how do i fix my transmission so it can shift? on 2001 Honda Accord

i replaced my transmission now it wont shift out of first and speedometer wont work. i code tested and it gave me p0700 and p0720

1 answer
Did you replace it with a used one from a salvage yard , or a re-man. from Honda? Did you re-check your connections at countershaft speed sensor and gear selector switch? Is this a 4 or 6 cyl.?