OBD-II code · Powertrain (generic)
P0227 Throttle/Pedal Position Sensor/Switch C Circuit Low
Throttle position sensor C signal voltage below 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.
Is it safe to drive with P0227?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire shorted to ground
- Less likelyConnector pins corroded - high contact resistance
- Less likelyHarness chafing through insulation
Symptoms
- Check engine light on
- Reduced throttle response, possible limp mode
- Hesitation or surging
- Idle too high or too low
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–3 h
- Emissions test
- Likely to fail
- Parts involved
- Throttle Position Sensor C, Sensor Wiring
Related codes
- P0224Throttle/Pedal Position Sensor/Switch B Circuit Intermittent
- P0225Throttle/Pedal Position Sensor/Switch C Circuit
- P0226Throttle/Pedal Position Sensor C Circuit Range/Performance
- P0228Throttle/Pedal Position Sensor/Switch C Circuit High
- P0229Throttle/Pedal Position Sensor/Switch C Circuit Intermittent
- P022ACharge Air Cooler Bypass Control A Circuit/Open
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.