OBD-II code · Powertrain (generic, extended)
P2C23 Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Performance
The position sensor for exhaust heat exchanger bypass valve A reports a performance condition. Heat recovery routing cannot be verified reliably.
Is it safe to drive with P2C23?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor offset drifted
- PossibleLinkage between sensor and valve worn
- Less likelySensor element aged beyond calibration window
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Exhaust Heat Exchanger Bypass Valve A Pos Sensor, Wiring Harness, Ecm
Related codes
- P2C20Cold Start Fuel Pressure Regulator A Exceeded Control Limits - Pressure Too High
- P2C21Engine Oil Temperature Sensor A/B Correlation
- P2C22Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Circuit
- P2C24Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Circuit Low
- P2C25Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Circuit High
- P2C26Fuel Injector Group B Supply Sense Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.