how to fix Honda Civic 9th Generation (2012-2015) that has a malfunctioning fuel gauge

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the vehicle's battery to prevent electrical shorts.
• Ensure the fuel tank is less than half full to minimize spillage when accessing the fuel pump.

2. Access the Fuel Pump Assembly

• Tools Required: Socket set, screwdrivers, safety glasses, gloves
• Remove the rear seat cushion or trunk panel (depending on the vehicle configuration) to access the fuel pump assembly.
• Disconnect the electrical connectors and fuel lines from the fuel pump. Use caution to prevent fuel spillage.

3. Remove and Inspect the Fuel Level Sensor

• Unbolt the fuel pump assembly from the tank.
• Carefully lift the assembly out of the tank, ensuring not to damage the fuel sender arm.
• Inspect the fuel level sensor for any physical damage or signs of wear.

4. Test the Fuel Level Sensor

• Use a multimeter to measure the resistance of the fuel level sensor.
• The resistance should change smoothly as the float moves. If it is stuck or shows infinite resistance, the sensor needs replacement.

5. Replace the Fuel Level Sensor

• If faulty, replace the fuel level sensor with a new part.
• Reinstall the fuel pump assembly into the fuel tank, ensuring a proper seal.
• Reconnect the fuel lines and electrical connectors, making sure they are secure.

6. Reassemble and Test

• Reinstall the rear seat cushion or trunk panel.
• Reconnect the vehicle's battery.
• Start the vehicle and observe the fuel gauge for proper function.