Titan XD Diesel Pro4X
I had the same thing happen to me. All I did was let out about 5 # from each tire, then reinflated them to about 40# all the way around. Drive about 2 or 3 miles, turn off the truck, then the next time you drive the truck, it will reset itself and shut off the light. I think the cause is sometimes moisture gets trapped in the valve stem giving it false readings, so you need to purge the stem and reinflate to desired psi. That's what worked for me. Also, if you have a pressure monitoring sensor on your spare, you might want to check it also....I have seen the spare be the culprit in the past on other friend's vehicles.