Powertrain
generic / SAE
P008F
Engine Coolant Temperature/Fuel Temperature Correlation
Engine coolant temperature and fuel temperature readings are inconsistent — at long soak both should be near ambient and converge under load. One sensor has drifted.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number– / 8F
Possible causes
- One temperature sensor reading drifted high
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
- Estimated cost: 40–250 €
- Estimated time: 0.3–1.5 h
- Component: coolant temp sensor
- Component: fuel temp sensor
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012