P0420 How To Diagnose A Bad Catalytic Converter -EricTheCarGuy

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O2 Sensor Video:    • O2 Sensor Basics - EricTheCarGuy  

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I know this video will not only save people some money but also I think it will solve a lot of confusion concerning the operation of the catalytic converter. These tests work as you can see in the video. So the next time you have a P0420 or someone tells you your catalytic converter is bad you'll know what to do to find out if that is indeed the case.

Stay dirty

ETCG

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