I have a low mileage F250 4x4, 460, with 57k miles. Truck was owned by retired couple who brought it to Oregon from California in 1999, with only @50k, so it has sat most of the recent years. Have been sorting things out, servicing the transmission, etc.

The truck does not shift into overdrive, but the overdrive off button on the dash lights up when you depress it.

Does anyone know if the truck will throw a code to help diagnose the problem, or is it a known problem?

 

Yes, it will throw a code. No, this is not a common problem.

 

Thank you, will check codes in the next few days.

 

So the codes I found were 74 and 77. I did not do the wot test, foot to the floor, since my info said it was not part of the procedure for my truck.

Since the test, I replaced the brake light switch, and the mlps or neutral safety switch, still no overdrive.