OBD-II code · Powertrain (generic)
P0119 Engine Coolant Temperature Sensor Circuit Intermittent
The ECU detects intermittent signal dropouts on the engine coolant temperature (ECT) sensor circuit. Fault not constantly present, typically due to loose connector, chafed wiring or a sensor failing thermally.
Is it safe to drive with P0119?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyECT connector loose or corroded
- PossibleSensor fails when warm
- PossibleWiring chafed near hot engine parts
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 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Ect Sensor, Ect Connector, Ect Wiring
Related codes
- P0116Engine Coolant Temperature Sensor Range/Performance
- P0117Engine Coolant Temperature Sensor Low Input
- P0118Engine Coolant Temperature Sensor High Input
- P011AEngine Coolant Temperature Sensor 1/2 Correlation
- P011BEngine Coolant Temperature/Intake Air Temperature Correlation
- P011CCharge Air Cooler Temperature/Intake Air Temperature Correlation Bank 1
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.