In this video, you will learn 5 symptoms of a bad or failing oxygen sensor (upstream). Watching this video will help you diagnose to see if it is time to replace your oxygen sensor. You will also know how an oxygen sensor works. This video also teaches you where the oxygen sensor is located. You might be experiencing poor performance, failed emissions, rough idle, bad mpg, and a check engine light. Some of the engine codes you might retrieve are P0150-P0167.
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Upstream oxygen sensor
bank 1 sensor 1
bank 2 sensor 1
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