Battery Charger Coupler Temperature Sensor A Circuit Intermittent/Erratic

Where it lives

For P0D9D, the sensor sits on the circuit this code reports. The description of P0D9D reports a fault at the sensor.

Check these first

• A loose or backed-out pin in the coupler temperature sensor connector
• A sensor with an intermittent internal connection
• Vibration rubbing the sensor wiring in the coupler harness
• Moisture in the connector making the signal jump

What to do next

1. Watch the coupler temperature sensor while wiggling the connector
2. Inspect the connector for loose pins and corrosion
3. Check the sensor wiring for rubs and chafing
4. Compare the reading to ambient after a soak
5. Replace the coupler temperature sensor if the signal stays erratic
6. Clear the code and retest

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