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What is OKX Wallet loginthe reason why the engine fault light is on? How to solve it? When you are driving a car, you may be a little panic when you suddenly find the engine fault light on. After all, this is a sign that the car has a problem. However, the engine fault light does not necessarily mean a serious problem. In this article, we will explain why the engine fault light is on and provide some solutions. What is the reason why the engine fault light is on? The engine fault light indicates that the electronic control system of the car has detected a fault outside the normal operating range. The light usually flashes or remains on to indicate the severity of the fault.There are different reasons why the engine fault light will turn on. Here are some common reasons: 1. Oxygen sensor failure: The oxygen sensor is responsible for detecting the oxygen content in the engine discharge. When the oxygen sensor fails, it is likely to cause the engine fault light to turn on. Two. Fuel evaporation system problem: The fuel evaporation system of automobiles is used to control the evaporation of automobile fuel to protect the environment. If there is a problem with the fuel evaporation system, it will cause the engine failure light to turn on. 3. Atmospheric pressure sensor failure: Atmospheric pressure sensor is used to detect environmental factors such as air quality, temperature and air pressure. If the atmospheric pressure sensor fails, the engine failure light will turn on. Four. Engine control module problem: The engine control module of the car is the brain of the car, controlling all the operation of the engine. If there is a problem with the engine control module, it will cause the engine fault light to turn on.5. Fixed memory problem: The fixed storage of the car stores mileage and other logs. If there is a problem with the fixed storage, the engine fault light will turn on. These are not the only reasons that may cause the engine failure light to turn on. Each model may have different reasons for this kind of failure. How to solve the problem of engine fault light? When the engine fault light comes on, you may not know what to do next. There are several ways to deal with this. The following are some possible reports: 1. Check the problem: After the engine fault light appears, you should start a detailed inspection immediately. If you don't want to check it yourself, you'd better find a repair shop to check your car. The repair shop can use the car diagnostic tool to determine the location of the problem. Once the problem is identified, appropriate measures can be taken to solve the problem.Two. Restart the vehicle: In some cases, after a short wait, restarting the vehicle may turn off the lights. This is because the engine fault light may just be a signal of a minor fault. This method is often seen for cars whose previous faults have been repaired. However, cars with this problem repeatedly may only alleviate the problem, which does not deny the existence of the problem. 3. Check the fuel cover: A very simple way is to check whether the car's fuel cover is properly locked, especially after refueling. If you accidentally forget to lock the fuel cover, the fault light may light up. Locking the fuel cover may help the car's engine electronic control system return to normal operation. Four. Check the fault code with the OBD-II automotive electronic diagnostic instrument: If you have purchased the OBD-II external diagnostic instrument, you can use it to check the fault code of the vehicle.The OBD-II external diagnostic instrument can read the fault code of the car, so you can know the specific cause of the fault. In some cases, you can clear the engine fault light by deleting the fault code. In summary, when the engine fault light is on, it is best not to panic too much before determining the cause of the problem. This problem may be just a small mistake, or it may be a major problem that needs to be solved in time. Be sure to handle it properly and don't ignore such alarms. Once the cause of the failure is determined, appropriate measures can be taken to solve the problem. Don't forget to maintain your car in time! Only in this way can your car run healthily for a long time.

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