Exhaust Camshaft Actuator Park Lock Control Circuit / Open Bank 2
The controller cannot drive the park-lock pin that secures the exhaust camshaft phaser on bank 2 in its base position at engine off. Without the lock, the next start can suffer poor combustion or rough idle until the phaser builds oil pressure.
Affected components
- Exhaust cam phaser b2
- Park lock solenoid
- Wiring harness
Common causes
- High likelihood: Open coil in the park-lock solenoid
- Medium likelihood: Broken control wire between ECU and solenoid
Possible symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
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.