When Monitored

WARNING: This page is about a different car, the 2019 RAM 3500 HD and 2019 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

This diagnostic runs continuously when the following conditions are met:

With the ignition on.
There is a minimum 10°C (18°F) coolant temperature drop between ignition cycles.
Coolant temperature is greater than or equal to 76.6°C (169.88°F).