Cylinder Deactivation Solenoid Bank 1 Control Circuit Open
The engine control module has detected an open circuit at the bank 1 cylinder deactivation solenoid. The solenoid routes oil pressure to the switching lifters; an open circuit prevents activation and the system disables deactivation requests on bank 1.
Affected components
- Cylinder deactivation solenoid
- Engine wiring harness
- Ecm
Common causes
- High likelihood: Solenoid coil open
- Medium likelihood: Wiring or connector open
- Low likelihood: ECM driver failed
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
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.