why is my Skoda Octavia's fuel gauge not working properly?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical shock.
• Ensure the vehicle is on a flat surface and securely lifted if needed.

2. Remove the Fuel Sender Unit

• Locate the access panel for the fuel sender unit, typically found under the rear seat or in the trunk.
• Remove the panel by unscrewing the screws or clips.
• Disconnect the wiring harness connected to the fuel sender unit.
• Carefully unscrew and remove the fuel sender unit from the fuel tank.

3. Inspect and Test the Fuel Sender Unit

• Use a multimeter to measure the resistance of the fuel level sensor. Refer to the service manual for the correct resistance values.
• If the resistance is out of specification, replace the fuel sender unit.
• Inspect the float arm for any signs of damage or sticking.

4. Reinstall the Fuel Sender Unit

• If the sender unit is in good condition or has been replaced, carefully reinstall it back into the fuel tank.
• Ensure that the O-ring is seated correctly to prevent leaks.
• Reconnect the wiring harness securely.

5. Reassemble and Test

• Reattach the access panel and secure it with screws or clips.
• Reconnect the vehicle's battery.
• Start the vehicle and observe the fuel gauge operation.