Powertrain
Definition only
Lights the check engine lamp
P2C23: Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Performance
Standardized SAE J2012 code · P2Cxx codes
What does P2C23 mean?
The position sensor for exhaust heat exchanger bypass valve A reports a performance condition. Heat recovery routing cannot be verified reliably.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Sensor offset drifted
- Medium Linkage between sensor and valve worn
- Low Sensor element aged beyond calibration window
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2C23 on the same make and model first.
P2C23 in the community
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