Once you have properly diagnosed and resolved the issue that triggered the OBD fault code, you can reset or clear the engine/service engine soon light quickly using one of two methods.
Note: The code (i.e., the CEL/SES light) usually disappears after a number of driving cycles, perhaps a few days. You can choose to wait it out or follow one of these methods.
The cheap, easy, and free method
Simply disconnect your battery, turn on the headlight switch for about five to ten minutes, and reconnect the battery. It’s quite simple, but it will likely cause you to lose your radio presets and maybe other small things like that.
Using a scan tool
Most scan tools, if not all, have the ability to erase or reset codes without using tools or touching the battery. Consult your tool’s manual to learn how to do this with your specific model.