Where is the three-way catalytic converter located?

1 Answers
ClaireDella
07/29/25 6:32pm
The three-way catalytic converter is located at the front end of the engine exhaust pipe, between the front and rear oxygen sensors. The function of the three-way catalytic converter is to convert harmful gases such as CO (carbon monoxide), HC (hydrocarbons), and NOx (nitrogen oxides) emitted from vehicle exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions. Because this catalytic converter can simultaneously transform the three major harmful substances in exhaust gases into harmless substances, it is called a three-way catalytic converter. After prolonged use, substances such as carbon deposits in the exhaust gas may adhere to the porous ceramic carrier of the catalytic converter, leading to a risk of clogging over time. If the three-way catalytic converter becomes clogged, it can only be restored to optimal performance through cleaning.
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