DTC P1693: DTC DETECTED IN COMPANION MODULE Turn ignition on with engine off. Using scan tool, clear DTCs from PCM. Using scan tool, check for stored DTCs in ECM. Perform appropriate test procedure for stored DTCs in ECM. Perform TEST VER-2A .   Mopar's Note's: This error code cannot exist by itself and will have other error codes present in the ECM and/or PCM you'll most likely require an OBDII scan tool to get the codes. P1693 is nothing more than a flag that is