Apparatus and method for controlling fuel system of vehicle

An apparatus for controlling a fuel system of a vehicle, the apparatus comprising:

• driving information detectors provided to detect vehicle driving information required to determine whether the vehicle is driving while fording water;
• a controller operably connected to the driving information detectors and provided to determine whether a current driving state of the vehicle satisfies predetermined water-fording driving conditions based on the vehicle driving information detected by the driving information detectors;
• a canister close valve provided on an atmospheric line between a canister and an atmospheric side;
• and
• a purge control solenoid valve provided on a purge line connecting the canister and an engine intake system,
• wherein, upon concluding that the current driving state of the vehicle satisfies the predetermined water-fording driving conditions, the controller is configured to conclude that the vehicle is in a water-fording driving state and output a control signal to seal the fuel system, and the canister close valve and the purge control solenoid valve are controlled to be in a closed state depending on the control signal to seal the fuel system, output by the controller.