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A year ealier, Honda replaced my O2 sensor with a new one, but during the summer, i bought a used Greddy header, but it came with a used O2 sensor with its wires already extended. So I used it for a month before the Check Engine Light Came on. But when I unwrap the old wiring of the O2, i found that the person who sold it to me extended it with speaker wires. Since I still had my pretty new sensor that I used for a few months, i deceided to use my O2 sensor, and use new wires to extend it. However, my Check Engine Light still turns on. It still reads Primary O2 sensor as the problem. So I dont know if the wiring is the problem, or is it the O2.
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