What are the causes of Volkswagen three-way catalytic converter failure?

1 Answers
SanEzra
07/29/25 8:29am
Volkswagen three-way catalytic converter failure is mainly caused by high temperature leading to the failure of the three-way catalytic converter and carbon deposits causing the failure of the three-way catalytic converter. High temperature leading to the failure of the three-way catalytic converter: When a car is driven at high speed with a high load for a long time continuously, the three-way catalytic converter is exposed to high temperatures for an extended period. If the engine suddenly shuts off, the unburned mixture combusts in the catalytic converter, causing intense oxidation and heat release, which can easily overheat the three-way catalytic converter. Carbon deposits leading to the failure of the three-way catalytic converter: Carbon deposits produced by engine combustion cover the surface of the three-way catalytic converter, preventing it from effectively performing reduction reactions. Carbon deposit failure is currently one of the main causes of three-way catalytic converter failure.
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