Pcm Code P047 - IPC-To-Pcm Data Problem: Action

PCM turns on SERVICE ENGINE SOON light, clears all IPC data from PCM memory and disables A/C clutch. Cooling fan control will be based on engine coolant temperature only.

Fig 1: PCM Code P047 Schematic - IPC-To-PCM Data Problem

Courtesy of GENERAL MOTORS CORP.