DTC Troubleshooting: P0602 (196-1)

DTC P0602: ECM Programming Error NOTE: When ECM update is not completed, DTC P0602 is stored.

1. Do the ECM updating.

1. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0602 indicated?

YES | - | Substitute a known-good ECM, then recheck. If the symptom/indication goes away with a known-good ECM, replace the original ECM. ■
NO | - | Troubleshooting is complete.■