How to Check if Catalytic Converter Is Bad

Illustration of diagnosing a bad catalytic converter, showing an OBD-II scanner, temperature testing, and backpressure testing.

A bad catalytic converter can lead to serious performance issues and potentially costly repairs. Knowing how to check if catalytic converter is bad is crucial for maintaining your vehicle’s health. In this article, we’ll explore the key signs of a failing catalytic converter and provide you with methods to diagnose the problem effectively. Signs of a Bad Catalytic Converter Before …

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