Help with vag-com fault code

[Garth_S3]

I've just been out checking my S3 for fault codes (it feels a little sluggish to me) with vag-com and came across this:

VAG-COM Version: Release 303.1

Control Module Part Number: 8N0 906 018 BP
Component and/or Version: 1.8L R4/5VT 0002
Software Coding: 10710
Work Shop Code: WSC 01236
Additional Info: WAUZZZ8L231211535 AUZ7Z0B2277602
1 Fault Found:
17956 - Boost Pressure Regulation Valve (N75): Open Circuit
P1548 - 35-00 - -

Anybody any idea what's up with the n75?

[davidhodgkinson]

Funny thing that, I've check my S3 tonight, thinking if feel's hesitant at times and i got the following


17695 - Boost Pressure Control Valve (N249): Open Circuit
P1287 - 35-10 - - - Intermittent

What could this one be? What's Valve N249?

[mnadeem1984]

i had the same error show up on my car? whats it all about? wot is this N249 valve?

[peteA3tdi]

the n75 valve opens and closes the waste gate on your turbo
and the n249 works the dv

[mnadeem1984]

so where is the n249 on a 1.8t a3 2000x plate?

[peteA3tdi]

take off the top plastic engine cover (3x 10mm nuts hold it on), you should see 4 coil packs on top of the engine in the middle of the cams and there should be a 5th box with vac pipes with one going to your dv thats your n249 (the box not the vac pipe)
hope this helps

[mnadeem1984]

so wot can be wrong with this? is it repairable? what should i change etc?

[PaulS3]

sometimes people find it unplugged, or leaks in pipes around the area or its just plain knackered and needs replacing.