Hybrid/EV Battery Pack Air Temperature Sensor B Circuit

Where it lives

For P0AB1, the circuit described runs through the sensor. The description of P0AB1 reports a fault at the sensor.

Check these first

• A failed battery pack air temperature sensor B
• Wiring damage in the sensor B circuit
• Corrosion or water damage at the sensor B connector
• A short or open in the sensor B circuit

What to do next

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

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