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By repairing whatever tripped the light. Then you use an OBD2 scan tool to reset the light.

AnswerYou just have to disconnect the battery for a minute and then the check engine light go off, if the problem has been fixed! AnswerDisconnecting the battery will reset the light on most, but not all, 1995 & older cars, but on 1996 and newer cars this will rarely reset the light. It requires an OBD2 scan tool to reset the light on most newer cars.
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15y ago

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