Transmission not shifting. on 1997 Ford Contour

Drives great under 40 mph above that it acts like it dont know when to shift.Had code read it came back to trans range code but later found out that trans dont have trans range sensor but does have trans speed sensor which they say is just the same!!! What do you think help me out. Thank you!!

Asked by for the 1997 Ford Contour
You do have a transmission range sensor... The code may mean a faulty sensor, but could mean something else. The sensor is a place to start.
Thank you Im gonna go with that for now,Ill let ya know what happens.Thanks again sir!!