Well that code means the IAC (Idle Air Control) valve on top of the throttle body is screwing up. No offense intended, but being you're g/f's car, has she ever changed the air filter? Usually the IAC screws up because it gets full of dirt. She may just need a new one, no biggy. Or you could take it off and blow in it to see if dirt falls out. Here's a pic, just so you know where it is. It's the blue thing the arrow is pointing to.
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60' ~ 2.1, 1/8 ~ 9.61 @ 73.4mph
Living one day at a time!