P0715 Limp Mode why is this seems to be common with these cars tranny not shiftn

What is your question?

P0715 limp mode seems to be common with these cars and how to fix it's never a one solution trick. Do you replace the speed sensor, conductor plate or the trnny fluid. But I read those are not always the fix though what gives, this is a pain in the rear end! My trnny works fine when it's not in LIMP MODE. Please someone give me the absolute fix, I may be asking for a little to much probably!