Fuel level sensor open circuit, or short circuit to battery.
â–¶ How to fix
• Check wiring (to fuel level sensor) • Check connectors (to fuel level sensor) • Check fuel level sensor • Check the mechanical function of the fuel level sensor. • Measure the sensor voltage between signal and ground.
What you'll see
No driver-visible symptom recorded.
System reaction
Fuel level gauge shows empty fuel tank (as long as the fault is present).
Diagnostic depth
Detection
Impermissible signal from the main fuel level sensor (located close to the middle of the fuel tank). The sensor voltage level is too high. The fuel level sensor has an open circuit, or is short-circuited to battery.
Possible cause
• Defect wiring - open circuit - short circuit to supply voltage • Defect connectors • Defect fuel level sensor