Powertrain
generic / SAE
P0228
Throttle/Pedal Position Sensor/Switch C Circuit High
Throttle position sensor C signal voltage above expected range. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number2 / 28
Possible causes
- Signal wire open high
- Connector pins corroded - high contact resistance low
- Supply wire pinched against B+ source low
Symptoms
- Check engine light on
- Reduced throttle response, possible limp mode
- Hesitation or surging
- Idle too high or too low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–600 €
- Estimated time: 0.5–3 h
- Component: throttle position sensor c
- Component: sensor wiring
- MIL / check engine light
- emissions-relevant
- limp mode possible
Sources
References
sae:J2012