Started truck this morning, was the 1st time it was cold enough for high idle to work since getting it enabled. Ran back in the house for a few minutes, when I jumped back in and stepped on clutch I realized I had a CEL. Of course I'm out of town so went to oreillys and it shows p0237/map sensor. Any suggestions where to start? It is way down on power too

How does the truck drive?  Is it smokey offidle more so than normal?

I would also pull the edge out and see if the code goes away or not.  At least put the map wiring back to stock.

Thanks for the reply. Was gonna try disconnecting edge but had errands to run first. About 4th time I shut it down and restarted while running around CEL went away and runs like always. Probably need to clean some connections

Had another weird thing happen yesterday a couple times. When I went to start truck I got no WTS light, and lift pump continued to run instead of normal bump. I shut key off, waited a few seconds and everything worked normally. Hope this isn't the ECM dying