What to Do When the Engine Exhaust System Warning Light Comes On?
1 Answers
The illumination of the engine exhaust system warning light is mostly caused by poor fuel quality in the domestic market, damage to the oxygen sensor in the three-way catalytic system, or poisoning of the three-way catalytic converter. If this light comes on while driving, immediately reduce speed and proceed to the nearest service station for inspection and repair. Relevant information about the three-way catalytic converter is as follows: 1. The three-way catalytic converter is the most important external purification device installed in the vehicle's exhaust system. It converts 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. 2. Since this catalytic converter can simultaneously convert the three main harmful substances in exhaust gases into harmless substances, it is called a three-way catalytic converter.