Will the malfunction indicator light come on if the catalytic converter is faulty?

[DaniellaFitz]

The malfunction indicator light will come on if the catalytic converter is faulty. The main function of the catalytic converter is to filter vehicle exhaust, ensuring that the final emissions meet standards. Consequences of a faulty catalytic converter: When the catalytic converter malfunctions, in addition to causing the engine malfunction light to illuminate, it can also easily lead to excessive exhaust emissions. This is because, after the catalytic converter becomes clogged, chemical complexes adhere to the surface of the catalyst. Introduction to the catalytic converter: The catalytic converter is the most important external purification device installed in a vehicle's exhaust system. It converts harmful gases such as CO, HC, and NOx emitted from vehicle exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions. When high-temperature exhaust passes through the purification device, the catalyst in the catalytic converter enhances the activity of CO, HC, and NOx gases, promoting specific oxidation-reduction chemical reactions. CO oxidizes at high temperatures into colorless, non-toxic carbon dioxide gas; HC compounds oxidize into water (H2O) and carbon dioxide; and NOx is reduced into nitrogen and oxygen. These three harmful gases are transformed into harmless gases, thereby purifying the vehicle's exhaust.