VOLVO
ECM-P212221 - Throttle/Pedal Position Sensor/Switch D Circuit Low. General Signal Failures. Signal 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 compares the accelerator pedal position from two independent signals, an analogue signal over CAN and a PWM signal. The code is set when the analogue signal is too low. The cause may be a signal wire shorted to ground or to another circuit, or a damaged pedal sensor.
Possible causes
- The signal wire is short-circuited to ground
- A wire is short-circuited to another circuit
- Damaged accelerator pedal position sensor
What you can do
- 1Check whether other CAN-related fault codes are stored in the control module, for example ECM-U012088, ECM-U000188, ECM-U1A1400, ECM-U000108 or ECM-U000100. If so, fault-trace those first
- 2This code can point to a problem in the CEM. In that case, look for the cause there
- 3Check the connectors at the pedal sensor and the engine control module for contact resistance and oxidation
- 4If you have a diagnostic tool, read the pedal position in live data while slowly pressing and releasing the pedal, and check that the values follow each other
- 5If the fault remains, have a workshop with diagnostic equipment decide whether the pedal sensor needs replacing
Symptoms you may notice3
- A text message and a warning symbol appear in the display
- The engine lacks power and performs poorly
- The engine hesitates or surges, and it is unclear when
General guidance for car owners. Diagnosis on the car can point to a different cause.