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
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References
sae:J2012