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.
General code reference. Confirm the definition and diagnostic procedure for your vehicle's year, model and engine. A stored code alone does not identify a failed part.
Affected components
- Exhaust heat exchanger bypass valve a pos sensor
- Wiring harness
- Ecm
Possible causes to check
These are possible checks, not a ranked diagnosis. Follow the vehicle manufacturer's test procedure before replacing parts.
- Sensor offset drifted
- Linkage between sensor and valve worn
- Sensor element aged beyond calibration window
Diagnostic notes
- The malfunction indicator lamp may illuminate
Sources
Check each reference's vehicle and model-year scope. General background links do not establish which fault is most likely on your vehicle.
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.