VOLVO
ECM-P252A1C - Engine Oil Quality Sensor Circuit. General Electrical Failures. Circuit voltage out of range
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
5 modelsS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Show models by year and engine (6)
- Volvo S80 (2007–)2007–2009Engine D5244T4, D5244T5 only
- Volvo V70 (2008–)2008–2009Engine D5244T4, D5244T5 only
- Volvo XC60 (2009–)2009All engines except: B6304T2
- Volvo XC70 (2008–)2008All engines except: B6324S
- Volvo XC70 (2008–)2009Engine D5244T4, D5244T5 only
- Volvo XC90 (2003–)2013–2014Engine D5244T18, D5244T5 only
What does this fault code mean?
The code concerns an incorrect PWM signal from the combined sensor for oil quality, level and temperature, even though the name refers to a voltage out of range. Contact faults, an intermittent break in the signal wire or a damaged sensor may lie behind it.
Possible causes
- Supply open or shorted to voltage, or the signal wire is (see ECM-P252A17)
- Contact resistance or oxidation in the connections
- Intermittent open circuit in the signal wire
- Damaged oil level sensor
- Voltage supply short-circuited to ground (see ECM-P252A16)
- Signal wire short-circuited to ground (see ECM-P252A16)
What you can do
- 1Read the fault status with the ignition on and see whether the fault is still active
- 2Check that the relevant fuses are intact
- 3Check the connector to the combined sensor and make sure it is secure and clean
- 4Because the break may be intermittent, read the fault status again after the connectors have been checked
- 5If the fault remains after these checks, have a workshop with diagnostic equipment check the combined sensor
Symptoms you may notice1
- No noticeable symptoms for the driver
General guidance for car owners. Diagnosis on the car can point to a different cause.