i got a code on the way home from work tonight:

P0108 “manifold absolute pressure (MAP) sensor circuit High MH ($11) “Engine control module”

i floored it on the interstate and when i let off i noticed the cel.
the truck ran fine, it did not affect anything.

i got home and cleared it. Is anything wrong?? do i need to do something else??

hmmm my buddy's truck is doing the same thing

http://www.dieselplace.com/forum/showthread.php?t=183784

Have you tried adding more counts to C0804? Or just upping the voltage of C0803?