1. Locate the OBD-II port. The OBD-II port is usually located under the dashboard, near the steering wheel.
2. Plug the OBD-II scanner into the port. Make sure the scanner is securely plugged in.
3. Turn on the ignition. Do not start the engine.
4. Wait for the scanner to power up. The scanner will display a welcome message or instructions.
5. Follow the prompts on the scanner. The scanner will prompt you to select the make, model, and year of your vehicle.
6. Select the "Read Codes" option. The scanner will read the check engine light codes from your vehicle's computer.
7. Write down the codes. The check engine light codes will be displayed on the scanner. Write down the codes so you can research them later.
8. Clear the codes. Once you have written down the codes, you can clear them from your vehicle's computer. This will turn off the check engine light.
Note: You can purchase an OBD-II scanner online or at an auto parts store. Some auto parts stores may also offer a free OBD-II scan service.
