Cylinder 8 Exhaust Valve Control Circuit Low
The engine control module has detected a low-side voltage fault (short to ground) on the cylinder 8 exhaust valve deactivation solenoid circuit. Cylinder deactivation is disabled while the fault is present.
Affected components
- Cylinder deactivation solenoid
- Engine wiring harness
- Ecm
Common causes
- High likelihood: Wiring shorted to ground
- Medium likelihood: Solenoid internal short
- Low likelihood: Connector pins corroded - high contact resistance
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.