Cylinder Head Temperature Sensor A Circuit Low

Where it lives

For P017C, the sensor sits on the circuit this code reports. The description of P017C reports a fault at the sensor.

Check these first

• A short to ground in the CHT sensor A signal wire
• A CHT sensor A element shorted internally
• Water in the CHT sensor A connector
• A pinched or chafed CHT sensor A harness
• Low battery voltage pulling sensor references down

What to do next

1. Check battery and charging voltage first
2. Disconnect CHT sensor A and check the signal wire for a short to ground
3. Inspect the CHT sensor A connector for water or corrosion
4. Check the CHT sensor A harness for pinches
5. Replace CHT sensor A if the wiring tests good
6. Clear the code and retest

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