Diagnostic Trouble Codes
 

I don't know much about maintaining a vehicle so I'm trying to learn a lot about the new performance machine called Sally I just got. 2007 Mustang GT/CS that has been modified. Recently, my check engine light came on. I plugged in the SCT X3 Tuner and received the error codes P0171 and P0131. I've researched what these codes mean and the strategy code I receive it FPAF0A3. Are there notice instructions that can help me resolve the issue or should I take it in? I don't want to screw anything up, but I'm trying to self serve as much as possible. Thought?

MustangSally07
Ride it fast and loud