Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2016 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE
Fuel Sub Level Sensor: Inspection
WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.
- Check that the fuel sub level sensor has no damage.
- Check the fuel sub level sensor float position.
Float position Standard FULL - Fuel sub level sensor seating surface H1 140.6 - 149.6 mm (5.536 - 5.89 in) EMPTY - Fuel sub level sensor seating surface H2 10.1 - 19.1 mm (0.398 - 0.752 in) - Check the resistance between fuel sub level sensor terminals by the connector on top of the fuel sub level sensor.
Float position Terminal No. Standard FULL (A) 1 - 2 7.7 - 9.7 Ξ© EMPTY (B) 174.6 - 178.6 Ξ©
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.