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Engine fault light on: How to solve car fault When you are Advanced tariff classification toolsdriving, you suddenly see the engine light on, which may be an engine failure. The indicator light is usually like an engine icon and is one of the most common problem indicator lights on the vehicle dashboard. If the engine fault light is on, don't panic, because it doesn't necessarily mean that the engine is broken. You just need to take appropriate measures to solve the problem. In this article, we will introduce the reasons why the engine light may turn on and the appropriate solutions. The reason why the engine fault light turns on 1. Fuel evaporation control system fault fuel evaporation control system is a device that helps control vehicle fuel evaporation. When the fuel system leaks, there will be a problem.If the fault light comes on, you can check whether the fuel tank cover is tight or the burned fuel leakage evaporation pipe. Two. Air flow sensor failure Air flow sensor is a device that helps control the ratio between air and fuel. If there is a problem with your air flow sensor, your vehicle may be underpowered, the engine is speeding or even shut down. 3. Oxygen sensor failure Oxygen sensor helps to monitor the oxygen level during engine operation to help adjust the air/fuel ratio. If the fault light is on, there may be a problem with the oxygen sensor. You can check whether the sensor needs to be replaced. Four. Ignition system failure Ignition system is a device that helps to ignite fuel. If there is a problem with the ignition system, the engine may not start, or it may burn.Oil often does not burn completely, resulting in the fuel often emitting too much hydrocarbons and carbon monoxide, causing the detection system to false alarm. 5. Electronic control module failure The electronic control module is a device that controls the operation of the engine. If there is a failure of the electronic control module, the fault light may light up. How to solve engine failure If your engine fault light is on, don't panic, because it is not necessarily a big problem. You can try the following methods to solve the problem: 1. Check the fault code. If you have a diagnostic scanner, you can use it to check the engine fault code. The scanner will tell you what's wrong, which will help you determine when to take action. Two. Check the gasoline cap. If your gasoline cap is not tight, there may be a problem with the fuel evaporation system. After you find that the fault light is on, check the gasoline cover to make sure it is not loose.3. Check the battery connection. If the fault light is always on, you can check whether the battery connection is clean and make sure that they are not loose. At the same time, check whether the color of the battery terminal and terminal is normal. If they are gray or brown, the batteries may need to be replaced. Four. Check the fuse. After you find that the fault light is on, you can check the fuse. Check whether they are cracked, and if so, just replace them. In summary, the engine fault light may be a sign of a problem with the car, but there is no need to panic. When you find this situation, please take appropriate measures to solve the problem. Generally speaking, checking whether the fuel tank cap is fastened, replacing the components caused by the failure, and using diagnostic instruments and other tools for maintenance are all effective solutions. If you are not sure about the cause of the failure, please contact a professional auto repair technician for overhaul as soon as possible to avoid more serious consequences.

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