What causes the engine failure light to suddenly come on are as follows:
1. The combustion condition of the engine is not good, the engine has an explosion, the fuel quality is poor, the engine is not clean, the carbon deposit is deposited, if it is not treated in time, it will cause a series of problems, such as the combustion chamber temperature rises, the wear increases, the fuel consumption rises, and even the early failure of the engine will occur, which will eventually lead to the deterioration of the exhaust gas quality and pollute the environment.
2. The quality of the fuel is very poor. Many riders will have this feeling when they see the fault light of the engine: after filling a tank of gasoline, the fault light of the engine will suddenly light up. The engine has great requirements for the quality of the oil, and with the technical standards of various countries, the requirements for the engine are getting higher and higher. In reality, because some gas stations cannot provide fuel that meets the requirements according to the requirements of the standard, the engine failure light is lit.
3. Solution: Clean the entire fuel system with fuel additives; add higher-grade gasoline after completing engine cleaning; use high-quality fuel additives to increase the cleanliness of fuel; replace the three-way catalytic converter.
4. Two oxygen sensors are mounted on the vehicle, one in front of and behind the ternary catalytic converter. The front lambda sensor is mainly used to monitor the air-fuel ratio of the engine under different conditions, and the ECU uses this signal to adjust the fuel injection and ignition time. The people in the back are checking the quality of the three-way catalytic converter! Therefore, if the oxygen sensor is damaged, or the sensor plug is loose, it will cause thinness and concentration of gas, so that the fault light of the engine is lit.
extend. When the fault light of the engine is lit, in order to protect the engine, it should be stopped immediately. If you continue like this, the engine will be damaged. While automotive production technology advances, nothing will happen to the engine itself. Around the engine, there are a large number of sensors and electronics, as well as some key parts.