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The O2 sensor is one of many things that can turn on the check engine light. You need to have it checked for codes.

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โˆ™ 2008-09-14 01:41:20
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Q: Would the check engine light come on if the oxygen two sensor needed replacement?
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How do you turn a oxygen sensor light off?

You can not. Replacement of the oxygen sensor is the only way.

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