What should I do if the fault light of the new LaCrosse engine turns on or off?

Obd emission regulations stipulate engine exhaust gas monitoring lights. It monitors the whole process from engine combustion to emission, and gives an alarm in time when there is a trend of unqualified emission. Among them, the throttle valve, the most important controller of mixed gas combustion, is also among them, and the throttle angle directly affects the emission degree. When there is carbon deposit on the throttle, it will cause jamming, so we need to clean it regularly.

The formation of carbon deposit has a great relationship with the cleanliness of the fuel we use, the characteristics of the driving area (traffic jam), air quality, oil maintenance and so on. Generally, the throttle valve of an electronically controlled vehicle should be cleaned regularly at 15000-20000km. Your previous cleaning mileage was too early, which is why I suggest you change to a gas station.

However, the throttle valve will remain normal for a period of time after cleaning, because the formation of carbon deposit requires a process. I suggest you check it, because the obd monitoring system not only monitors the throttle, but also has about 20 components. If they are unstable, it will also cause the monitoring lights to flicker.