Step 1: Turn the key to the "ON" position, but do not start the engine.
Step 2: Press and hold the "Trip Reset" button on the instrument cluster.
Step 3: While holding the "Trip Reset" button, turn the key to the "OFF" position.
Step 4: Release the "Trip Reset" button.
Step 5: Turn the key to the "ON" position, but do not start the engine.
Step 6: The check engine light should now be off.
If the check engine light does not turn off, you may need to have your vehicle serviced by a qualified mechanic.