Check Eginge Light comes on and off

Have you gone in to the diagnosticskis menu to check if there are any codes?

 

Not sure check them both for aNY recent codes

 

That is transmission air pressure, not sure if it's to lor or high

 

Stop speuclatin' and get the codes read properly any truckstop tech will do it. some won't even charge you. Last time I dealt with this it was a short in my DPF system. My point is: Trolling for clues on a forum is time wasted that you might not have.

 

Your transmission air supply is low. Most likely the airline or connection is leaking on top of the transmission . It happens, get it fixed because it gives you plenty of warning. But when it goes you are sitting on the side of the road and spending lots for a really stupid reason.