VOLVO
ECM-P212636 - Throttle/Pedal Position Sensor/Switch E Circuit Range/Performance. FM (Frequency Modulated) / PWM (Pulse Width Modulated) Failures. Signal frequency too low
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
7 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–), XC60 (2009–)
Show models by year and engine (20)
- Volvo S60 (2011–)2011Engine B4164T, B4164T3, B4204T6, B4204T7 only
- Volvo S60 (2011–)2012–2014Engine B4164T, B4164T2, B4164T3, B4204T7 only
- Volvo S60 (2011–)2015Engine B4164T, B4164T2, B4164T3 only
- Volvo S80 (2007–)2010Engine B4204T6 only
- Volvo S80 (2007–)2011Engine B4164T, B4204T6, B4204T7 only
- Volvo S80 (2007–)2012–2014Engine B4164T, B4164T2, B4204T6, B4204T7 only
- Volvo S80 (2007–)2015Engine B4164T only
- Volvo V40 (2013–)2013Engine B4164T, B4164T3 only
- Volvo V40 (2013–)2014–2015Engine B4164T, B4164T3, B4164T4 only
- Volvo V40 Cross Country (2013–)2013–2015Engine B4164T only
- Volvo V60 (2011–)2011Engine B4164T, B4164T3, B4204T6, B4204T7 only
- Volvo V60 (2011–)2012–2014Engine B4164T, B4164T2, B4164T3, B4204T7 only
- Volvo V60 (2011–)2015Engine B4164T, B4164T2, B4164T3 only
- Volvo V70 (2008–)2010Engine B4204T6 only
- Volvo V70 (2008–)2011Engine B4164T, B4204T6, B4204T7 only
- Volvo V70 (2008–)2012–2014Engine B4164T, B4164T2, B4204T7 only
- Volvo V70 (2008–)2015Engine B4164T, B4164T2 only
- Volvo XC60 (2009–)2010Engine B4204T6 only
- Volvo XC60 (2009–)2011–2012Engine B4204T6, B4204T7 only
- Volvo XC60 (2009–)2013–2015Engine B4204T7 only
What does this fault code mean?
The engine control module (ECM) checks the pedal through two sensors: one analogue signal and one pulse width modulated (PWM) signal that goes directly to the ECM. The code is set when the PWM signal from the pedal sensor has a frequency that is too low, meaning the pulses arrive too rarely for the ECM to read the pedal position. The fault may lie in the signal wire, the supply or the sensor itself.
Possible causes
- Open circuit in the signal cable
- Signal cable short-circuited to ground
- Signal cable short-circuited to supply voltage
- Power supply cable short-circuited to ground
- Power supply cable short-circuited to supply voltage
- Damaged accelerator pedal position sensor
What you can do
- 1Check that the fuses are intact; their locations are in the owner's manual or on the fuse box cover
- 2Road test the car to see whether hesitation, surging or jerky running occurs, and whether it happens right now
- 3With a diagnostic tool, read the pedal movement in live data while pressing and releasing the pedal slowly; the values should follow it
- 4Use a multimeter to check that the power supply to the accelerator pedal sensor has no open circuit and is not short-circuited to ground or supply voltage
- 5Check the connectors at the accelerator pedal sensor and the engine control module for contact resistance and oxidation
- 6Replace the accelerator pedal sensor only if these checks show nothing else and the fault remains
Symptoms you may notice2
- The car hesitates, surges or runs jerkily
- The symptoms can appear all the time or only now and then
General guidance for car owners. Diagnosis on the car can point to a different cause.