B Rocker Arm Actuator Control Circuit Low Bank 1
Voltage on the rocker arm actuator B control line on bank 1 is below the expected window. Usually a short to ground or a shorted solenoid coil.
Affected components
- Rocker arm actuator b b1
- Oil control valve
- Wiring harness
Common causes
- High likelihood: Control wire shorted to ground
- Medium likelihood: Internal short in solenoid coil
- Low likelihood: Connector pins corroded - high contact resistance
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.