VOLVO
ECM-P212732 - Throttle/Pedal Position Sensor/Switch E Circuit Low. FM (Frequency Modulated) / PWM (Pulse Width Modulated) Failures. Signal low time below minimum
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 code is set when the pulse width modulated (PWM) signal from the accelerator pedal sensor has too low a frequency. The engine control module (ECM) compares the PWM signal with the analogue signal, and the two should follow each other as the pedal moves. 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
- 2Make a test drive and note whether hesitation, surging or jerky running occurs, and whether it happens right now
- 3Start the engine and read the pedal movement in live data while pressing the pedal slowly and releasing it; the values should change with the movement
- 4Use a multimeter to check that the supply to the pedal sensor has no open circuit and is not short-circuited to ground or supply voltage
- 5Check the connectors at the pedal sensor and the engine control module for contact resistance and oxidation
- 6Replace the pedal sensor first only if the fault remains and nothing else is found during these checks
Symptoms you may notice3
- Yellow warning symbol and a message in the display
- The car lacks power
- The engine hesitates, surges or runs jerkily
General guidance for car owners. Diagnosis on the car can point to a different cause.