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P0115: Engine Coolant Temperature Circuit
Severity: Medium Drive gently and get it diagnosed soon.
What does P0115 mean?
There is a general fault in the engine coolant temperature (ECT) sensor circuit.
Generic OBD-II definition: Engine Coolant Temperature Circuit. Confirm applicability in your vehicle service information.
Common causes
- Faulty coolant temperature sensor
- Damaged wiring or connector
- Low coolant level
Symptoms
- Hard starting
- Poor fuel economy
- Cooling fan running constantly
Can I keep driving with P0115?
Severity: Medium Drive gently and get it diagnosed soon.
If the check engine light is flashing or the car runs badly, stop driving and have it checked.
Typical fixes
- Check coolant level
- Inspect connector
- Test sensor