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How to judge the fault by observing the color of the top of the oxygen sensor?

Date: 2021-05-23        Clicks: 585




① Light gray: This is the normal color of the oxygen sensor;


② White tip: it is caused by silicon pollution. At this time, the oxygen sensor must be replaced;


③ Brown top: it is caused by lead pollution. If it is serious, the oxygen sensor must be replaced;


④ Black tip: it is caused by carbon deposition. After removing carbon deposition fault of engine, it can automatically remove carbon deposition on oxygen sensor.