Motor Electronics Coolant Temperature Sensor A Circuit High

Where it lives

For P0A03, the circuit described runs through the sensor. The description of P0A03 reports a fault at the sensor.

Check these first

• A short to power in the motor electronics coolant temperature sensor A circuit
• An open in the sensor A ground
• A sensor A that reads high or open
• High resistance in the sensor A circuit

What to do next

1. Read motor electronics coolant temperature sensor A voltage on a scan tool
2. Check the circuit for a short to power
3. Test the sensor A ground
4. Measure sensor A resistance
5. Replace the sensor if the reading is fixed high
6. Clear the code and retest

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