1. Turn on the ignition but do not start the engine. Make sure all the accessories, such as lights and air conditioning, are turned off.
2. Locate the diagnostic port. It's usually under the dashboard, near the driver's side door.
3. Connect a scan tool or OBD-II code reader to the diagnostic port.
4. Turn the key to the "ON" position without starting the engine.
5. Wait for the code reader to communicate with the vehicle's computer. This may take a few moments.
6. Once the code reader has established communication, it should display any trouble codes stored in the computer.
7. Use the code reader to clear the trouble codes. The exact steps for this may vary depending on the code reader, but there should be an option to clear or erase codes.
8. Turn off the ignition and disconnect the code reader.
9. Start the engine and check if the check engine light is still illuminated. If the light is off, the reset process was successful.
10. If the check engine light is still on, there may be an underlying issue that needs to be addressed. It is recommended to have the vehicle inspected by a qualified mechanic to identify and fix the problem.
