How To Beat A P0420 Code For $6

How to beat a P0420 Code for $6 (Using 48 State cats on a California Emissions Car)

D&E In The Garage

How to Fix P0420 Engine Code in 3 Minutes [3 Methods / Only $19.99]

How to fix a p0420 without replacing catalytic converter

Flat Rate Mechanic

How to Fix P0420 without replacing the Catalytic Converter

Flat Rate Mechanic

Code P0420 or P0430? Check this first.

DadsGarage Diagnostic Specialist

GETTING RID OF YOUR P0420 & P2096 CODES FOR ONLY $6!!

Quick Fix for P0420/30 Engine light Codes

P0420 code fix PERMANENT, EASY, CHEAP

🚗 Alert! Is Your Car Showing These P0420 Code Symptoms?

Catalytic Converter for code P0420

How to Fix Code PO420 and PO430. Pass Emissions Test.

Customer States They Wanted the $10 CEL Fix for the Catalytic Converter Code P0420

Jay's Mobile Mechanic Services

HOW TO FIX PO420 CHECK ENGINE LIGHT CODE & PASS INSPECTION

Check Engine Light Code P0420 on Your Car / Truck? Replace These Parts to Pass Emissions

1A Auto: Repair Tips & Secrets Only Mechanics Know

How to fix P0420 code with non Fowlers (cheap & easy)

MightyMotors207

how to fix P0420 codes Suzuki|P0420 B1 S1 fixed code|how to o2 sensor clean|P0420| #catalytic

Causes and Fixes Chevrolet P0420 Code: Catalyst System Low Efficiency Bank 1

How to pass emissions test with P0420 and or P0430 (proof)

P0420 Catalyst System Efficiency

Beating the P0420 Check Engine Code!