Sounds similar to my 2018RT which was replaced under the lemon law. Dealer had no clue.
Good luck. I hope your dealer is better than mine. They replaced both fuel pumps and it did nothing.
I have read other members with this issue....check the injectors. They might be leaking down after you turn the vehicle off. Does it happen a set time after your shut it off? Mine did it when it was off for 60-90 minutes.
Does it have smoke or smell from the exhaust?
Sent from my iPhone using Tapatalk