ford 5r55e trany codes p0733 and p0735

Question

I have a 2001 ranger with the 5r553 trany.. My computer is flashing the codes p0733 and p0735... What do these codes have to do with each other and what would make them flash a code...

I know its incorrect gear ratio on gear 3 and 5. But what sensor is the main cause of this???? and will I need to pull the trany again.....