Why does engine emission failure occur?

1 Answers
Reed
07/30/25 9:51am
Engine emission failure is caused by issues in the emission system. Reasons for emission failure: Most engine exhaust system failures are due to the quality of domestic fuel, damage to the oxygen sensor in the three-way catalytic system, or poisoning of the three-way catalytic converter. Solutions for emission failure: If the engine exhaust system fails while driving, immediately reduce speed and drive to the nearest service station for inspection and repair. If the vehicle stalls and cannot start, this is usually due to a fuel pump or ignition system failure—call for a tow truck directly. If the vehicle can still be driven but exhibits severe shaking, lack of acceleration power, or similar symptoms, turn off the engine immediately and call for a tow truck.
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