Automatic Trans Does Not Shift

The check engine light indicates that the computer has detected a malfunction in the engine/transmission control system and has diagnostic codes and data stored which would be essential in diagnosing the problem. A technician with a scanner can access the diagnostic codes and data and then be able to give you a diagnosis. Get it checked out, I think that the transmission has a problem and is in its' default "fail-safe/limp-in" mode which is designed to save the transmission from further damage and get you home or to a shop should part of the system fail. I recommend you find a Chrysler specialist and get the car diagnosed. If it turns out to be a transmission problem it may be good to take it to a transmission shop for a big repair. If you want to find a Chrysler specialist, here's our directory link for you: https://repairpal.com/chrysler-repair-in-winter-park-florida