What Causes Inaccurate Car Fuel Gauge Readings?

1 Answers
McAmara
07/29/25 11:58pm
Car fuel gauge inaccuracy may result from: 1. Poor contact or severe wear of the fuel level sensor's sliding resistor; 2. Abnormal instrument circuit or loose/aged electrical components; 3. Fuel tank deformation or bracket abnormality; 4. Loose connections or open circuits within the engine control module; 5. Loose grounding wires for the fuel level sensor or fuel pump wiring harness. The fuel gauge indicates the remaining fuel quantity in the tank, which may be displayed via analog pointer or digital readout. Composed of a stabilized fuel level indicator and level sensor, its primary function is to illuminate a warning when fuel drops below a specified threshold, alerting the driver.
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