How to Solve the Malfunction Indicator Light Caused by the Three-Way Catalytic Converter?
3 Answers
The solutions for the malfunction indicator light caused by the three-way catalytic converter are as follows: 1. First, decode the car's computer. 2. If the light remains on after decoding, it indicates that the issue is not with the computer but likely a faulty oxygen sensor. In this case, visit a repair shop or 4S store to have professionals repair or replace the oxygen sensor. Below is an introduction on how to prevent three-way catalytic converter failures: 1. First, reduce idling time while driving, as prolonged idling increases the engine's internal temperature. The catalytic converter has a temperature limit, especially in summer when temperatures are already higher than usual, so be cautious and try not to idle for more than 10 minutes. 2. Second, avoid using leaded gasoline and oil additives, as they act like slow poison for the catalytic converter and will inevitably cause malfunctions over time. 3. Develop good driving habits. Since the catalytic converter is located under the car, drive carefully when encountering gravel roads or poor road conditions, and try to take detours if necessary. If the catalytic converter gets scraped by the road, it will inevitably be damaged.
Last time my car's warning light came on, the mechanic said it was the catalytic converter causing the trouble, which really gave me a headache. Later I found out this issue is often caused by a faulty oxygen sensor or a clogged catalytic converter – like using low-quality fuel or frequent short trips can lead to carbon buildup blocking it. I'll first use an OBD scanner to read the trouble codes and confirm the exact cause. If it's just a minor issue, I might try cleaning the converter or using a professional cleaner while taking a few highway runs. But if the converter is cracked or completely failed, replacement is the only option; otherwise, the engine might emit black smoke and suffer from power loss. To avoid trouble, I now insist on using 95-octane fuel and regularly taking highway drives to keep the exhaust system clean, which helps prevent clogging. Don't delay when you spot problems – get them checked and handled promptly at a professional shop to prevent engine damage or fines for excessive emissions.
When the malfunction indicator light comes on indicating a catalytic converter issue, I consider it quite serious. The converter is responsible for purifying exhaust gases. If it's clogged or damaged, the vehicle will emit excessive harmful emissions and may cause engine overheating or damage other components. I would immediately check the trouble codes to rule out oxygen sensor problems. If the catalytic converter itself is faulty, the causes are usually poor fuel quality or prolonged idling. First, I'd try using an OBD tool to monitor data streams or take a highway drive to see if carbon deposits can be cleared. But if the issue persists, it's essential to promptly visit a professional repair shop for replacement, otherwise breaking down on the road could be dangerous. For prevention, I make sure to regularly maintain the engine and fuel system, such as changing the air filter and using high-octane gasoline, to help avoid such failures.
