Allison 5sp: Shift range inhibited

[brunok]

"Shift Range Inhibited" flashes, no reverse but all other gears seem fine.

Started after a hard run from stoplights

NSBU switch sounds like what i need from searching.

What do yall think?:hug:

 

[Mike L.]

Codes.

 

[brunok]

Knew that was coming...

My V2 is in San Angelo and im in Louisiana. Going to get it this weekend but guess ill run down and see if the parts store here can read the codes tomorrow.