Set Condition
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.
The Powertrain Control Module (PCM) detects that the engine has been operated for an extended period of time with critical Selective Catalytic Reduction (SCR) faults active, and no repair action has been taken. This amount of time will vary, depending on which SCR faults are active.