HELP!i threw a p0172 code. i looked it up and it says system too rich. does anyone know what could cause this? all i have is a k&n cone filter and greddy bov. ive never had any problems before it just happend today any help would be greatly appreciated thanks.

 

is the bov vented?

 

yes it is vented it is not recirc. i did a search and found that it may be the maf is dirty shich could be caused from oil based filters. so i think ill try cleaning that out and see how it does. as for the BOV i also noticed that at idle i hear a whistle coming from the BOV and i dont think its ever done that before. ive had the BOV for bout 4-5 months and never any problems before

 

a whistle??? ....... hmmm yea.. check your maf

 

yeah. could def be that.