Ram 1500 engine turns to ACC instead of shutting off completely on Ram 1500

Some Ram 1500 owners report experiencing issues where the engine turns to ACC (Accessory) mode instead of shutting off completely, which can be frustrating. This problem may manifest as the engine shutting off while the truck remains in ACC mode, requiring extra steps to turn off the vehicle entirely. Additionally, some drivers have noted that the engine stays in ACC mode even after opening the door, suggesting a potential electrical system malfunction. In more serious cases, if the engine switches from run to ACC mode while driving, it is crucial to address the issue promptly for safety reasons. One workaround that some drivers have found is pulling the PCM fuse to shut down the engine when it remains in ACC mode. The issue could also be linked to components like the electronic shift module or transmission control module, which may prevent the electronics from shutting off if the computer detects that the shifter is not in park. It is advisable for affected owners to consult with a qualified mechanic or dealership for effective diagnosis and resolution.