A Rocker Arm Actuator Position Sensor Circuit High Bank 1

Where it lives

For P264D, the circuit described runs through the sensor. The description of P264D puts it on bank 1.

Check these first

• Position sensor A signal wire shorted to voltage on bank 1
• Failed rocker arm actuator A position sensor
• Corroded sensor connector
• Rocker arm actuator A seized on bank 1
• Wrong oil viscosity or dirty oil

What to do next

1. Read rocker arm actuator A position live data on bank 1
2. Test the bank 1 position sensor wire for a short to voltage
3. Inspect the bank 1 sensor connector
4. Command the bank 1 rocker arm actuator A through its range
5. Check oil level and viscosity
6. Clear the code and retest

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