I have a 2015 Ram ED with several codes...P2D2D &E, P200A &B, P0128, P0420, P050E, and P20EE. I'd love to know what needs fixing before I take it to the garage. Many thanks.
Did you check your DEF injector for cristalization? One month ago, I got P20EE code and the injector was severly clogged by the urea accumulation. Like a white gummy stuff between the injector and the SCR (second catalyst) Cleaned it with steam and no more code. The gummy stuff was also present at the entrance of the SCR. This issue is largely covered in differents forums. I took a video of the gummy in the injector and the SCR. Like somebody who put mastic in this area.