What does a faulty fuel sensor do?

A faulty fuel sensor can provide inaccurate readings of the fuel level in a vehicle's tank, leading to incorrect fuel gauge readings on the dashboard. This may cause drivers to underestimate or overestimate the amount of fuel available, potentially resulting in running out of fuel unexpectedly or unnecessary refueling. Additionally, it may trigger warning lights or error messages, complicating vehicle diagnostics. Overall, it affects the vehicle's efficiency and reliability.