How to Solve the Frequent Illumination of the Three-Way Catalytic Converter Engine Fault Light?

1 Answers
SanDonovan
07/30/25 2:55am
The solution to the frequent illumination of the three-way catalytic converter engine fault light is to clean the three-way catalytic converter. The cleaning method is as follows: 1. Start the engine and wait until the water temperature is normal before turning off the engine; 2. Pour the cleaning solution into a special device, and connect the device's output connector to the vacuum tube; 3. Start the engine, open the flow control valve, and slowly drip the cleaning solution into the intake tract; 4. After cleaning, keep the engine running for 3 to 5 minutes. The three-way catalytic converter is an external purification device installed in the vehicle's exhaust system, which can convert harmful carbon monoxide, hydrocarbons, and nitrogen oxides emitted by the vehicle's exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions.
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