Powertrain
generic / SAE
P00B6
Radiator Coolant Temperature/Engine Coolant Temperature Correlation
Difference between radiator outlet and engine coolant temperatures is implausible — typically indicates a stuck thermostat.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number– / B6
Possible causes
- Thermostat stuck open (slow warm-up) 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: medium
- DIY: possible
- Estimated cost: 60–400 €
- Estimated time: 0.5–3 h
- Component: thermostat
- Component: radiator coolant temp sensor
- Component: engine coolant temp sensor
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012