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Engine Code P0420 Saving Repair Parts:
Catalytic Converter Cleaner: https://amzn.to/3r67qCf
Bucket: https://amzn.to/3lEmxlf
Detergent Soap: https://amzn.to/3sbMISV
Oxygen Sensor: https://amzn.to/3scToQE
Half Inch Drill: https://amzn.to/3r67Fx9
Spark Plug Non-fouler: https://amzn.to/3lAHu0y
Oxygen Sensor Extender: https://amzn.to/2PiLqqz
Oxygen Sensor Socket: https://amzn.to/3rd9acV
Spark Plug: https://amzn.to/2OTZSFQ
Spark Plug Gapper: https://amzn.to/3cTDaFF
Fuel Injectors: https://amzn.to/3c92vMY
Exhaust Putty: https://amzn.to/3vMpDbz
Sandpaper: https://amzn.to/3tHqDvR
Wipes: https://amzn.to/3lzaZjq
Heat Gun: https://amzn.to/3r6YPPR
Heat Wrap: https://amzn.to/3r6YQDp
ECT Sensor: https://amzn.to/3tHmuIf
Multimeter: https://amzn.to/3tHIlQ2

Engine Code P0420: Catalyst System Efficiency Below Threshold (Bank 1). It indicates that the Catalytic Converter is not functioning efficiently, so the vehicle is increasing the output of harmful pollutants. How to clean the Catalytic converter. Tips and tricks for cleaning a catalytic converter in your car and fixing code P0420.

Method 1: Use a Catalytic Converter Cleaner
1. Get a Catalytic Converter Cleaner
2. Pour into the Gas Tank
3. Run the Engine

Method 2: Wash the Catalytic Converter
1. Remove the Catalytic Converter
2. Get a Bucket with Water & Detergent
3. Soak the Converter for 10 Hours

Method 3: Modify the Oxygen Sensor
1. Remove the Oxygen Sensor
2. Prepare the Components
3. Refit the Components
4. Re-install the Oxygen Sensor

Method 4: Oxygen Sensor Replacement
1. Inspect the Oxygen Sensor
2. Replace the Oxygen Sensor

Method 5: Adjust Spark Plugs
1. Remove the Spark Plug
2. Check the Spark Plug
3. Adjust the Spark Plug

Method 6: Replace Fuel Injectors
1. Inspect the Leaking Fuel Injectors
2. Remove All Fuel Injectors
3. Dip Them All in Gasoline
4. Reinstall the New Fuel Injectors

Method 7: Paste the Exhaust Leaks
1. Inspect and Clean the Leaks
2. Apply the Exhaust Putty
3. Let it Cure for 2-24 Hours

Method 8: Wrap Up the Exhaust Leaks
1. Inspect and Clean the Leaks
2. Activate the Heat Wrap
3. Apply the Heat Wrap
4. Run the Engine for 30 Minutes

Method 9: ECT sensor
1. Inspect the ECT Sensor
2. Replace the ECT Sensor

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0:00 P0420 Intro
1:19 Method 1: Use a Catalytic Converter Cleaner
1:54 Method 2: Wash the Catalytic Converter
2:58 Method 3: Modify the Oxygen Sensor
3:37 Method 4: Oxygen Sensor Replacement
4:40 Method 5: Adjust Spark Plugs
6:07 Method 6: Replace Fuel Injectors
7:28 Method 7: Paste the Exhaust Leaks
8:18 Method 8: Wrap Up the Exhaust Leaks
9:49 Method 9: Replace ECT Sensor