My car's dashboard indicates malfunctioning and, when reaching 40-50 mph, the overdrive won't enter and it stops there. I then change the car to Neutral or Parking, start it again and it works properly for a while. After some minutes driving, the same scanning failure presents and the codes p0700 of the transmission and p0128 appear. I've disconnected the battery, cleaned the computer's connectors and changed the radiator's lid, which had some leaking failures, but the problem is still there.