DTC P0607: Powertrain Control Module (Pcm) Internal Circuit Failure (2004 3.5RL)

Perform PCM reset procedure. See PCM RESET PROCEDURE/CLEARING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. Turn ignition switch ON (II) for at least 3 seconds. If DTC P0607 resets, substitute a known-good PCM, and recheck. If symptom or indication goes away, replace original PCM. If DTC P0607 does not reset, problem is intermittent. System is okay at this time.