Alberto v05

I got a P0174 code when i got it scanned code definition: fuel trim system lean bank 2, it all started last Thursday night after getting gas i forgot to close the gas cap all the way just twisted once as i drove off i got the service engine soon light came on but then i was told too screw it back right and It'll turn off and it did but then it turned back on days later so now i bought a new gas cap just installed and i also restarted the computer and bought a mass air flow cleaner spray to clean the mass air flow sensor need advice would i be okay to drive her tonight and maybe race or what? Thanks I'm really curious

JUSTINSWS6

Ya not a big deal code just need a little fuel trim tune if you have a handheld just go to the screen and and more fuel.