Diesel Intake Air Flow A Position Sensor Circuit High

Where it lives

For P02E9, the circuit described runs through the sensor. The description of P02E9 reports a fault at the sensor.

Check these first

• A short to power in the sensor circuit
• A failed flap position sensor
• Water or corrosion in the sensor connector
• Incorrect flap actuator adjustment
• A faulty ECM input

What to do next

1. Read the flap position sensor on a scan tool
2. Check the sensor circuit for a short to power
3. Inspect the connector for water or corrosion
4. Verify the flap actuator adjustment
5. Replace the position sensor if the signal stays high
6. Clear the code and retest

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