A Rocker Arm Actuator Position Sensor Circuit Low Bank 1
The position sensor signal is below the lower diagnostic threshold. Usually a shorted sensor or short to ground in the harness.
Affected components
- Rocker arm position sensor a b1
- Wiring harness
Common causes
- High likelihood: Internal short in sensor element
- Medium likelihood: Signal wire shorted to ground
- 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.