OBD-II code · Powertrain (generic)
P01E3 Engine Coolant Temperature Sensor 3 Circuit
Generic electrical fault on engine coolant temperature sensor 3 (third measurement location, e.g. radiator outlet or heater core).
Is it safe to drive with P01E3?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor failed
Symptoms
- Check engine light on
- Cooling fan runs constantly or not at all
- Cabin heater weak or excessively hot
- Possible long warm-up time or hard cold start
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Ect Sensor 3, Sensor Wiring
Related codes
- P2182Engine Coolant Temperature Sensor 2 Circuit
- P2AFCEngine Coolant Temperature Sensor 4 Circuit
- P2B2BEngine Coolant Temperature Sensor 5 Circuit
- P2BB6Engine Coolant Temperature Sensor 6 Circuit
- P01E0Cylinder 11 Injection Timing Performance - Over Advanced
- P01E1Cylinder 12 Injection Timing Performance - Over Retarded
- P01E2Cylinder 12 Injection Timing Performance - Over Advanced
- P01E4Engine Coolant Temperature Sensor 3 Circuit Range/Performance
- P01E5Engine Coolant Temperature Sensor 3 Circuit Low
- P01E6Engine Coolant Temperature Sensor 3 Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.