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> 17608 - Boost Pressure Control Valve
Bohall
post Oct 25 2007, 12:50 PM
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Just got a Vag-Com done on the car and it came up with 17608 - boost pressure control valve mechanical malfunction. It was cleared and hasn't come back up since....

Any body have any info on this by any chance? Would this be the N75 valve or is that different entirely?

Car is on 01 Golf GTi 1.8T AUM
Cheers folks. (IMG:style_emoticons/default/smile.gif)
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Geo
post Oct 25 2007, 01:01 PM
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It's the N249 valve, different to the N75. I think it allows the ECU to activate the dump valve if it wants/needs to.


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Trevor
post Oct 25 2007, 01:38 PM
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Yeah seen this before on a 1.8T

Thursday,11,October,2007,18:26:56:61362
VAG-COM Version: Release 704.1

Address 01: Engine
Control Module Part Number: 8N0 906 018 BH
Component and/or Version: 1.8L R4/5VT 0001
Software Coding: 10710
Work Shop Code: WSC 68***
Additional Info: *****************************
1 Fault Found:

17608 - Boost Pressure Control Valve (N249): Mechanical Malfunction
P1200 - 35-00 - -

Readiness: 0110 0101

Sorted by replacing the valve with a good secondhand one.


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Bohall
post Oct 25 2007, 02:28 PM
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Excellent stuff Trevor and George........ It's cleared and not come back up so we'll see what happens.
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Bohall
post Nov 13 2007, 11:27 AM
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Just been on to the main stealer about this, apparently there are 2 solonoid changeover valves that this could be apparently. The N249 means nothing to the parts man unfortunately.

Any way of finding out part numbers on the N249 valve or is it a case of replacing the 2 solonoid changeover valves?

Thanks for the help folks.
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Geo
post Nov 13 2007, 11:42 AM
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I'd say by the 2 valves he means the N75 and the N249. Does he have part numbers for the 2? If so then one should be something like 058 906 283 F (or some other letter) That's the N75, it's the other one you need.

Are you sure you need to change the valve? Did you do another scan to see if the code came back?

Found this part number at this link:

N249 (Diverter Valve Solenoid)
028 906 283N


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Bohall
post Nov 13 2007, 11:47 AM
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Cheers lads.

Havent done another scan yet but the boost is still fading in and out. Done a bit of reading on the net and it could be my aftermarket dump valve.

See link: http://wwwx.cs.unc.edu/~nashel/cgi-bin/per...cars/index.html

Apparently if theres a problem with the valve itself it'll throw up an electronical error and not a mechanical.

From Vortex:-> N249 valve runs about $180 at the dealer. It's the solenoid that triggers the vacuum signal for the DV, just as the N75 solenoid does the same for the wastegate. If you get a malfunction that says "N249...MECHANICAL...", the wisdom of the list says that it's usually a problem with the DV, not the solenoid. Malfunctions that show an ELECTRICAL cause are usually indicative of a bad solenoid. Or so they say.

What am i going to do? Replace aftermarket DV with OEM one thats in the boot, get it scanned and clear the faults and see if they come up again. Then back to the mapper to get it smoothened out!

I'll get back onto the main stealer and see if i can get part numbers...
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Geo
post Nov 13 2007, 11:49 AM
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Boost fading in and out sounds like the N75 to be honest. When I changed the N75 on my A4 it was a different car afterwards.


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thos
post Nov 13 2007, 11:53 AM
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I'd be checking all the hoses before ordering a valve. A few of the hoses on my Cupra were causing problems before I got them sorted.

I think there's an N112 with the N249, so that's the two valves. They should be located under the second enginer cover, ie; the bit at the front of the inlet manifold, there's a couple of bolts holding it on. Here's a diagram, to help you find them (17, 18)

(IMG:http://memimage.cardomain.net/member_images/5/web/2249000-2249999/2249653_1_full.jpg)

A bit slow on that response, bit if the boost is fading in/out, then as I said, I'd go checking every hose before ordering anything. And not just the major boost hoses, every little vacuum hose. You'd be surprised at what can cause you problems. I traced a problem back to an oil breather hose on the cam cover, and another smaller vacuum hose on the underside of the intake manifold. (This was after forking out for N75, DV, Temp Sensor ........, so I learnt the hard way).

If you want to try swapping a healthy N75 in, just give me a shout and I'll give you a dig out.
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Bohall
post Nov 13 2007, 12:02 PM
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Right click and Save as, cheers Tom. The boost fading in and out could be caused by the map and a leak/faulty valve....

I was going to upgrade the N75 to one off a 225 TT alright as discussed at length on other forums.

I'll have a butchers on Saturday as theres no light in the evenings anymore.

Thanks lads.
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thos
post Nov 13 2007, 12:07 PM
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Not worth your while messing with N75's, just stick with what's it's supposed to be. Probably an 'F' for your car.
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Trevor
post Nov 13 2007, 12:19 PM
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And who said that there wasn't a bunch of helpful guys on here last week? (IMG:style_emoticons/default/laugh.gif)


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Bohall
post Nov 13 2007, 12:21 PM
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lol - I know! I think i've used the right amount of please and thank you's though, and bribary of pints....

Thank you please!
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liamO
post Nov 13 2007, 02:00 PM
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i had a look on the Ross Tech site and found this about the second fault i found . If it was my car i would be checking the hoses first as Thos said . Hope this helps .

17705/P1297/004759
From Ross-Tech Wiki
Jump to: navigation, search
Contents [hide]
1 17705/P1297 - Pressure Drop between Turbo and Throttle Valve (check D.V.!)
1.1 Possible Symptoms
1.2 Possible Causes
1.3 Possible Solutions
1.4 Special Notes


17705/P1297 - Pressure Drop between Turbo and Throttle Valve (check D.V.!)
Possible Symptoms
Power Loss
Possible Causes
Leaking hoses and/or pipes between components
Check Boost Pressure Control Valve (N249)
Possible Solutions
Check hoses and/or pipes between components
Check / Replace Boost Pressure Control Valve (N249)
Check / clean Throttle Valve, do Throttle Body Alignment
Special Notes
Did anyone fitted an extra (wrong) dump valve?
Retrieved from "http://wiki.ross-tech.com/index.php/17705/P1297/004759"
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Bohall
post Nov 13 2007, 02:03 PM
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Thanks Liam, Had a look on that site, loads of answers.

Cheers.
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