When Monitored

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

This diagnostic runs when the following conditions are met:

ECT is above 70 °C (158 °F).
Engine speed between 1400 and 2300 rpm.
Vehicle speed between 64 and 96 km/h (40 and 60 mph).
Engine run time greater than three minutes.