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what should I do if fuel level sensor malfunctions

The key to accurately diagnosing faults. Nowadays, cars use electronic controlled engines, with many sensors to detect the engine's operating conditions and then feed back the signals to the computer. After the computer analyzes and compares them , it controls the injection, ignition, and intake of air. If there is a problem with each sensor in the engine , the computer will report a fault code to remind the owner that the engine needs to be tested and repaired. Therefore , we need to identify the cause of this fault, There are often several reasons for this, for reference only: 1. Sensor damage , poor contact, or signal interruption; 2. Poor engine maintenance; 3. Poor quality of fuel and engine oil; 4. Insufficient combustion of the mixture; 5. Spark plug failure, ignition coil failure; 6. Fuel pump malfunction, blocked fuel circuit ; 7. The air conditioning filter is blocked. 

The specific situation analysis is as follows:; 1. Sensor issues; The sensors mentioned here include water temperature, crankshaft position, air flow rate, intake temperature, oxygen sensors, etc. When these sensors are damaged, have poor contact or signal interruption, the car's ECU cannot accurately obtain engine data, which will cause the engine malfunction light to light up. 2. Maintenance issues; Poor engine maintenance is the most common cause of engine malfunction lighting. We know that vehicles have a certain maintenance cycle. If the owner does not maintain them on schedule, coupled with poor driving habits, it will increase the burden on the engine operation. Ultimately, the fault light can only remind you to care about your car. 3. Oil quality issues; The oil quality mentioned here includes fuel and engine oil. We know that the fuel used in cars is usually labeled, and engine oil can also be semi synthetic or fully synthetic. Manufacturers generally recommend which label of fuel and type of engine oil to use for car owners. If car owners do not add it according to requirements, it will cause engine wear in the long run, so it is not surprising that the fault light is on. Poor combustion of the mixture . When the engine is burning, it needs to intake air. During this process, the air filter is very important. If the car's air filter is not clean and not cleaned regularly, it will affect the car's intake air. 

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