What should I do if the exhaust fault light of the new Bora engine is on?

The exhaust fault light of the new Bora 28,000 km engine is on. The best answer: the question you asked is this: EGR is the exhaust gas recirculation system of the engine and belongs to the emission control system. If the related components of EGR system are damaged or work abnormally, it will definitely have a certain impact on the emission control system of the engine, and it is likely to light the fault indicator. If the 4S shop diagnoses that the EGR solenoid valve is damaged or has poor performance after inspection and needs to be replaced, then the damaged or invalid parts need to be replaced before the test run. According to the service time and mileage of your vehicle, it should still be under warranty, so the 4S shop can request to replace the EGR solenoid valve. In addition, although cleaning the intake, throttle, ternary, combustion chamber, fuel injector and other items is probably not directly related to the lighting of the fault lamp, relative to the working conditions of the engine, with the extension of the working time of the engine, a certain amount of carbon deposits will be generated in the above components, which will affect the working performance and state of the engine when the vehicle travels to about 30,000 to 40,000 kilometers, so it is necessary to clean and maintain the carbon deposits in the above components.