Throttle/Pedal Position Sensor "C" Circuit High
The "C" channel signal is above the upper threshold — typically a short to positive or an open ground.
Affected components
- Accelerator pedal sensor
- Pedal sensor wiring
Common causes
- High likelihood: Signal shorted to positive
- Medium likelihood: Sensor ground 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.