How To Fix "P0171" Code | EP-2 | Audi A4 | PCV Value Replacement #audia4

Purchase the part here: NewYall PCV Crankcase Vent Regulating Valve & Breather Gasket https://amzn.to/471G5qH This is a three part series on our 2008 Audi A4 - Check Engine Code P0171. In this Episode we install a new PCV value join us on this journey to see if this fixes the issue. This repair is on a 2008 Audi A4 2.0 Turbo, but other models will be similar. The P0171 code means that a vacuum leak exists near this side of the engine or there is a fuel delivery issue on the first bank of the engine. The first bank or bank 1 is usually located on the same side of the engine that contains cylinder number 1. A lean condition occurs when the engine either receives too little fuel or too much air. Thanks for watching! -Scout