P0420 How To Diagnose A Bad Catalytic Converter -EricTheCarGuy
Visit me at: http://www.ericthecarguy.com/ O2 Sensor Video: https://www.youtube.com/watch?v=NIzcztO-CCs Discussion about this video: http://www.ericthecarguy.com/forum/18-The-EricTheCarGuy-Video-Forum/42514-p0420-how-to-diagnose-a-bad-converter#42610 I know this video will not only save people some money but also I think it will…