With Generic Scan Tool

How to Erase DTC (With GST)
1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 5 seconds and then turn it ON (engine stopped) again.
2. Select Mode 4 with GST (Generic Scan Tool).
The emission-related diagnostic information in the ECM can be erased by selecting Mode 4 with GST (Generic Scan Tool).