I conducted a check on my daughter's car ODB. The code P1401 showed up. It indicated short circuit, fuel leakage indicator etc. dealing w/ the fuel tank system. The reason I did the check is because 1) her check ingine light is on and won't go off. 2) her fuel tank will never indicate the correct amount of gas (show empty and still be 1/2 full). I have a couple of questions if someone point me in the right direction. If a can fix the problem, how do i first approach it and what could be the REAL cause of this code (maybe a couple of suggestions on how it can be fixed)? I appreciate any help or input on this problem.