17958 - Charge Pressure: Control Deviation

[DPJ]

Diesels aren't my thang, but friend of a friend asked my to put Vag-Com on

Passat with 137k miles, has no poke above 3000 rpm in 4th and 5th.

Address 01: Engine
Controller: 038 906 019 BJ
Component: 1,9l R4 EDC 0000SG 0812
Coding: 00002
Shop #: WSC 05311
1 Fault Found:
17958 - Charge Pressure: Control Deviation
P1550 - 08-10 - Control Limit Surpassed - Intermittent

VNT prob?

Thank you folks

 

[muddyboots]

http://wiki.ross-tech.com/index.php/17958/P1550/005456

Could be a number of things - boost leak, leaky vacuum pipes (quite common on Passats, I changed all the original braided rubber crap for silicon hosing, trouble is there's yards and yards of the stuff), sticky VNT mechanism, etc etc

 

[T. Spark]

As muddy has said really, normally (from what ive read up on the problem when I suffered from it) its the vains sticking on the VNT turbo.

If its a boost leak, you might be able to here the leak, under revs or load, so might be worth checking the pipes, and giving it a few rpm's with the bonnet up incase you hear/spot anything out of place.

 

[DPJ]

Thank you guys, much appreciated.

 

[asthpsw]

Isn't there a way that you can get the VNT vanes to cycle through its complete range while the engine is ticking over using VAG-com ?

 

[muddyboots]

Yes, but I can't remember how. The info is around somewhere, you'd have to dig it out with a search.

 

[asthpsw]

Re "we like people to do a search before doing pointless threads"...........I was making the point that it was possible to do that (for the sake of the guy that raised the original thread) it wasn't for me

 

[muddyboots]

Re "we like people to do a search before doing pointless threads"...........I was making the point that it was possible to do that (for the sake of the guy that raised the original thread) it wasn't for me

I wasn't trying to make a point about searching
Just agreeing that the procedure you suggested is possible but that I couldn't remember how.

 

[dmjw01]

Go into Measuring Groups, select Group 11, then click on "Basic Settings". Engine will fast-idle at about 1400 rpm and cycle the VNT mechanism every 10 seconds.

 

[DPJ]

Thanks for all the info guys. I know a bit about diesels now.

The guy whose car I vag-com-ed has decided to put a new turbo on.

 

[T. Spark]

Thanks for all the info guys. I know a bit about diesels now.

The guy whose car I vag-com-ed has decided to put a new turbo on.

Out of interest, what turbo is he going for?

 

[DPJ]

Out of interest, what turbo is he going for?

AFAIK, an oem replacement.

 

[muddyboots]

Could probably get a VT2 from Allard for similar money.....?

 

[T. Spark]

And if its not the turbo at fault it wont cure the problem...

 

[asthpsw]

I had this error & while car was having MOT I asked the garage to cycle the VNT Vanes using vag.com, this they did but they also manually did it using a spanner apparently & they found some resistance to the vanes springing back.................however they "exercised" the vanes using the spanner & it now works perfectly...more responsive & last night I took it on the M3 incline where I usually get the error code & limp mode and now its just accelarating well past the 2800RPM that the error used to occur.

Paul