- Faulty fuel level sensor. The fuel level sensor is a device that measures the amount of fuel in the tank and sends a signal to the instrument cluster. If the sensor is faulty, it may send an incorrect signal to the cluster, causing it to read "empty" even when the tank is full.
- Faulty instrument cluster. The instrument cluster is the display that shows the fuel level, speedometer, and other information. If the cluster is faulty, it may not be able to receive or process the signal from the fuel level sensor, causing it to read "empty" even when the tank is full.
- Electrical problems. A loose or damaged wire could also cause the fuel level sensor to send an incorrect signal to the instrument cluster.
To troubleshoot the problem, you can try the following steps:
1. Check the fuel level sensor. Disconnect the fuel level sensor from the wiring harness and measure the resistance between the terminals. The resistance should be within the range specified in the repair manual. If the resistance is too high or too low, the sensor is faulty and needs to be replaced.
2. Check the instrument cluster. Turn the ignition key to the "On" position and check if the fuel level gauge moves. If the gauge does not move, the cluster is faulty and needs to be repaired or replaced.
3. Check the wiring. Inspect the wiring between the fuel level sensor and the instrument cluster for any loose or damaged connections. Repair or replace any damaged wiring as necessary.
If you are still not able to resolve the problem, you may need to take your car to a qualified mechanic for further diagnosis and repair.
