Hi everyone, Oscar Gomez here from Master Automotive Training! In today's video, I'm going to walk you through the P0420 Catalyst System Efficiency Below Threshold Bank 1 code and how I determined the catalytic converter was faulty using a scanner.
We'll also discuss the P0430 code, which signals a similar issue in Bank 2. I'll share my personal approach to diagnosing these codes, including checking for exhaust leaks, inspecting oxygen sensors, and evaluating the catalytic converter's performance.
Join me as I take you step-by-step through the process, helping you understand the ins and outs of these error codes and what they mean for your vehicle.
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