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Never heard of nor have I seen an Oxygen Sensor light. If you are referring to the Check Engine Light, then that light comes on when there is a problem with the emissions controls. It may be a bad O2 Sensor or it may be many other things. Don't assume the O2 sensor is bad. Depending on the year vehicle you own, which you failed to mention, you reset the light on most 1995 & older vehicles by disconnecting the battery for 5 minutes. On most 1996 & newer vehicle, you reset the light with an OBD2 scan tool.

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18y ago

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