Theory Of Operation
WARNING: This page is about a different car, the 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.
The engine control system uses many methods to achieve stable idle speed (RPM), and is capable of compensating for unexpected changes in load (accessory devices switching on, etc.). In the event that the engine is incapable of steadily maintaining the desired idle speed, either due to overshooting this target, undershooting, or "hunting", this DTC may be set.