VOLVO
ECM-P00C000 - Turbocharger/Supercharger Bypass Valve "B" Control Circuit. General Failure Information. No sub type information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
8 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (8)
- Volvo S60 (2011–)2014–2015Engine B4204T10, B4204T11, B4204T12, B4204T15, B4204T9 only
- Volvo S80 (2007–)2014–2015Engine B4204T11, B4204T12, B4204T15 only
- Volvo V40 (2013–)2015Engine B4204T11 only
- Volvo V40 Cross Country (2013–)2015Engine B4204T11 only
- Volvo V60 (2011–)2014–2015Engine B4204T11, B4204T12, B4204T15, B4204T9 only
- Volvo V70 (2008–)2014–2015Engine B4204T11 only
- Volvo XC60 (2009–)2014–2015Engine B4204T10, B4204T11, B4204T12, B4204T15, B4204T9 only
- Volvo XC70 (2008–)2014–2015Engine B4204T11 only
What does this fault code mean?
The ECM watches the voltage supplied to the bypass valve that controls the boost compressor. The code is stored when the signal from the valve is incorrect, and While the fault is active the compressor is switched off, which causes a clear loss of performance.
Possible causes
- Signal wire shorted to ground
- Signal wire shorted to supply voltage
- Contact resistance or corrosion in the connections
- Open circuit in the signal or ground wire
What you can do
- 1Read and note the code, clear it and road test to see whether it returns
- 2Check the connector at the bypass valve: it should be fully engaged, free from corrosion and moisture, and undamaged
- 3Look for chafed, pinched or loose wiring running from the valve to the engine control module
- 4If you have diagnostic equipment, activate the bypass valve and check that it moves
- 5With a multimeter, check that the signal wire has no open circuit and is not shorted to ground or supply voltage
- 6If the fault remains, have a workshop check the valve and its control
Symptoms you may notice3
- Engine warning lamp (check engine) lit or behaving abnormally
- The engine lacks power and runs poorly
- Text message in the display
What the fault can affect2
- The boost compressor is switched off
- Engine performance is reduced
General guidance for car owners. Diagnosis on the car can point to a different cause.