VOLVO
ECM-941D - Accelerator pedal (AP) position sensor, digital signal. Signal too low
System
Engine Control Module (ECM)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
Applies to the following models:
5 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (14)
- Volvo S60 (2001–2009)2005–2006Engine B5204T5, B5244T4, B5244T5, B5254T2, B5254T4 only
- Volvo S60 (2001–2009)2007Engine B5204T5, B5244T5, B5254T2, B5254T4 only
- Volvo S60 (2001–2009)2008–2009Engine B5204T5, B5244T5, B5254T2 only
- Volvo S80 (1999–2006)2005–2006Engine B5204T5, B5244T4, B5254T2, B6294S2, B6294T only
- Volvo V70 (2000–2008)2005Engine B5204T5, B5244T4, B5244T5, B5254T2, B5254T4 only
- Volvo V70 (2000–2008)2006–2007Engine B5204T5, B5244T5, B5254T2, B5254T4 only
- Volvo V70 (2000–2008)2008Engine B5254T2 only
- Volvo V70 XC / XC70 (2001–2007)2005All engines except: D5244T
- Volvo V70 XC / XC70 (2001–2007)2006Engine B5244T4, B5254T2 only
- Volvo V70 XC / XC70 (2001–2007)2007Engine B5254T2 only
- Volvo XC90 (2003–)2005–2006Engine B5254T2, B6294T only
- Volvo XC90 (2003–)2007–2012Engine B5254T2 only
- Volvo XC90 (2003–)2013–2014Engine B5254T9 only
- Volvo XC90 (2003–)2015
What does this fault code mean?
The ECM notices a problem with the digital signal of the accelerator pedal sensor, which reads too low. The fault may lie in the connections between the sensor and the ECM, in a signal wire shorted to ground, or in the sensor. The accelerator pedal can then be disabled when the brake is pressed.
Possible causes
- Contact resistance or oxidation at the connections between the ECM and the sensor
- Open circuit, or short to ground, in the signal wire
- Damaged accelerator pedal sensor
What you can do
- 1Start the engine and read the accelerator pedal movement in live data. The value should follow the pedal as it is pressed and released
- 2Check the connections between the accelerator pedal sensor and the ECM: are they secure, and is there contact resistance or oxidation
- 3With a diagnostic tool, check the accelerator value in live data while the pedal is pressed slowly and released. It should follow the pedal
- 4Check that the fuses are intact. Their locations are in the handbook or on the fuse box cover
- 5If nothing is found and the fault is permanent, a workshop should replace the sensor. The accelerator can be disabled when braking, so do not drive with the fault
Symptoms you may notice1
- Poor accelerator pedal response
What the fault can affect1
- The accelerator pedal is disabled when the brake is pressed
General guidance for car owners. Diagnosis on the car can point to a different cause.