Cylinder 4 Exhaust Valve Control Performance
The engine control module has detected a performance fault on the cylinder 4 exhaust valve deactivation system — the actuator response does not match the commanded state.
Affected components
- Cylinder deactivation solenoid
- Lifter
- Oil control valve
Common causes
- High likelihood: Lifter stuck collapsed
- Medium likelihood: Engine oil pressure too low
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.