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You could try disconnecting the battery for ten minutes that would clear the engine light. If it clears the light then comes back on later then the loose cap was not the reason. ==Answer == More than likely the loose cap was the culprit. After a few driving cycles the light should go out. If it does not go out, you could take it to a Parts Store such as Auto Zone and explain what happened and ask them to reset the light. Then if the light comes back on you will know it was not the loos cap.

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โˆ™ 2006-03-24 15:11:25
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Q: Your check engine light came on the same day you found out your gas cap was loose but now it won't go off Should you have it checked for a real problem or not?
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