July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

DTC P0603, DTC P1605, DTC P1633 Or DTC P1639: Notes

Code Definition

DTC P0603: PCM Keep Alive Power (KAPWR) Circuit
DTC P1605: PCM Keep Alive Power (KAPWR) Circuit
DTC P1633: PCM Keep Alive Power (KAPWR) Circuit
DTC P1639: PCM Corrupted Or Not Programmed Correctly