Audi A4 B8/8.5 PCV valve replacement | Will it fix the persistent Check Engine Light & idle issues?

Audi A4 B8/8.5 Avant Sline with an idle issue and a persistent Check Engine Light. In this video I take you through the fix for this issue and the fault codes P2187 System too lean at idle bank 1 and P2779 Intake air system leak that threw up the CEL.
Good news is the new PCV valve Installation fixed the issues and restored my idle back to normal. The car drives great again and no more Check Engine Light.
I would highly recommend doing the PCV as part of the major service along with water pump, rear main seal and high pressure fuel pump, which are next on my list to change out on the car.
OEM positive crankcase ventilation / oil separator - Part numbers: 06H 103 495 AK (as seen in this video), 06H 103 495 AE & 06H 103 495 J (the part number of my original PCV unit replaced in this video)
Tools I used for this job;
Torx Bit Set via Amazon - geni.us/oFcXJ
Makita Cordless Drill via Amazon - geni.us/JFUG
Wera Flathead Screwdriver - geni.us/1HvbJU7
1/4” Ratchet via Amazon - geni.us/REX8i
3/8” Ratchet via Amazon - geni.us/7i46D
3/8” Screw Driver via Amazon - geni.us/D0mPUnj
Jack Stands via Amazon - geni.us/KZI2tD
Jack via Amazon - geni.us/qgpx7
Carista via Amazon - geni.us/037xQ6u
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