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.
The position sensor for exhaust heat exchanger bypass valve A reports a performance condition. Heat recovery routing cannot be verified reliably.
Common causes
- high
Sensor offset drifted
One of the most commonly reported causes for this code — check this first.
Typical part cost: $170-880
- medium
Linkage between sensor and valve worn
A plausible cause — test and verify before replacing parts.
Typical part cost: $170-880
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P2C23 mean?
P2C23 means "Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Performance". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P2C23?
sensor offset drifted; linkage between sensor and valve worn; sensor element aged beyond calibration window — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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