VOLVO
ECM-970C - Accelerator pedal (AP) position sensor, digital signal. Signal too high
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 higher than expected. The ECM compares the base frequency of the signal with preset values, and if it deviates the code is set. The code gives no noticeable symptoms for the driver.
Possible causes
- Contact resistance or oxidation in the connections between the engine control module 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 on, check the connections at the pedal sensor and the ECM for contact resistance and oxidation
- 2With a multimeter, check that the signal wire from the pedal sensor has no open circuit and is not shorted to ground or supply voltage
- 3If the fault is permanent and nothing is found in the connectors or wiring, a workshop should replace the pedal sensor
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.