1. Locate the diagnostic port under the dashboard, usually near the driver's side footwell.
2. Connect a code reader or scanner to the diagnostic port.
3. Turn on the ignition but do not start the engine.
4. Follow the prompts on the code reader or scanner to retrieve and clear any trouble codes stored in the vehicle's computer.
5. Once the trouble codes have been cleared, turn off the ignition and disconnect the code reader or scanner.
6. Start the engine and verify that the check engine light has been reset.
If the check engine light remains on after following these steps, it's recommended to have the vehicle diagnosed by a qualified mechanic to identify and address any underlying issues.
