Roewe RX5 failed to catch fire twice, and the engine fault light came on. What is the reason?

The engine fault light is sometimes a false fault and can continue to be on. The key is to see if you can tell the difference. There are many reasons for the engine to turn on the fault light, such as the failure of the purification solenoid valve to control the fuel vapor emission, the failure of the air flowmeter, the failure of the ignition coil, the failure of the thermostat, the failure of the three-way catalyst, the failure of the oxygen sensor, and the excessive carbon deposition in the electronic throttle. Among many reasons, emission failures and unaffected operation failures account for a large proportion. Unqualified emission: 1, poor gasoline quality, resulting in unqualified emission detection; 2. The local air quality is not good, and carbon deposits are formed prematurely; 3. The oxygen sensor is damaged; 4, spark plug or nozzle failure leads to insufficient combustion and so on. Uninfluenced operation fault: 1, the fuel tank cover is not properly covered; 2. After the throttle valve was cleaned, the computer did not clear the code; 3. After modification or maintenance, the plug is not tightly plugged; 4, inexplicably bright engine fault lights and so on. The above situation does not affect the driving of the car. If it is an emission fault, the mixture is not fully burned and the power is slightly insufficient. However, if it is an operation fault with no influence, it has little or no influence on driving. The above faults can be easily eliminated by computer detection. Some parts need to be replaced or cleaned, and some parts only need to clear the fault code. There are still some engine trouble lights on. Leave it alone, and it will disappear automatically if you open it. When some vehicles have this kind of fault, you can turn on the power supply by inserting the key, instead of going to the step of self-checking the light, then stepping on the accelerator, then turning off the power supply, and then directly starting to eliminate the light fault. The engine is on, so you can observe for yourself. If it is a major fault, it will be accompanied by engine weakness, large jitter, high water temperature and multiple fault lights on the dashboard. At this time, you need to stop the car and wait for professional rescue. If only the engine fault light is turned on, the rest are normal, so don't worry about running for a while, some will be eliminated automatically. If it has not been eliminated, you can drive yourself to the maintenance site to solve it.