OBD-II code · Powertrain (generic, extended)
P2125 Throttle/Pedal Position Sensor "C" Circuit High
The "C" channel signal is above the upper threshold — typically a short to positive or an open ground.
Is it safe to drive with P2125?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySignal shorted to positive
- PossibleSensor ground open
- Less likelyConnector pins corroded - high contact resistance
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
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Accelerator Pedal Sensor, Pedal Sensor Wiring
Related codes
- P2120Throttle/Pedal Position Sensor "C" Circuit
- P2123Throttle/Pedal Position Sensor "D" Circuit High
- P2124Throttle/Pedal Position Sensor "C" Circuit Low
- P2128Throttle/Pedal Position Sensor "E" Circuit High
- P2133Throttle/Pedal Position Sensor "E" Circuit High
- P2122Throttle/Pedal Position Sensor "D" Circuit Low
- P2126Throttle/Pedal Position Sensor "C" Circuit Intermittent
- P2127Throttle/Pedal Position Sensor "E" Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.