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What you will need
- Connect the OBD-II Scanner to the OBD-II Port located below the dashboard.
- Push the start button once without pressing the brake pedal to set the vehicle to the accessories menu.
- Once the scanner is set up, go to the diagnostic menu and select read codes.
- Select stored codes and the scanner will show a faulty code, for example, P0102 - Mass Airflow Sensor Circuit Low.
- Turn off the vehicle before repairing the mass airflow sensor.
- Open the hood. Pull the hood release under the dashboard and unlock the hood latch, then pull the hood up and secure it open using the hood strut/prop.
- Locate the mass airflow sensor on the firewall area behind the brake fluid reservoir.
- Disconnect the electrical connector of the mass airflow sensor by pressing the clip and pulling the connector out.
- Remove the two screws holding the sensor by turning them counterclockwise using a Philips screwdriver.
- Once the screws are removed, pull the mass airflow sensor out from the vehicle.
- Line up the new mass airflow sensor and press it in to set it into place.
- Reinstall the two screws holding the sensor by turning them clockwise using a Philips screwdriver.
- Connect the electrical connector of the mass airflow sensor by pushing it into its connection port.
- Turn the ignition switch to the accessories menu again by pushing the start button once without pressing the brake pedal.
- Go to the diagnostic menu on the scanner and select erase codes.
- Press enter to erase the stored codes on the scanner.
- Start the vehicle a few times and check if the check engine light is fixed.