VOLVO
ECM-P022301 - Throttle/Pedal Position Sensor B Circuit High Input. General Failure Information. General electrical failure
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
5 modelsS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Show models by year and engine (8)
- Volvo S80 (2007–)2007–2009Engine D5244T4, D5244T5 only
- Volvo S80 (2007–)2010–2011Engine D4164T only
- Volvo V70 (2008–)2008–2009Engine D5244T4, D5244T5 only
- Volvo V70 (2008–)2010–2011Engine D4164T only
- Volvo XC60 (2009–)2009All engines except: B6304T2
- Volvo XC70 (2008–)2008All engines except: B6324S
- Volvo XC70 (2008–)2009Engine D5244T4, D5244T5 only
- Volvo XC90 (2003–)2013–2014Engine D5244T18, D5244T5 only
What does this fault code mean?
The engine control module (ECM) receives the accelerator pedal position through two signals that work independently of each other, one analogue and one digital PWM signal. The fault is set when the PWM signal is incorrect, and it is a general electrical fault in the pedal sensor.
Possible causes
- Contact resistance or oxidation in the connectors
- Damaged accelerator pedal position sensor
What you can do
- 1Read the code, clear it and road test to see whether the fault is still active
- 2With a diagnostic tool, compare the two pedal signals in live data; if they disagree, the sensor is the likely cause
- 3Check that the fuses are intact. Fuse locations are shown in the owner's manual
- 4Look at the accelerator pedal connector for oxidation, loose connections and moisture
- 5If the fault remains, have a workshop check the accelerator pedal position sensor with diagnostic equipment
Symptoms you may notice3
- Poor acceleration, the engine feels weak
- The car hesitates, surges or runs jerkily
- Warning symbol and text message in the display
What the fault can affect1
- Engine torque is limited
General guidance for car owners. Diagnosis on the car can point to a different cause.