What Causes Emission System Malfunction and How to Deal with It?
2 Answers
Emission system malfunction causes and solutions are: 1. Poor fuel combustion inside the engine, requiring the use of higher-quality fuel and cleaning the throttle body; 2. Use of low-quality gasoline, necessitating a switch to a different gas station for fuel; 3. Carbon buildup on the engine piston top, requiring cleaning of the carbon deposits; 4. Faulty oxygen sensor in the vehicle, requiring replacement. An emission system malfunction indicates issues with the vehicle's engine components, and the engine warning light will illuminate to alert the owner to check the engine components. The emission system malfunction light, commonly referred to as the engine fault light, will illuminate on the dashboard when the ECU detects and reads a fault code.
After driving for so many years, I've also encountered issues with the emission system. It's usually due to excessive carbon buildup from incomplete fuel combustion clogging the fuel injectors, or the aging and blockage of the catalytic converter causing poor exhaust flow. Once, the engine light suddenly turned yellow, and the diagnosis pointed to a faulty oxygen sensor giving inaccurate readings. Don't take it lightly—start by checking for loose connections with simple methods, and you can try cleaning the throttle body yourself. But if that doesn’t solve it, head to a professional repair shop immediately for a code scan and diagnosis. They might replace the sensor or clean the catalytic converter. Delaying repairs can lead to a sharp increase in fuel consumption and accelerated wear on engine components. To minimize emission system failures, always use high-quality gasoline and avoid frequent short trips with prolonged idling.
