Powertrain
Definition only
Lights the check engine lamp
P2C25: Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Circuit High
Standardized SAE J2012 code · P2Cxx codes
What does P2C25 mean?
The position sensor for exhaust heat exchanger bypass valve A reports a circuit high 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 Signal wire shorted to B+
- Medium Open position sensor
- Low Connector pins corroded - high contact resistance
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2C25 on the same make and model first.
P2C25 in the community
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