03 celica GT auto trans problem

:mad:I have an 03 celica gt auto w/OD. THe other day I got into the car and attempted my usual routine. Haha this is where the fun started! NOw I find I can't get the shifter past neutral. I disconnected the shift linkage on tranny and found the Cable to function properly when not connected to tranny. I Don't want to get another tranny if this is an easy fix!!!!!

Thank you in advance for any help!!

Daren