P2C22Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- Full hybrids with exhaust heat recovery pass hot exhaust through a coolant heat exchanger after a cold start and divert it around the exchanger with flap A once enough heat has been gathered. A sensor in the flap actuator reports the flap angle to the engine module. P2C22 is the general electrical fault of that feedback: the signal is missing or cannot be read. Ford uses it on its full hybrids. SSM 51921 ties P2C22 with P237C/P237D on the 2022–2023 Maverick 2.5L to water inside the heat exchanger, which is replaced; on 2021–2023 F-150 3.5L PowerBoost trucks SSM 52050 blames the bypass control valve and replaces the muffler inlet pipe, and SSM 53003 supplies an actuator kit. The MIL lights; P2C24/P2C25 name low and high signals, P2C23 an implausible one.
- What you may notice
- Check engine light
- Slower engine warm-up and weaker cabin heating in cold weather
- Engine of the hybrid runs longer before it may shut off
- Likely causes
- LikelyWater intrusion into the heat exchanger or its actuator (Ford Maverick hybrid)
- LikelyFailed bypass valve actuator with integrated position sensor
- PossibleCorroded or loose connector at the actuator under the vehicle
- RareHarness near the exhaust chafed or heat-damaged
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €150 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.