02 Durango. Been havin problems with the trans goin into limp mode. Showin an 0700 code on the odometer. I would erase the code and it would be good for a day or two then back into limp.
I bought a cheap reader so I could erase it myself and it reads a code 891 which reads tcm sensor voltage too high. Where should i look to find the problem?
As a side note, my fuse box under the hood has had corrosion on the fuses, I have cleaned them all up, but feel this MAY have to do with the problem.

Any help would be appreciated as I am not happy spending much more $$ on fuel as there is no overdrive right now.