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Assume you mean the O2 sensor. In any case, you will have to reset the onboard computer to clear the code. If there is still a problem the code will re-appear after you run the engine again. The owners manual usually shows how to clear the code, if not go to your local library and look in some of the automotive reference manuals. I'm sure the error code did not say to replace the O2 sensor. The code gives a reference to what troubleshooting tree to use to help determine what the cause is. If it were the problem and you replaced it, it would have went through a self test and the light would have gone out on it's own, assuming there were no other problems that all of the monitors (self-tests) passed.

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โˆ™ 2005-10-20 01:48:47
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Q: You had the co sensor changed on your 99 Chevy s10 because that is what the error code said was wrong however the check engine light is still on Any ideas?
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