P0420 Honda CRV Advanced Diagnostics "Complete Guide"

The first video was very vague and I wanted to break down what goes into to properly diagnosing a catalytic converter efficiency code a little deeper. After installing a new catalytic converter this customer has been back 2 times I would love to hear your question, comments or advise below. Connect with me: Instagram:  : Disclaimer: Due to factors beyond the control of The Flat Rate Mechanic, it cannot guarantee against unauthorized modifications of this information or improper use of this information. The Flat Rate Mechanic assumes no liability for property damage or injury incurred as a result of any of the information contained in this automotive repair video. The Flat Rate Mechanic recommends safe practices when working on cars or trucks with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this repair video. Due to factors beyond the control of The Flat Rate Mechanic, no information contained in this automotive repair video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained.