Exhaust Heat Exchanger Bypass Valve A Control Circuit Open
Exhaust Heat Exchanger Bypass Valve A Control Circuit Open: the control circuit is open. Likely a broken wire, disconnected connector, or failed actuator.
Affected components
- Exhaust heat exchanger
- Exhaust bypass valve a
- Exhaust heat recovery actuator
Common causes
- High likelihood: Open in harness or connector
- Medium likelihood: Actuator solenoid or motor winding open
- Low likelihood: Pin pushed back out of connector body
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
Related codes
Sources
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.