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What to do Arena Plus loginif the engine fault light keeps on? - How to solve the problem of the engine fault light that keeps on the engine fault light on the car is a very important indicator light. When the light comes on, it indicates that there is a problem with some systems in the engine.This may be a small problem, but it may also be a big problem that needs to be solved immediately. If the engine fault light is always on, it may affect the driving performance and reliability of the vehicle. In this article, we will discuss the reason why the engine fault light keeps on and how to solve this problem. 1. What is an engine fault light? First, let's talk about what the engine fault light is. In modern cars, the engine fault light is generally located on the dashboard. The indicator light consists of a set of electronic sensors, control units and detection systems, which are used to monitor various systems of the vehicle. If there is a problem with any of these systems, the fault light will turn on to remind the driver to check whether the vehicle needs to be repaired. Two. Common reasons for the appearance of engine fault lights There are many reasons why engine fault lights can appear. The following are some of the common reasons.(1) Oxygen sensor failure: Oxygen sensor is a small sensor in the engine, which is used to monitor the exhaust volume of the engine. If the oxygen sensor fails, it may cause the fault light to turn on. ( 2) Fuel system problems: Any problems in the fuel system may cause the fault light to turn on. For example, fuel pump failure, fuel injection system failure, insufficient fuel pressure, etc. ( 3) Exhaust system problems: Failures in the exhaust system may also cause the fault light to turn on. For example, sensor failure in the exhaust pipe, failure of the exhaust gas recycling system, etc. ( 4) Electronic system problems: Any failure in the electronic system in the vehicle may cause the fault light to light up. For example, electronic control unit failure, circuit problems, etc. 3. How to troubleshoot? When the engine fault light is always on, appropriate measures need to be taken in time to solve this problem.Here are some common ways to solve this problem. ( 1) Check the car manual: First of all, you should check the car manual to understand the type of problem that the fault light may indicate. ( 2) Check the vehicle code: If the engine fault light is on, the vehicle code can be read through professional instruments. These codes can help determine the type of problem that causes the fault light to light up. ( 3) Check the sensor: If the sensor fails, it may be one of the reasons why the fault light turns on. Checking and replacing the faulty sensor may solve this problem. ( 4) Check the fuel system: If there is a problem with the fuel system, it may be one of the reasons why the fault light turns on. It is necessary to check the fuel pump, fuel filter, fuel line, etc. ( 5) Check the discharge system: Failure in the discharge system may also cause the fault light to turn on.It is necessary to check whether the exhaust pipe failure, exhaust gas recycling system and other parts are faulty. ( 6) Check the electronic system: check whether the electronic control unit and circuit of the vehicle are faulty, etc. Four. Prevent the engine fault light from turning on. In order to avoid the engine fault light from turning on and solve the problem in time when a fault occurs, the following preventive measures are recommended. ( 1) Regular vehicle maintenance: Regular vehicle maintenance is the key to preventing faults. For example, replace oil, brake pads, air filters, etc. ( 2) Maintenance according to the recommendations of the vehicle manufacturer: The vehicle manufacturer provides some suggestions for the vehicle, such as the timing of replacing parts, the frequency of maintenance, etc. Maintenance according to these suggestions can ensure the normal operation of the vehicle. ( 3) Avoid harsh road conditions: Avoid driving in harsh road conditions, such as driving in deep water, muddy or large-scale potholes.In a word, when the engine fault light is always on, it is necessary to actively find the root cause of the problem and solve the problem in time. In addition, regular vehicle maintenance is also the key to preventing the engine fault light from turning on.

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