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Q: oxygen sensor on 2006 Scion tC

i replaced the oxygen sensor and is not original nedd to match the wires but they are differents colors, i have one grey 2 whites and 1 black but i dont know how to connect them
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I would not use a universal Oxygen sensor on this vehicle. These are usually an Air Fuel Sensor and need to matched exactly by part number. Even the CAT monitoring or rear Oxygen Sensor is carefully calibrated. Go with an exact fit part.
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