P2C25Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2C25 is the counterpart of P2C24: the feedback from the position sensor of exhaust heat exchanger bypass flap A sits above the highest value a working sensor can deliver. This usually points to a signal line touching a voltage source, an interrupted sensor ground or an internal sensor fault that pulls the output toward the reference. The check is a pure range test demanded by CARB for comprehensive components and does not judge whether the flap actually moves. No manufacturer documents P2C25 publicly; the nearest cases are Ford's full hybrids, where SSM 52050 fixes P2C22/P2C23 on F-150 PowerBoost trucks with a new muffler inlet pipe, naming the bypass valve as cause. Ford's patent describes estimating the flap state from coolant temperatures instead. Expect a lit MIL and reduced heat recovery.
- What you may notice
- Check engine light
- Cabin heater slow to warm up in winter
- Likely causes
- LikelyPosition signal wire shorted to a voltage source
- PossibleOpen ground circuit of the position sensor
- PossiblePosition sensor in the actuator failed high
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.