P01E5
Engine Coolant Temperature Sensor 3 Circuit Low
Generic OBD-II
Common symptoms
What you'll notice
- Check the wiring and connections of the Engine Coolant Temperature Sensor.
- Inspect and replace the Engine Coolant Temperature Sensor.
- Verify and repair any vacuum leaks in the cooling system.
- Flush and replace the engine coolant.
- Check and repair any issues with the engine's cooling system components (e.g. radiator, thermostat).
Common causes
Most likely first
- Faulty Engine Coolant Temperature Sensor
- Low engine coolant level
- Faulty thermostat
- Wiring or connection issue with the Engine Coolant Temperature Sensor
- Faulty Engine Control Module (ECM)
How to diagnose & fix
Work through it in order
- Engine overheating
- Poor fuel economy
- Rough idle
- Difficulty starting the engine
- Check Engine Light illuminated
Read & clear P01E5 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.