sensor cable is not damaged; Check coolant level sensor function.
Engine Speed (PID/SPN 190). Cause: Engine speed too high. Remedy: After the engine has stopped, look for the reason for the high speed.
Indicator for Water in Fuel (PID/SPN 97). Cause: Short circuit; Open circuit; Fault in indicator. Remedy: Check the indicator cables for breaks and short circuits; Check indicator function. Change indicator as necessary.
Oil Pressure Sensor (PID/SPN 100). Cause: Short circuit to positive (+) or earth (ground) (−); Open circuit. Remedy: Check that the oil pressure sensor cable is not damaged; Check that the oil pressure sensor is correctly connected.
Oil Pressure Sensor (Code 3.1, PID/SPN 100). Remedy: * Check that the oil pressure sensor cable is not damaged * Check that the oil pressure sensor is correctly connected * Check oil pressure sensor function.
Boost Temperature Sensor (Code 3.2, PID/SPN 105). Remedy: * Check that the boost temperature sensor connector is correctly installed * Check that the boost temperature sensor cable is not damaged * Check that the boost temperature sensor is correctly installed * Check boost temperature sensor function.
Coolant Temperature Sensor (PID/SPN 110) — Preheating is also activated when the engine is hot. Cause: Short circuit to positive (+) or earth (ground) (−); Open circuit. Remedy: Check that the coolant temperature sensor connector is correctly installed; Check that the coolant temperature sensor cable is not damaged; Check that the coolant temperature sensor is correctly installed; Check coolant temperature sensor function.
Boost Pressure Sensor (Code 3.4, PID/SPN 102/106). Remedy: * Check that the boost pressure sensor connector is correctly installed * Check that the boost pressure sensor cable is not damaged * Check that the boost pressure sensor is correctly installed * Check boost pressure sensor function.