Conditions for Setting the DTC

The ECM detects that the minimum ECT of 55°C (131°F) has not been met with a start-up IAT of colder than 10°C (50°F).
OR
The ECM detects that the minimum ECT of 80°C (176°F) has not been met with a start-up IAT of warmer than 10°C (50°F).