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How do i reset the check engine light on a 2002 ford focus zx3?

To reset the check engine light, follow these steps:

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.