It may be the engine fault light on the instrument panel, indicating that the vehicle engine has failed. The engine fault light may be caused by supercharging, substandard exhaust emissions, blocked fuel injection nozzle, throttle position sensor, and some vehicle transmission system faults are also indicated by the engine fault light.
 The specific reasons are as follows:
 Problem: The sensor includes water temperature, crankshaft position, air air flow, intake air temperature, oxygen sensor, etc. When these sensors are damaged, poorly contacted or the signal is interrupted, the ECU of the car cannot accurately obtain the engine data, which will cause the engine fault light to light up. The sensor needs to be repaired at this time.
 Supercharging problem: The intake supercharging pipeline and turbocharger will also cause the engine fault lamp to light up. The most common one is turbocharger damage. At the same time, there will be oil leakage, high fuel consumption, reduced power, abnormal metal noise, blue smoke or black smoke from the exhaust pipe and other symptoms. The turbocharger needs repair at this time.
 Exhaust problem: rear oxygen sensor, three-way catalytic converter, exhaust camshaft, bearing bush. The most common fault is that the three-way catalytic converter causes the engine fault lamp to light up. The use of leaded gasoline, the use of lubricating oil additives containing lead or silicon, the collision of three-way catalytic converter, and the failure of engine oil supply system are all factors that are easy to lead to the failure of three-way catalytic converter. At this time, the three-way catalytic converter needs to be repaired.
 Anti theft system: if the car electronic anti-theft system fails, or the anti-theft controller does not match the engine electronic controller, the anti-theft system will also cause the engine to fail to work normally, and the engine fault lamp will light up. At this time, it is necessary to repair the car electronic anti-theft system.