Bumpdate. Compiling info hiyah for PCV parts on '04 1.8T AWM. Total online parts $109 including Y suction pump, plus another $5 or so for replacement clamps from hardware store.
Obvious forewarning: No guarantee this fixes all your issues with these codes, and work at your own risk - cut my hand up pretty decently just removing one-time clamps in the limited space.
No need to remove the intake manifold, you can reach everything if you move coolant tank out of the way and basically lay on the engine - reach everything with your right hand.
PCV parts list I ordered, click p/n for link:
#2: Plastic breather hose from oil filter bracket area - 06A 103 213 F
#3: O-ring for that breather hose - N 904 673 01
#5: Rubber t-housing - 06A 103 247
- Probably melted to metal pipe on opposite side of #2's connection, cut it out with razor blade/box cutter
#6A: PCV bleeder valve - 06B 103 245
(note this is out of stock atm, when I bought was $12.49)
#10: Rubber breather hose from bleeder valve to intake manifold - 06B 103 224C
2, 5, 6A and 10 is the whole line changed out. 7, 8, 11, 12, and 27 are simply one-time clamps you'll need to swap with similar sized screw-on clamps. Note hose 10 was still in good condition - I kept old one just in case it's ever needed. Also ordered:
#25: Check valve - 058 905 291K
- 2 count simply b/c I hadn't replaced all mine, was sure to use both
Not pictured in the diagram is Y suction pump, 058 133 753B
Borrowing from hatman's thread
, this pic has the Y suction pump - it's right beneath the only check valve in view and 3rd prong leads away from you. If you haven't replaced that check valve too, be sure to include in your check valve count:
Removing #2's retaining clip (aka #4)
: Need a really long flat-head screwdriver, coolant tank moved. You can see shape of the clip on side of hose when looking down through the manifold's holes. From that top angle, wedge long flat-head between clip and hose...perhaps grab edge of clip from the right with pliers (I tried doing just that without screwdriver, not enough leverage to pull it off). Unfortunately no good way to get a pic of this, very small hole for visibility from the top of manifold.
Suggestion: Only one-time clamp you absolutely have to remove from awkward angle is #8 on the right side of T going to metal pipe (opposite from #2). No need to remove #27 clamp, tough access - simply remove #28 on opposite side of that line, it's up above and much easier to maneuver. After #4 clip is removed, you can just remove entire line from 2 to 10 and install replacement line...why bother with more one-time clamps than you have to?
Hopefully that covers it, PM me with any questions and I'll help best I can. Note PZ finished this for me, I got clamp off t-housing going to metal pipe (opposite side of #2)...just didn't have long flat-head to remove #2's clip.