Engine/Transmission (1998.5 - 2002) SuperChips and P0238, now in limp mode

[EFretwell]

The truck was programmed with a superchips and the cel immediately lit after the superchips was done programing, read the code P0238 over voltage in the MAP sensor. Was this caused by the superchips or coincidence, the truck ran great with the high performance program. However, when the truck was returned to stock the cel was still lit, and clearing the codes only caused the cel to off then on as the code where cleared. Now in stock program the truck is in limp mode. Is there actually a problem with the MAP, or do the batteries just need to be disconnected for a while to reset the computer. Limp mode **** so I would like to resolve this problem. Thanks.