Engine Coolant Pressure Sensor Circuit

Where it lives

For P05C2, the circuit described runs through the sensor. The description of P05C2 reports a fault at the sensor.

Check these first

• A failed engine coolant pressure sensor
• Damaged sensor wiring
• A corroded sensor connector
• A cooling system pressure fault
• An incorrect sensor installed

What to do next

1. Read coolant pressure on a scan tool
2. Compare it against a gauge on the system
3. Inspect the sensor wiring and connector
4. Check for coolant leaks or air pockets
5. Replace the sensor if the reading is wrong
6. Clear the code and retest

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