I have a '01 Beetle Sport with a 1.8T. I am getting a P0171 code. I repaired the cracked power brake booster line and the cracked/soft PCV line. I have checked for other vacuum leaks with a hose attached to a stethiscope. The only thing that shows up is a pressure leak where the PCV line attaches to the lower block (I can hear pulsing from this area). Would this be enough to set a P0171 code?