Cooltoolguy

Hi all, new here to the forum, I have 3 connects, 2 -2014 and one 15 that are used for service runs. One of the techs using the van called me and said it’s getting the trans fault on the dash, but do a key cycle and it’s fine for a bit again, I’m 100 miles from where he is and before I head out to get the van, is there a sensor or something common that will give this issue? thank you steve