Fuel Level Sensor: Inspection

WARNING: This page is about a different car, the 2015 Subaru Outback and 2015 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.

Check that the fuel level sensor has no damage.

Measure the fuel level sensor float position.

NOTE: When inspecting the fuel level sensor, perform the work with the sensor installed to the fuel pump.

Fig 1: Measuring Fuel Level Sensor Float Position

Courtesy of SUBARU OF AMERICA, INC.

Float position	Standard
FULL to Fuel tank seating surface (A)	133.0±4 mm (5.236±0.157 in)
EMPTY to Fuel tank seating surface (B)	21.6±4 mm (0.850±0.157 in)

Check the resistance between fuel level sensor terminals by the connector on top of the fuel pump.

Fig 2: Checking Resistance Between Fuel Level Sensor Terminals

Courtesy of SUBARU OF AMERICA, INC.

Float position	Terminal No.	Standard
FULL (A)	1 and 4	8.7±1.0 Ω
EMPTY (B)	1 and 4	139.1±2.0 Ω