Cylinder 4 Deactivation Performance
The engine control module has detected that cylinder 4 deactivation does not perform as expected — the actual cylinder behavior does not match the commanded state.
Affected components
- Cylinder deactivation solenoid
- Lifter
- Oil control valve
Common causes
- High likelihood: Lifter stuck
- Medium likelihood: Deactivation solenoid 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.