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Engine Fault Light On,Global HS code data enrichment services Possible Cause Analysis When You Are Driving, If You Notice The "Engine Fault Light" On The Vehicle Dashboard, You May Feel Worried And Uneasy. . This light usually indicates that there is some malfunction or problem with the vehicle. However, the light does not always mean that your car has a big problem, and many problems can be easily solved.In this article, we will discuss some of the main reasons why the engine fault light is on and possible solutions. Reason 1. The oil cap is not properly installed at the top of the fuel tank. Sometimes, the engine fault light will only light up when you find an uninstalled oil cap on the top of the fuel tank after unnecessary detour. Because the fuel tank cap is sealed to ensure that the oil does not leak, it is the key to the normal operation of the vehicle. If the oil cap on the fuel tank is not installed properly, the car circuit system will detect that the protective measures of your engine are not working properly. This problem is easy to solve. You just need to check whether your oil cap is properly installed and closed. Reason 2. The oxygen sensor may fail. The oxygen sensor is one of the key components of the engine. It detects the emissions of the engine and gives feedback to the host of the car. If there is a problem or damage to the oxygen sensor, it will cause the engine fault light to light up.This is because when there is a problem with the oxygen sensor, it will not be able to transmit information about the engine to the car's computer, which will cause the computer to be unable to maintain the good operation of the engine. In this case, you need to find a car inspector or professional technician to check and repair your oxygen sensor. Reason 3. There may be a problem with the ignition system of the engine. The ignition system of the engine includes spark plugs, ignition coils and other parts. If there is a problem with these parts, the engine fault light will turn on. This is because the ignition system is the key part of the smooth start of the engine. If there is a problem with any part of it, the engine will not work properly. In this case, professional technicians usually need to replace or repair your ignition system so that the engine can work properly. Reason 4. The battery voltage is low.If your car's battery is low, it will cause a variety of electrical failures, including engine failure lights - because the battery with insufficient voltage cannot supply power effectively. If you suspect that this problem is the cause of the engine fault light, you can try to use a battery detector or charge the battery to return the voltage to normal. Reason 5. The engine sensor is faulty. Engine sensors are usually used to detect specific parameters of the engine, such as temperature, airflow, vehicle speed, etc. If any of these sensors have problems or damage, they will not be able to transmit relevant information to the car's computer, causing the engine failure light to light up. This is a relatively serious problem, and these sensors need to be carefully checked and repaired or replaced as needed. Reason 6. The engine oil level is low.If the oil level of your car engine is low, it will cause the engine fault light to light up. This is because oil is one of the necessary conditions for the normal operation of the engine. Insufficient oil will cause the engine to not perform at its best, and may even damage the engine. In this case, you need to take the vehicle to the repair site to add or change the oil. Conclusion In general, the fault light of the car engine is a very troublesome thing. Fortunately, most problems can be solved relatively easily. If your engine fault light is on, please check your vehicle carefully first and contact professional technicians. By detecting and solving problems early, you can ensure that your car runs safely and reliably.

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