Throttle/Pedal Position Sensor/Switch A/G Voltage Correlation
The voltage signals of throttle/pedal position channels A and G do not correlate within the calibrated tolerance. One sensor element drifted or harness shows offset between channels.
Affected components
- Tps channel a
- Tps channel g
- Ecm
Common causes
- High likelihood: Sensor channel A or G drifted
- Medium likelihood: Harness offset between channels
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
- Reduced-power or limp mode may occur
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.