Ford Repair: 1996 MUSTANG: failed emissions... P0174 OBD-II Trouble Code...System Too Lean (Bank 2), vacuum leak, diagnostic steps

Question
Hi. My sister has a 1996 MUSTANG GT V8 4.6 281. It failed emissions.  The technician indicated a "P0174 OBD-II Trouble Code...System Too Lean (Bank 2)". What does this mean? What might cause this problem?  What might be required to fix the problem? How much might it cost to repair?

Thank you,
Tom

Answer
I can't tell you specifically what is causing the code, there are diagnostic steps that must be taken to determine the cause. It could be a vacuum leak, misfire, wiring problem, sensor fault, or one of many other things. Cost depends on what the diagnosis finds.