Bad O2 Sensor or Bad Catalytic Converter: Key Differences

Comparison of a faulty O2 sensor with soot buildup and a damaged catalytic converter showing cracks.

If your car’s check engine light is on and you’re experiencing poor engine performance, reduced fuel efficiency, or strange exhaust smells, you might be dealing with either a bad oxygen (O2) sensor or a bad catalytic converter. Both components play essential roles in managing your car’s emissions and ensuring optimal engine performance, but diagnosing the exact issue can be tricky, …

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