i notice the car have the code and the gas going bad,but the thing is the car engage overdrive only for the first maybe 10 miles,i know is working because you feel it and the rpm's drop at 45 or 47 mph,this is posible,i mean i always think when something electrical is broken dont work anymore,i dont have a lot of experience on trans,where to start,thx

sorry for my english

I have the same code. Its usually the tcc solenoid which is fairly easy to replace. You have to drop the transmission pan and you will see it.