* Faulty Fuel Level Sensor: This is the most common culprit. The sensor in your fuel tank measures the fuel level and sends a signal to the dashboard. If the sensor is malfunctioning, it might not accurately register the amount of fuel in the tank. This could be due to a faulty sensor itself, a wiring problem to the sensor, or even corrosion in the connector.
* Low Fuel Sensor Wiring: A break, short, or corrosion in the wiring between the fuel level sensor and the instrument cluster can prevent accurate fuel level readings and keep the light on.
* Faulty Instrument Cluster: While less likely, a problem with the instrument cluster itself (the part of your dashboard that displays the fuel gauge) could prevent it from correctly interpreting the signal from the fuel level sensor.
* Air in the Fuel Line: While less common, air in the fuel line can sometimes interfere with the fuel level sensor's readings, leading to an inaccurate fuel level display.
* Calibration Issue: Less likely, but sometimes the fuel gauge needs recalibrating. This is usually done by a mechanic with diagnostic equipment.
What to do:
1. Check the Fuel Gauge: Does the gauge needle move at all when you fill up? If it barely moves or stays at the same low level, then the sensor or wiring is likely the problem. If it moves, but doesn't quite reach "full," the float may be slightly off in the fuel tank.
2. Check the Obvious: Make sure the fuel cap is properly tightened. A loose cap can sometimes disrupt the sensor readings.
3. Try a Different Gas Station: In rare cases, a faulty gas pump could give you an inaccurate reading. Fill up at a different station to rule this out.
4. Professional Diagnosis: If the problem persists, take your Transit to a Ford mechanic or a trusted auto repair shop. They have the diagnostic equipment to accurately pinpoint the fault, whether it's a faulty sensor, wiring issue, or a problem with the instrument cluster. They can also check for air in the fuel lines.
Ignoring the problem could lead to running out of fuel unexpectedly, so it's best to have it checked out soon.
