2002 2500 HD...transmission in limp mode
TCM fault and line pressure fault not showing gear selection at times. Has new filter, fuild levels good, not burnt. Guys, what can it be and how do I fix it. Thanks for your help!

Codes are
0722 speed sensor circuit no signal
o700 tcm Mil Request
0847 pressure circuit b
0872 pressure circuit c

it is in limp mode. no gear selector in reverse or neutral
stuck in third gear.

Can get all gears if I cycle the key on and off 10 times then restart I get all gears for a while. But it still bangs going into gear

first things first. you have to have a speed sensor signal in order to shift. i'm guessin that your pressure switch manifold that bolts to your valve body is bad

I figured it out. it was the nsbu switch.

Cool easy fix