Code P0171 - System Too Lean: Symptoms, causes, common problems, diagnostic
VW Golf 5 1.6 petrol how to reset engine fault codes 16555, P0171 change O2 sensor? maybe, but? - YouTube
P0171 system too lean bank 1 troubleshooting | VW Vortex - Volkswagen Forum
P0171 solved | VW Vortex - Volkswagen Forum
VW Golf mk5 1.6L Can anyone explain where the MAF sensor is? I got a P0171 code and was advised to check out the MAF sensor. I thought it was supposed to
P0171 System Too Lean Bank 1 | Przyczyny błędu, Opis naprawy