Conditions for Setting the DTC

WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.

The ECM determines that the modeled ECT has met the calibrated target of 79° C (174 °F) and the measured ECT is less than 53° C (127° F) and the start-up ambient temperature is between 10° and 52° C (50° and 126° F), for greater than 1 s.
OR
The ECM determines that the modeled ECT has met the calibrated target of 59° C (138 °F) and the measured ECT is less than 13° C (55° F) and the start-up ambient temperature is between -7° and 10° C (19° and 50° F), for greater than 1 s.