+1
I had the same problem.
Just over 500 miles on the 2022 1500 Limited 5.7 eTorque.
PIcked up the boat to tow it home (not huge, 3k lbs or so.)
Drove it in Tow/Haul mode for the first time.
Drove about 30 miles, then coming to a stop at a light:
Vibration/runs rough (sometimes it feels like the eTorque just keeps it in high gear while you stop and just lets it stall!
)
CEL; Auto Stop/Start warning; ACC warning.
Power cycle Truck
CEL remains, other lights off; truck runs fine.
RAM App starts sends me 3 Vehicle Health Checks with issues.
Drive home, pull code: U0402 (Implausible Data Received from Transmission)
Scheduled service (they're a week out!)
Drove it that week, CEL resolved in a day or so, truck ran fine.
RAM App sends me vehicle health checks at least once per day with a warning for the ACC (my 'scan tool', Torque Lite, only finds the U0402 code stored)
Took in to dealer (CEL now off)
Dealer finds stored code, with 44 good key cycles since the code was stored; Considers me crazy for bringing in the truck (even though the RAM app asked me to EVERY DAY, and I caught a CEL with 550 miles on the truck!).
Dealer called it a "Fluke" and shoudn't happen again.
I am not convinced.
(Drove it around in Tow mode this week w/ no trailer, and no issues yet, so we'll see)
(1000 miles on a brand new truck, and I'm worried it may not drive, thanks Chrysler,Dodge,Ram!)
Thanks to the others for posting, and especially for the STAR case info!