So when I start my truck when it's cold, if I don't let it warm up for a bit before I put into gear I get a check engine light with these codes. Once it warms up a little bit I can clear the codes and the truck drives perfectly fine. Shifts through all gear fine. Could this be something as simple as the pressure switch manifold? Or anyone else have this issue before? What did yours end up being?
It's happened when it's below 40s. Have to wait about 15-20 mins and it doesn't seem to do it. I just bought the truck a year ago but it was sitting. I'm not sure when the last time the fluid was changed. I plan to do it soon. Later this month or next
Try starting the truck daily, put it in gear, and see what happens. Sitting, not driving, often causes frustrating problems like that. Trucks that are often driven just don't experience such problems. Make sure you have clean fluid at the proper level. Consider changing the fluid. Your pressure switch had codes but latest start they didn't show up. Parking your truck on uphill/downhill slope may cause such problems particularly if fluid is low. Make sure your batteries are fully charged. Low voltage at the trans can cause all kinds of weird problems.