When the engine or the generator fails

P10DC Set a diagnostic fault code when the engine or generator fails but this fault is set if miss fueling /fill up with diesel/ or any damage to the engine so this need to look around. So the diagnostic procedure is very important. The first step is always the engine if the engine does not run that need to sort out. Before starting to do just check the engine oil level and coolant level this can give you a reference easier to find anything.

-Engine spin by generator for 20 sec if engine not running the fault on the engine side.

-Engine runs but misfires or runs badly and needs more diagnostic procedures.

-The engine runs fine something with the generator happen or a Peak torque limiter, but should have another fault code on the list that needs to check out.

High-voltage systems can kill you so if you are not a qualified technician do not dismantle orange cable or high-voltage components.

Possible fail.

Malfunction of the engine.

Malfunction of the engine-ECU.

Malfunction of the generator.

Malfunction of the power drive unit (GCU).

Malfunction of the PHEV-ECU.


Starting impossible & long time to start

So check out these couple bits first like a 12V battery, spark plug, fuel is right not the diesel in, blocked air filter or intake, the timing chain is the correct time, additional fault code possible damaged wire harness.

-Failed auxiliary battery

-Failed ignition system

-Failed fuel system

-Failed air-fuel ratio control system

-Failed intake air system

-Contamination around the throttle valve

-The timing chain is out of place

-Improper compression pressure

-Failed engine-ECU

When driving knocking.

A sharp sound like a hammer striking on the cylinder walls during the driving can be heard and wrongly affects the driving. Failure is possibly caused by the failed knock control system and improper thermal value of the spark plug.

-Failed knock sensor

-Failed to knock the control system

-Failed spark plug

-Failed ignition system Failed engine-ECU

Visual check of the ignition spark.

Remove the spark plug and install it to the ignition coil. Connect the ignition coil connector. Disconnect all injector connectors. At the engine start, check each spark plug produces a spark. If fail and should you have other fault code. Failure is possibly caused by failed crank angle sensor and camshaft position sensor or an improperly assembled timing chain. Failed crank angle sensor, Failed camshaft position sensor and Timing chain in out of place.

StoppingRun on (dieseling)

Failure is possibly by leakage from injectors so check injectors.

Disconnect the injector connector. Measure the resistance between terminals. Standard value: 10.5 – 13.5 Ω (at 20°C) If the resistance is out from the standard value, replace the injector.

Exhaust gas

The exhaust has an abnormal odour. Either white or black exhaust gas comes out. The concentration of CO & HC is high. Failed air-fuel ratio control system. Failed ignition system. Failed fuel system. Failed intake and exhaust air system. Improper compression pressure. Deteriorated catalyst. If anything like this you should have a fault code for this problem.


Failure is possibly by failed engine cooling system, cooling fan system, or engine coolant temperature sensor. Insufficient amount or deteriorated quality of engine coolant. Failed cooling fan system. Failed engine coolant temperature sensor. Failed thermostat. Failed water pump. Failed radiator core.

Fuel system failer

When the power supply mode of the electric motor switch ON signal is inputted into the engine-ECU, the engine-ECU turns ON the fuel pump relay. This causes the auxiliary battery voltage to be supplied to the fuel pump.

Failed fuel pump relay in the ETACS-ECU

Failed fuel pump

Open/short circuit or harness damage in fuel pump drive circuit, or loose connector contact.

So hopefully help you with this little help.


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