Hybrid/EV Battery Pack Air Temperature Sensor A Circuit

Where it lives

For P0AAC, the sensor sits on the circuit this code reports. The description of P0AAC reports a fault at the sensor.

Check these first

• A failed battery pack air temperature sensor A
• An open or short in the sensor wiring
• Corrosion or water damage at the sensor
• A battery management system fault

What to do next

1. Read battery pack air temperature sensor A data on a scan tool
2. Inspect the sensor and wiring for corrosion
3. Test the sensor circuit for an open or short
4. Check the battery management system
5. Replace the sensor if the signal is off spec
6. Clear the code and retest

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