1. Turn on the ignition, but do not start the engine.
2. Connect the OBD-II scan tool to the diagnostic port, which is usually located under the dashboard.
3. Turn on the scan tool.
4. Select the "Service Engine Light" option from the menu.
5. Choose the "Reset" option.
6. The service engine light should turn off.
7. Disconnect the scan tool.
8. Start the engine.
If the service engine light turns back on, you may need to have your vehicle diagnosed by a mechanic to identify and repair the underlying issue.