Powertrain
generic / SAE
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.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number1 / 19
Possible causes
- ECT connector loose or corroded high
- Sensor fails when warm medium
- Wiring chafed near hot engine parts medium
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
Inspection / repair
- Difficulty: easy
- DIY: possible
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References
sae:J2012