Final Check

Download the full database via torrent (~1.1 TB)

Ensure all electrical components and connectors are hooked-up.
Test drive vehicle under conditions that may recreate fault.
Recheck for DTCs.

If symptom or DTC(s) return, ensure ECM terminals are not bent, corroded or damaged in any way. If no fault can be found and symptom or DTC remains, substitute a known-good ECM and retest.