Conditions For Setting DTC
- Engine coolant temperature is less than 20°F (-7°C) at engine start up.
- ECT sensor value is 68°F (20°C) or less after engine has been running for 20 minutes or more.
Or
- Engine coolant temperature is 20-50°F (-7 to 10°C) at engine start up.
- ECT sensor value is 68°F (20°C) or less after engine has been running for 5 minutes or more.