Code result
P2C25
Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Circuit High
Moderate severity
What it means
The position sensor for exhaust heat exchanger bypass valve A reports a circuit high condition. Heat recovery routing cannot be verified reliably.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Signal wire shorted to B+
highOne of the most commonly reported causes for this code — check this first.
Open position sensor
mediumA plausible cause — test and verify before replacing parts.
Connector pins corroded - high contact resistance
lowLess common, but worth ruling out after the more likely causes.
Related help
Get the full diagnosis
Add your vehicle and see step-by-step repair help, recalls, and TSBs in Wrenchify.
Diagnose P2C25 freeNo credit card required