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P0117: Engine Coolant Temperature Circuit Low
Severity: Medium Drive gently and get it diagnosed soon.
What does P0117 mean?
The ECT sensor signal voltage is too low (the computer may think the engine is extremely hot).
Generic OBD-II definition: Engine Coolant Temperature Circuit Low. Confirm applicability in your vehicle service information.
Common causes
- Shorted sensor
- Shorted wiring
Symptoms
- Cooling fans running constantly
- Rough running
Can I keep driving with P0117?
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
- Inspect wiring for shorts
- Replace sensor