Just posted the same problem last night (early this morning actually). Here is what I wrote:
So I've been getting this warning for the last week or so and it usually only comes up when taking off from a stop. If it's at all relevant, I've been getting the warning while under normal acceleration from a stop. The vehicle boggs down from it shifting through the low gears too fast (eco mode). By 15 mph, I'm usually in 3rd or 4th gear. I also got it once while driving in the city at about 45mph.
A search shows other D owners getting the same error but their issue with the error is more so about not being able to shift the vehicle out of park. In the D forums, I'm not seeing any that pertain to my issue. In a Ram forum though, one guy said after his truck kept throwing the error, having them change out the shifter and then a wiring harness didn't fix the problem. He said it took them changing out the valve body in the tranny. I looked up bad valve body symptoms and I don't see my exact issue in the list. I guess I'm covered under the 5/100 powertrain warranty but I'm not sure it'll be easy getting this fixed if the warning comes and goes just on the dash's LCD display.
Any thoughts?
Btw, no dash lights are coming on when I get the warning and I only have two current evap codes from an ODB scan as well as what looks like an old uncleared P0204 injector circuit cylinder 4 code which I guess was fixed before I bought the vehicle.