VOLVO
ECM-P212139 - Throttle/Pedal Position Sensor/Switch D Circuit Range/Performance. FM (Frequency Modulated) / PWM (Pulse Width Modulated) Failures. Incorrect has too few pulses
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
3 modelsS60 (2011–), S80 (2007–), V70 (2008–)
Show models by year and engine (9)
- Volvo S60 (2011–)2011–2012Engine B5254T5 only
- Volvo S80 (2007–)2007–2008Engine B5254T6 only
- Volvo S80 (2007–)2009Engine B5254T6, B5254T8 only
- Volvo S80 (2007–)2010–2011Engine B5254T10, B5254T11, B5254T8 only
- Volvo S80 (2007–)2012Engine B5254T10 only
- Volvo V70 (2008–)2008Engine B5254T6 only
- Volvo V70 (2008–)2009Engine B5254T6, B5254T8 only
- Volvo V70 (2008–)2010–2011Engine B5254T10, B5254T11 only
- Volvo V70 (2008–)2012Engine B5254T10 only
What does this fault code mean?
The engine control module has registered that the accelerator pedal sensor's PWM signal carries too few pulses, so the basic frequency does not match the expected values. The cause may be a contact problem, a break or short in the signal wire, or a faulty sensor.
Possible causes
- Contact resistance or oxidation in the connections between the control module and the pedal sensor
- Signal wire broken, or shorted to ground or supply
- Damaged accelerator pedal sensor
What you can do
- 1Check that the fuses are intact
- 2Read the code with the ignition on and note it down
- 3Look at the connectors at the pedal sensor and the control module and check that they are firmly seated
- 4Use a multimeter to check that the signal wire to the pedal sensor is not shorted to ground or supply voltage and has no break
- 5If the fault remains, have a workshop with diagnostic equipment decide whether the pedal sensor needs replacing
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.