Hybrid/EV Battery Pack Coolant Temperature Sensor A Circuit Low

Where it lives

For P0C44, the sensor sits on the circuit this code reports. The description of P0C44 reports a fault at the sensor.

Check these first

• Coolant temperature sensor A reporting below the true pack temperature
• A short to ground in the sensor A signal wire
• Coolant in the sensor A connector tracking the signal low
• A low pack coolant level letting sensor A read air instead of liquid
• Sensor A failed with a low resistance element

What to do next

1. Read battery pack coolant temperature live data and compare it to ambient
2. Check the sensor A signal wire for a short to ground
3. Inspect the sensor A connector for coolant intrusion
4. Check the pack coolant level and look for leaks
5. Replace coolant temperature sensor A if it reads low cold
6. Clear the code and retest

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