VOLVO
ECM-P252800 - Vacuum Reservoir Pressure Sensor 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 monitors the brake vacuum sensor reading, which sits in the power brake booster. The code is stored when the reading stays too high for a period. Possible causes are a signal wire shorted to supply voltage or a damaged sensor.
Possible causes
- Signal wire short-circuited to supply voltage
- Damaged brake vacuum sensor
What you can do
- 1If you have a diagnostic tool, read the brake vacuum sensor value in live data with the engine running and see whether it is unusually high
- 2Check that the relevant fuses are intact
- 3Check the connector at the brake vacuum sensor for contact resistance and oxidation
- 4Use a multimeter to check that the signal wire to the brake vacuum sensor is not short-circuited to plus
- 5If the fault remains, have a workshop check the brake vacuum sensor, since it sits in the brake booster, which is part of the braking system
Symptoms you may notice1
- No noticeable symptoms for the driver
What the fault can affect1
- The automatic engine start/stop function is switched off
General guidance for car owners. Diagnosis on the car can point to a different cause.