Powertrain
generic / SAE
P2121
Throttle/Pedal Position Sensor "C" Range/Performance
The "C" channel of the throttle or pedal sensor produces an electrically valid signal that does not match the other channels or the operating point.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number1 / 21
Possible causes
- Sensor track C worn high
- Correlation with tracks A/B lost medium
- Sensor element aged beyond calibration window low
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
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012