P01F0
Coolant Temperature Relapsed Below Diagnostic Monitoring Temperature
Generic OBD-II
Common symptoms
What you'll notice
- Check the coolant level and refill if necessary.
- Inspect the thermostat and replace if faulty.
- Check the coolant temperature sensor and replace if faulty.
- Inspect the radiator for any clogs or leaks and repair if necessary.
- Check the water pump and replace if not functioning properly.
Common causes
Most likely first
- Low coolant level
- Faulty coolant temperature sensor
- Thermostat stuck open
- Faulty engine control module (ECM)
- Cooling fan not working properly
How to diagnose & fix
Work through it in order
- Engine overheating
- Loss of power or acceleration
- Increased fuel consumption
- A/C not working properly or blowing warm air
- Engine misfires or stalling
Read & clear P01F0 yourself
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