Author Topic: Funky error  (Read 1454 times)

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B5_Alex

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Funky error
« on: June 28, 2005, 03:14:44 AM »
Hi Everyone,

I did all the searches and checked the forums, with no resolve so I decided to ask the RMCB5 collective one more time.
I keep getting the following error:




Control Module Part Number: 4B0 906 018 BG

  Component and/or Version: 1.8L R4/5VT     G   0006

           Software Coding: 07501

            Work Shop Code: WSC 00028

1 Fault Found:

17965 - Charge Pressure Control: Positive Deviation

        P1557 - 35-00 - -



.... the code is something about the N75 being "lazy" or simply overboosting and going into limp mode. It started happening recently and it hapens more and more often. I run GIAC 1.1 bar, silicone vacume lines and a Forge DV. According to my boost guage there are no leaks. I ran a log on 115 and here's what I came with. I highlighted where I thought it threw the error code. Here's the log: 115 log PDF

Any help or leads you can offer would be greatly appreciated. I am thinking something about a sticking wastegate.... :roll:

03Indigo

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Funky error
« Reply #1 on: June 28, 2005, 09:57:46 AM »
from the searches I just did, you are right, it points to the N75.  I could not find anything that showed where people ended up for solutions though, so I am not sure what to do from here.

I guess the simplest thing is to double check your hoses, then maybe replace the N75 and see what that turns up, and go from there?

Rocky Mountain Club B5

Funky error
« Reply #1 on: June 28, 2005, 09:57:46 AM »

B5_Alex

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Funky error
« Reply #2 on: June 28, 2005, 12:14:06 PM »
Quote from: "03Indigo"

I guess the simplest thing is to double check your hoses, then maybe replace the N75 and see what that turns up, and go from there?


I think you are right. And another thing .... the error happens mostly at about half throttle as the turbo spools up. The ECU sees deviation somewhere before max boost. I'll just keep digging. Has anyone ever heard of a faulty boost sensor (the one on the intercooler)? I would hate to drop the money for a new N75 and find out that it was not the problem. Weird ...

ianacole

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Funky error
« Reply #3 on: June 28, 2005, 01:09:19 PM »
Is it a stock N75?  If so, you can borrow mine to test...
"The corruption of man is followed by corruption of language." -Emerson

Think you're fast? http://www.rmsolo.org

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B5_Alex

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n75
« Reply #4 on: June 28, 2005, 01:14:11 PM »
yep it's stock. I don't see a reason to upgrade since I am already past the efficiency limits on my k03. Thanks for the offer I might take you up on that ...

ianacole

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Funky error
« Reply #5 on: June 28, 2005, 01:23:31 PM »
Just let me know...it's sitting on my parts bench, so you're welcome to use it for a bit.  I've kept it because their so fragile and I muck around in the engine so much that I like having a spare on hand lest I render my car inoperable for a couple of days (my wife would kill me).
"The corruption of man is followed by corruption of language." -Emerson

Think you're fast? http://www.rmsolo.org

For the road racer in all of us: http://www.nasarockymountain.com