Motor Electronics Coolant Temperature Sensor A Circuit Intermittent

Where it lives

For P0A04, the sensor sits on the circuit this code reports. The description of P0A04 reports a fault at the sensor.

Check these first

• A motor electronics coolant temperature sensor A connector losing contact
• Chafed wiring in the sensor A harness
• Air in the cooling system
• Low coolant level
• A sensor A that fails when hot

What to do next

1. Road test and watch sensor A data
2. Wiggle test the sensor A connector and harness
3. Bleed the cooling system
4. Check the coolant level
5. Replace the sensor if the signal drops
6. Clear the code and retest

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