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You have a choice. You can guess at replacing one of the Oxygen sensors. (I think they are pricy) Or take it to a garage that specializes in this field to determine what is really wrong. A code for an O2 is not necessarily the O2 At Fault.

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โˆ™ 2005-09-08 00:31:11
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Q: Have a 1999 corolla check engine light on code was o2 sensor what do you do?
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