DTC P0601: Pcm Memory Error Or DTC P0603: Keep Alive Memory Error

Turn ignition off. Connect scan tool to Data Link Connector (DLC). Turn ignition on. Clear DTC(s). Start engine and let idle for one minute. If DTC(s) reset, replace PCM and retest system. If DTC(s) do not reset, check for an intermittent problem. See TROUBLE SHOOTING - NO CODES article.