VOLVO
ECM-P055D00 - Engine Oil Pressure Sensor/Switch "B" Circuit High. 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, D4204T5 only
- Volvo S80 (2007–)2014–2015Engine B4204T11, B4204T12, B4204T15, D4204T5 only
- Volvo V40 (2013–)2015Engine B4204T11, D4204T14 only
- Volvo V40 Cross Country (2013–)2015Engine B4204T11, D4204T14 only
- Volvo V60 (2011–)2014–2015Engine B4204T11, B4204T12, B4204T15, B4204T9, D4204T5 only
- Volvo V70 (2008–)2014–2015Engine B4204T11, D4204T5 only
- Volvo XC60 (2009–)2014–2015Engine B4204T10, B4204T11, B4204T12, B4204T15, B4204T9, D4204T5 only
- Volvo XC70 (2008–)2014–2015Engine B4204T11, D4204T5 only
What does this fault code mean?
The ECM reads oil pressure through the combined oil pressure and oil temperature sensor. The fault is stored when the signal from the oil pressure sensor is too high while the engine is running. The module then uses a fixed oil pressure value instead of the measured one.
Possible causes
- The signal wire is shorted to supply voltage
- The combined oil pressure and oil temperature sensor is damaged
What you can do
- 1Check that the fuses are intact
- 2Look for chafed wiring from the sensor that may have touched a live supply part
- 3Use a multimeter to check that the signal wire from the sensor has no voltage when the ignition is off
- 4If you have diagnostic equipment: read the oil pressure in live data with the engine running and see whether the value sits at an unrealistically high level
- 5If the wiring and connector are sound, have a workshop check the combined sensor
Symptoms you may notice1
- No noticeable symptoms for the driver
What the fault can affect1
- The control module uses a fixed oil pressure instead of the measured value
General guidance for car owners. Diagnosis on the car can point to a different cause.