what could cause p1762 and p1763 show up at the same time?

Question

Transmission doesn' t take 1st gear

Answer 1

P01762 GOV. pressure sen offset volts too low or too high

P1763 GOV pressure sensor volts too high

If there no first gear, you have a electrical problem when the code is volts too high this mean there is either a failed connection which will cause a circuit high, and if it does make contact it goes low. Since you have both a circuit high and a circuit low, this is a failed sensor