Powertrain
generic / SAE
P2137
Throttle/Pedal Position Sensor B/C Voltage Correlation
The "B" and "C" channels of the throttle or pedal sensor disagree beyond tolerance — the ECU cannot trust either signal and reverts to limp-home.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number1 / 37
Possible causes
- Track B or C worn high
- Connector corroded with leakage 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
- limp mode possible
Sources
References
sae:J2012