Code p1739 came up on car fixed that and still have problem

Question

I have a 2000 acura TL the problem with it is after it warms up the transmission starts slipping real bad and when you turn it off for 2 seconds and turn it back on it goes back to normal and the check engine light came on the code I got was p1739 which is the 3rd clutch pressure circuit I replaced that and hooked the scanner back up and it said there were no codes but the transmission still starts to slip after about a half hour of car running and then I turn the car off for 2 seconds and back on and it stops so it is still doing the same problem what could it be