Battery Charger Coupler Temperature Sensor A Circuit Low

Where it lives

For P0D9B, the sensor sits on the circuit this code reports. The description of P0D9B reports a fault at the sensor.

Check these first

• A short to ground on the coupler temperature sensor A signal
• A failed coupler temperature sensor reading low
• A corroded or wet connector at the coupler
• High resistance in the sensor return

What to do next

1. Read the coupler temperature sensor A on a scan tool
2. Compare the reading to ambient with the coupler at rest
3. Check the sensor signal for a short to ground
4. Inspect the coupler connector for corrosion and water
5. Replace the coupler temperature sensor if the reading stays low
6. Clear the code and retest

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