On my last truck , my reader didn't give em a trans temp.
On another forum , one poster who came along was one of the engineers for ford, who designed transmissions.
He told me some tranny's didn't have a temp sender. I could have installed one, but traded it before actually needing one.
They are pretty much standard now.
I doubt many people even know what temp their tranny is supposed to run, I know I've forgotten.
I do still have an older 07 ranger with no trans temp, my cheap OBD2 scanner reads it fine. Even on the 06 f 1560 , I traded it read the codes, just not the temp, due to no temp sender.
You could probably install a factory temp sender switch and your computer would recognize, and read it. Probably.