B Rocker Arm Actuator Control Circuit / Open Bank 1
The controller cannot drive the rocker arm switching actuator B on bank 1. The second valve lift mode cannot be commanded.
Affected components
- Rocker arm actuator b b1
- Oil control valve
- Wiring harness
Common causes
- High likelihood: Open coil in oil control valve
- Medium likelihood: Broken control wire
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.