Engine Coolant Bypass Valve D Control Circuit / Open
The controller cannot drive the fourth coolant bypass valve.
Affected components
- Coolant bypass valve d
- Solenoid
- Wiring harness
Common causes
- High likelihood: Open coil in bypass valve solenoid
- Medium likelihood: Broken control wire
Diagnostic notes
- The malfunction indicator lamp may illuminate
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.