What are the reasons for inaccurate fuel gauge readings when the car's fuel tank is full?

1 Answers
Pete
07/30/25 8:50am
The reasons for inaccurate fuel gauge readings when the car's fuel tank is full are: 1. Faulty fuel gauge pointer; 2. Damaged fuel level sensor; 3. Broken linkage between the fuel level sensor and float; 4. Contamination on the fuel level sensor; 5. Open circuit or poor connection in the wiring from the fuel level sensor to the ECU; 6. Poor contact or severe wear in the sliding resistor of the fuel position sensor; 7. Abnormal instrument circuit or loose/aged electrical components. The solutions for inaccurate fuel gauge readings are: 1. Regularly inspect and replace the fuel gauge; 2. Adjust the fuel gauge using the air pressure regulation method; 3. Replace the fuel level sensor. The fuel gauge is a device on the fuel tank that indicates the amount of fuel remaining, displaying the available fuel quantity in the car and helping to estimate the remaining driving distance in kilometers.
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