Throttle/Pedal Position Sensor C Circuit Range/Performance
Throttle position sensor C signal is not tracking the other channels of the redundant TPS within tolerance. The ECU compares all three channels and detects rationality failure.
Affected components
- Throttle position sensor
- Throttle body
Common causes
- High likelihood: TPS contact aging
- Medium likelihood: Dirty or sticking throttle plate
- Low likelihood: Sensor element aged beyond calibration window
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
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.