My truck is a 2001 3/4 with 95,000 miles on it. It through the code sat night, when it happened the check engine light came on and the truck lost all acceleration. when I stopped the truck and started it up again it ran fine but the check engine light is still on and the 0121 code is still on there. The truck is still running okay but I am worried that it will leave me on the side of the road if I lose all control of the throttle. I would appreciate any insite into the problem.


-Karlie Ann-

 

Time to try a reset of your APPS.... https://www.dieseltruckresource.com/...n&onlynewfaq=1

I ended up having to replace mine....