transmission troubles

[hts]

hello all,im having trouble with my 02 explorer xlt the ck eng light comes on and the o/d light flashes for about 2 min on every trip I make.i plugged in my code reader it says p0755 shift solenoid B.i clear it but it comes right back on the next trip.when o/d flashes it is accompanied by hard shifting and missing shifting between 1st and 2nd I think.the trans shop that has the warranty on this 2 yo replacement is telling us that its in the wiring harness that ford had trouble with this.every time we get it back from them they say its fixed but the light comes on the next day.they say they cant make it come on but I don't seem to have any trouble im just looking for some direction on this prob.

 

[PopRichie77]

When the OD light flashes the computer puts the trans in Limp mode and raises the pressure to make it drivable to where it can be fixed. Some of them also start in 3 gear. This causes hard shifting. It isn't hard to trace out the solenoid wire up to the computer. It could also be the connector on the side of the trans or the wiring inside the pan that goes from the external connector to the solenoid block again this can be checked or the most likely thing is solenoid block needs replaced.