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What does it mean when the emission light comes on in a 2000 Ford Focus?
Wiki User
∙ 17y ago
It means that the computer has detected a fault and has stored a problem code. You can use a code scanner to find out what's wrong. It's probably something like an oxygen sensor, EGR valve, MAP sensor or something else that affects the emissions, but you won't know for certain until you check for the code.
Wiki User
∙ 17y ago
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