Hybrid/EV Battery Temperature Sensor C Circuit High

Where it lives

For P0ACD, the circuit described runs through the sensor. The description of P0ACD reports a fault at the sensor.

Check these first

• An open in the battery temperature sensor C signal wire
• A failed battery temperature sensor C
• A poor ground at the sensor C circuit
• An overheating battery pack from a blocked cooling path
• A loose or corroded sensor C connector

What to do next

1. Read battery temperature sensor C on live data
2. Compare sensor C with the other battery temperature sensors
3. Inspect the sensor C connector and wiring for an open
4. Check the battery cooling fan and ducts for blockages
5. Replace battery temperature sensor C if the reading stays high
6. Clear the code and retest

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