I have read a lot of the forums in relation to this but am having problems. I have an o5 duramax that was going into limp mode have changed out the harness going to 2, 3, 5 and 8. truck runs fine but after awhile the code comes back and goes back into limp mode showing some of the injectors. Shut off truck cycle a few times truck runs fine again. What am I missing here, what else could it be.
Limp mode
- Thread starter rossi
- Start date
What codes is it throwing? Any mods done? I assume it's engine limp not transmission Bc you stated you replaced injector harness.
No mods done here is what it is saying injector circuit open fuel injection group b supply voltage circuit open. varies as to which one goes off 2,3,5 or 8. like I said I thought after pig tailing them all and cleaning with electrical spray this would have smartened up the problem.