Throttle/Pedal Position Sensor "C" Circuit Low
The "C" channel signal is below the lower threshold — usually a short to ground or an open signal wire.
Affected components
- Accelerator pedal sensor
- Pedal sensor wiring
Common causes
- High likelihood: Signal shorted to ground
- Medium likelihood: Signal wire open
- Low likelihood: Connector pins corroded - high contact resistance
Possible symptoms
- Check engine light on
- Reduced throttle response, possible limp mode
- Hesitation or surging
- Idle too high or too low
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.