VOLVO
ECM-970D - Accelerator pedal (AP) position sensor, digital signal. Signal too low
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Show models by year and engine (9)
- Volvo C30 (2007–2013)2007Engine B5254T3 only
- Volvo C30 (2007–2013)2008–2013Engine B5254T7 only
- Volvo C70 (2006–2013)2006–2007Engine B5254T3 only
- Volvo C70 (2006–2013)2008–2013Engine B5254T7 only
- Volvo S40 (2004–2013)2005–2007Engine B5254T3 only
- Volvo S40 (2004–2013)2008Engine B5254T3, B5254T7 only
- Volvo S40 (2004–2013)2009–2012Engine B5254T7 only
- Volvo V50 (2004–2013)2005–2007Engine B5254T3 only
- Volvo V50 (2004–2013)2008–2012Engine B5254T7 only
What does this fault code mean?
The code indicates that the digital signal from the accelerator pedal sensor is lower than expected. The engine control module (ECM) monitors the base frequency of the signal, and when it deviates from the preset values the code is stored. The code gives no noticeable symptoms for the driver.
Possible causes
- Contact resistance or oxidation in the connections between the ECM and the pedal sensor
- Open circuit, or short to ground or supply voltage, on the signal wire
- Damaged accelerator pedal position sensor
What you can do
- 1With the ignition off, check the connectors at the pedal sensor and the ECM for contact resistance and oxidation
- 2With a multimeter, check that the signal wire is intact and not shorted to ground or supply voltage
- 3If nothing is found and the fault stays permanent, the pedal sensor may need replacing, which a workshop should do
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.