Cylinder Head Temperature Sensor A Circuit

Where it lives

For P017A, the sensor sits on the circuit this code reports. The description of P017A reports a fault at the sensor.

Check these first

• A failed cylinder head temperature sensor A
• A wiring fault on the sensor A circuit
• A corroded sensor A connector
• Low coolant at the cylinder head
• A faulty ECM input

What to do next

1. Read the cylinder head temperature on a scan tool
2. Inspect the sensor A connector and wiring
3. Test the sensor A resistance against spec
4. Replace cylinder head temperature sensor A
5. Check the coolant level
6. Clear the code and retest

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