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Fault Codes of Volvo Power Generator




Fault Codes of Volvo Power Generator

Fault Codes
WARNING! Read the safety instructions for handling and service in chapter “Safety information” before starting work.

NOTE: Reading the fault codes below, such as Code 2.1, PID /SPN 97, where 2.1 is a flash code indicated by a flashing diagnostic lamp. PID / SPN 97 is read with the VODIA diagnostic tool. When using DCU or DU, the fault code is displayed as plain text.

For a further explanation, see “Reading fault codes”.

NOTE: Please refer to “Wiring schedule CIU and DCU” for references to the sockets in the electrical connectors on the engine control unit.

Code 1.1 No faults

There are no active faults.

Code 2.1, PID / SPN 97. Water in fuel

Reason:

• Water in fuel.

Reaction:

• None.

Action:

• Empty the fuel pre-filter.



Code 2.2, PID / SPN 111. Coolant level

Reason:

• Low coolant level.

Reaction:

• Engine control module reduces engine power (unless the protection has been shut off with the VODIA diagnostic tool).

• Engine stopped

Action:

• Check the coolant level.

• Check coolant level monitor function.

Code 2.3, PID / SPN 111. Coolant level sensor

Reason:

• Short circuit to positive (+).

• Fault in sensor.

Reaction:

• None.

Action:

• Check that the coolant level sensor cable is not damaged.

• Check coolant level sensor function.

Code 2.4, SID 22 / SPN 637 Engine speed sensor, flywheel

Reason:

• No signal.

• Abnormal frequency.

• Intermittent signal from the sensor.

• Fault in sensor.

Reaction:

• Engine is very difficult to start and runs roughly when it starts.

Action:

• 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 casing.

• Check engine speed sensor function.


Code 2.5, SID 21 / SPN 636 Volvo Engine speed sensor, camshaft

Reason:

• No signal.

• Abnormal frequency.

• Fault in sensor.

Reaction:

• Engine takes longer to start than normal. Engine runs normally when running.

Action:

• Check that the engine speed sensor connector is correctly installed.

• Check that the wiring to the engine speed sensor is not damaged.

• Check that the engine speed sensor is correctly installed in the upper timing gear cover.

• Check engine speed sensor function.

Code 2.6, PID / SPN 190. Volvo Engine speed

Reason:

• Engine speed too high.

Reaction:

• None.

Action:

• After the engine has stopped, look for the reason for the high speed.

Code 2.8, PPID 132 / SPN 608 Engine speed potentiometer connected to CIU

Reason:

• Short circuit to positive (+) or earth (ground) (-).

• Fault in sensor.

Reaction:

• Engine goes to idle.

• rpm is frozen.

Action:

• Check that the potentiometer is correctly connected.

• Check that the potentiometer cable is not damaged.

• Check potentiometer function.


Code 2.9, PID / SPN 97 Indicator for water in fuel

Reason:

• Short circuit.

• Open circuit.

• Fault in indicator.

Reaction:

• None.

Action:

• Check the indicator cables for breaks and short circuits.

• Check indicator function. Change indicator as necessary.

Code 3.1, PID / SPN 100. Oil pressure sensor

Reason:

• Short circuit to positive (+) or earth (ground) (-).

• Open circuit.

Reaction:

• None.

Action:

• Check that the potentiometer cable is not damaged.

• Check that the oil pressure sensor is correctly connected.


Code 3.2, PID / SPN 105 Charge air temperature sensor

Reason:

• Short circuit to positive (+) or earth (ground) (-).

• Open circuit.

Reaction:

• None.

Action:

• 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.

Code 3.3, PID / SPN 110 Coolant temperature sensor

Reason:

• Short circuit to positive (+) or earth (ground) (-).

• Open circuit.

Reaction:

• Pre-heating is also activated when the engine is hot.

Action:

• 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.

Code 3.4, PID / SPN 106/102. Charge Pressure sensor

Reason:

• Short circuit to positive (+) or earth (ground) (-).

• Open circuit.

Reaction:

• Engine smokes more than normally during acceleration/load increase.

Action:

• Check that the charge 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 the function of the charge air pressure sensor.

Code 3.5, PID / SPN 106/102. Charge pressure

Reason:

• Charge pressure too high.

Reaction:

• Engine control module reduces engine power (unless the protection has been shut off with the VODIA diagnostic tool).

Action:

• Check turbocharger compressor function.

• Check the function of the charge air pressure sensor.

• Check fuel volume/injector.

Code 3.6, PID / SPN 94. Fuel pressure sensor

Reason:

• Short circuit to positive (+) or earth (ground) (-).

• Open circuit.

Reaction:

• None.

Action:

• 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 cable is correctly installed.

• Check fuel pressure sensor function.

Code 3.8, PID / SPN 94. Fuel pressure

Reason:

• Low supply pressure.

Reaction:

• None.

Action:

• Check if it is possible to build up pressure with the hand pump.

• Check the fuel filter.

• Check the fuel pre-filter.

Code 3.9, PID / SPN 158. Battery voltage, EMS

Reason:

• Faulty alternator.

• Faulty battery cables, faulty battery.

Reaction:

• None.

Action:

• Check the supply voltage to the control unit.

Code 4.6, PPID 3 / SID 39 / SPN 677 Start output / Starter motor relay

Reason:

• Short circuit to positive (+) or earth (ground) (-).

• Activated for too long time.

Reaction:

• Engine can not be started.

• The engine starts as soon as the ignition is switched on.

Action:

• Check that the starter switch connections are not damaged.

• Check that the wiring to the starter key is not damaged.

Code 4.8, PPID 6 / SPN 970  Stop input EMS

Reason:

• Short circuit to negative (-).

• Open circuit.

Reaction:

• The engine can only be stopped via the auxiliary stop (Or via the CAN link.)

Action:

• Check that the connections and cables are not damaged.

Code 5.2, PPID 4 / SPN 520194 Start input CIU

Reason:

• Short circuit to negative (-).

• Activated for too long time.

Reaction:

• Engine can not be started.

• The engine starts as soon as the ignition is switched on.

Action:

• Check that the starter switch connections are not damaged.

• Check that the wiring to the starter key is not damaged.

Code 5.3, PPID 6 / SPN 520195. Stop input CIU

Reason:

• Short circuit to negative (-).

• Open circuit.

• Activated for too long time.

Reaction:

• 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 cannot be started during this time. When a fault code is active, the engine can be started but not stopped.

Action:

• Check that the starter switch connections are not damaged.

• Check that the wiring to the starter key is not damaged.



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