Throttle/Pedal Position Sensor/Switch "B" Circuit High Input
The B channel voltage is above the upper diagnostic threshold, typically caused by a short to supply voltage or a defective sensor.
Affected components
- Throttle position sensor b
- Tps wiring
Common causes
- High likelihood: TPS B circuit shorted to supply voltage
- Medium likelihood: TPS B element failed
- 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
- 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.