When Monitored

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

This diagnostic runs when the following conditions are met:

Engine run time above 20 seconds.
Engine coolant temperature at startup between -7°C (19.4°F) and 10°C (50°F).
The difference between the Ambient Air temp (AAT) and Engine Coolant Temp (ECT) temp at Start is equal to or less than 10°C (50°F).
Vehicle speed is below two mph.