A Rocker Arm Actuator Position Sensor Circuit Bank 1
The position sensor that confirms the A rocker arm switching state on bank 1 returns no usable signal. Closed-loop control of valve lift cannot verify the state.
Affected components
- Rocker arm position sensor a b1
- Wiring harness
Common causes
- High likelihood: Open sensor element
- Medium likelihood: Corroded sensor connector
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.