Powertrain
generic / SAE
P01F0
Coolant Temperature Relapsed Below Diagnostic Monitoring Temperature
Coolant temperature dropped below the diagnostic monitoring threshold after warm-up. Often thermostat stuck open or stuck-open coolant heater bypass.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number1 / F0
Possible causes
- Thermostat stuck open high
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 60–400 €
- Estimated time: 0.5–3 h
- Component: thermostat
- Component: coolant circuit
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012