DTC P1607: Powertrain Control Module (Pcm) Internal Circuit Failure

Perform PCM reset procedure. See PCM RESET PROCEDURE/CLEARING CODES . Start engine and allow to idle for 5 seconds. If DTC P1607 does not reset, problem is intermittent, system is okay at this time. If DTC P1607 resets, substitute a known-good PCM and recheck. If symptom or problem goes away, replace original PCM.