Powertrain
generic / SAE
P2120
Throttle/Pedal Position Sensor "C" Circuit
A general electrical fault on the "C" channel of the throttle or pedal position sensor. Drive-by-wire pedals carry two or three redundant tracks; "C" is the third channel.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number1 / 20
Possible causes
- Pedal sensor track C failed high
- Signal wire open medium
Symptoms
- Check engine light on
- Reduced throttle response, possible limp mode
- Hesitation or surging
- Idle too high or too low
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 80–400 €
- Estimated time: 0.3–1.5 h
- Component: accelerator pedal sensor
- Component: pedal sensor wiring
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012