Concorde Check Engine Light (running lean)

Hey guys. I have a 96 Chrysler Concorde LXI (3.5L). I've had the car for about 2 weeks and a couple days ago, the check engine light came on. I disconnected the battery to reset it (there was quite a bit of corrosion on it so I was planning on doing that anyways). The light was off next time I started the car. I had a one hour drive the following day and the light stayed off the entire trip until I had to stop for a train and then it popped back on. So I took it to Advance Auto yesterday to have them hook it up and let me know what's wrong with it. I can't remember the exact code it gave (paper's at home and I'm at work), but it said the engine's running lean and it should be properly diagnosed by a mechanic. Has anyone else run into this? Do you think tossing some fuel injector cleaner in the tank next time I fill up will do the trick or is it more serious than that? Thanks for the help!

nope   U have an issue that could be any where from 1 to 20 different items  and that code is just a general issue  it wont say anything about whast wrong. U will need to take it to some one.
I live in the Atlanta area if u would like I can look at this for you.

Tell me if code was p0174.