P05C5
Engine Coolant Pressure Sensor Circuit High
Generic OBD-II
Common symptoms
What you'll notice
- Check and replace the engine coolant pressure sensor
- Inspect and fix any loose or damaged wiring connections in the coolant pressure sensor circuit
- Verify and fix any issues with the engine coolant level or pressure
- Clean or replace the radiator if necessary
Common causes
Most likely first
- Faulty engine coolant pressure sensor
- Engine coolant level is too low
- Faulty engine coolant temperature sensor
- Faulty engine coolant pressure sensor wiring
- Engine coolant system leakage
How to diagnose & fix
Work through it in order
- Check engine light illuminates on the dashboard
- Engine overheating or running hot
- Erratic or fluctuating engine coolant temperature readings on the gauge
- Loss of engine power or performance
- Difficulty starting the engine when cold
Read & clear P05C5 yourself
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