It's actually my parents car, so not sure of all the specifics, but do know that it is stock (no mods). So I don't think it has a cold air intake, and no redlining

Hi All, About a month ago the check engine light came on. Used a friends scanner and determined it was error code po171 Too Lean (Bank 1). He reset it and off I went. The light came back on Thursday. Friend came over today and same code. The car seems to be running fine. The car is a 2005 Vibe non-t...