02 Extenders (P0420)... Do they work? My Test results. Published 2019-07-16 Download video MP4 360p Recommendations 05:28 Discover if Spark Plug Non-Foulers Actually Work and Why! 10:02 How To Fix A Catalytic Converter Check Engine Code With Spark Plug Non Foulers! 05:25 Fix P0420 Code | How To Use O2 Sensor Spacers | Project M3 Episode 2 14:26 How to clear code P0420 for good !! 07:35 $3 O2 simulator fix for P0420 Check Engine Light 24:03 Full Detail Steps How cheap fix a P0420 P0430 code / clear w/ Spark plug non fouler pass inspection 08:47 Don't Buy Oxygen Sensors! How to test o2 sensor 07:24 NEVER Change Another O2 Sensor Until You WATCH THIS! 10:40 9 Solutions to Fix P0420 - Don't Start Fixing Before Watching This 28:02 The GIGA JUKE is dead. 05:57 How to Pass Emissions Without a Catalytic Converter! 09:13 Fix your Catalytic Converter for $10? 06:11 P0420 Oxygen Sensor Fix 07:36 Oxygen sensor (O2 sensor) spacer test and results. 10:03 How to fix P0420 code with non Fowlers (cheap & easy) 08:31 Can Sparkplug Non-Foulers Fix A Bad Catalytic Converter? 04:37 Cheap fix for your P0420 check engine light 11:03 How To Diagnose A P0420 Catalytic Converter Low Efficiency Code Plus Exhaust Leak Testing Similar videos 04:14 How to Trick an O2 Sensor - Is O2 Sensor Bypass Worth It? 11:57 The Trainer #118: The REAL Cause Of P0420/P0430 DTCs 02:32 Best O2 Sensor Check Engine Light Fix for Catless/High Flow Cat Exhaust on Challenger or Charger 03:37 $4 Catalytic Converter P0420 Fix | 02 Sensor Simulator | Pass Emissions | Oxygen sensor 08:10 CHEAP Catalytic Converter Fix - P0420 P0430 10:08 Never Install This on Your Car 00:58 No Cat's? No Problem! O2 Simulator! 04:41 How to Get Your Car to Pass the Emissions Test (Life Hack) 20:28 How to Fix P0420 O2 Sensor Spacer 09:40 O2 Sensor Spacer infiniti G35 Nissan 350Z ( P0420 P0430 ) no Engine Lights Anymore DIY! 07:07 Can Cataclean really fix a catalytic converter / P0420 / P0430 error code 01:00 O2 sensor anti fouler fix More results