[Biturbos4] decoding codes

[Rich Shiba]

Yep, the car is chipped, MTM.  Forge exhaust, but otherwise stock.

I've got an APR y-pipe and new 993 BPVs that i'm set to install.
Will that end up covering all the clamps you're suggesting in step 3
or are there others (not too familiar with the intake routing yet).

Is the stock TBB ok with this setup or should i be looking at something
beefier?

Thanks everyone,

       -rich



On Thu, 11 Nov 2004, Michael Benno wrote:

> The fuel trim codes are indicators there is a boost leak. The ECU compenstates the fuel mixture to deal with the differences between what the MAF is forcasting for mixture and what the O2 sensors are indicating for results. The difference in fuel trim is cause by the amound air missing (leaking) from the system.
>  
> Given that the error codes are on both cyclinder banks, is more evidence that it is air rather than a bad injector(s) in on bank.
>  
> Have you checked for boost leaks yet? 1. REMOVE and inspect the TBB, 2 REMOVE and test BBV's. 3. Reomove and re-clamp accessable intake pipes. 4. Get a pressue test (see ECS tuning). 
>  
> If you have VAGcom, clear the codes after 1,2,and 3. If you are still seeing the codes then do step 4. I have herd that the inlet pipe connections on the turbos sometimes need to be reseated. Or the endcaps on your turbo's could be leaking. 
>  
> Again, are you chipped, if so what pressure is the max bar for that chip?
> 
> 
> j y <jimnetpa at yahoo.com> wrote:
> Question #1 - Is your S4 chipped? - DTC 17965 usually occurs when your car is chipped and is putting more pressure on the turbos. It also appears when boost leaks are present. Check your throttle body boot for cracks and the DVs for proper operation. Replace if necessary. 
> 
> In time, u will get the "positive deviation" DTC along with 17965. Since u have these codes it appears that u have a VAG scan tool. Did u buy it legally thru Ross-Tech? If so, contact them and purchase the Bentley manual for Audi cars. The explanation to these codes is found there. The Bentley CD (thru Ross-Tech) is $70 (USD). Well worth the $$$. 
> 
> Also, go to the AudiWorld website. Do a "search" on the DTC code that you are referencing here. You will find that MANY S4 owners (who post to the Bd) have experienced this DTC, including myself. 
> 
> Good Luck.
> 
> 
> Rich Shiba wrote:
> Hey everybody,
> 
> Another "help me decode my codes" email...
> 
> Got an intermittent check engine light and following codes :
> 
> 17535 p1127 : long term fuel trim multi bank 1
> 17537 p1129 : long term fuel trim multi bank 2
> 
> 17965 P1557 : charge pressure control
> 
> Anyone know what these mean in English?
> 
> 
> 
> And on other threads that've gone by recently :
> 
> My (Audi OEM) battery died after about 3 years and it'd never
> been discharged abnormally (lights left on, whatever). I drive
> the car every day and one day it just wouldn't even turn over.
> Jumped it to get home, next morning same thing. I thought for
> sure something was shorting it, but nope. Just a dead batt.
> 
> Sumitomo HTR+ : i'm running these tires now and they're fine/good.
> Not super sticky by any means, but they wear pretty well (i got
> over 20k on my last set), stick ok in dry, are fairly good in snow
> and don't cost an arm and a leg. I find them to be good (but not
> great) at a lot of different things. A compromise tire.
> 
> Also, just installed an AutoSpeed DTS. Was wondering if i'd feel
> the difference and i definitely do. Sudden acclerations or
> decellerations definitely feel much more immediate and solid. That
> kinda loose 'coasting' feeling while the drivetrain moves is much
> improved/eliminated.
> 
> Thanks!
> 
> 
> -rich
> 
> 
> 
> 
> 
> _______________________________________________
> Biturbos4 mailing list
> Biturbos4 at www.audifans.com
> http://www.audifans.com/mailman/listinfo/biturbos4
> 
> 
> ---------------------------------
> Do you Yahoo!?
> Check out the new Yahoo! Front Page. www.yahoo.com
> _______________________________________________
> Biturbos4 mailing list
> Biturbos4 at www.audifans.com
> http://www.audifans.com/mailman/listinfo/biturbos4
> 
> 			
> ---------------------------------
> Do you Yahoo!?
>  Check out the new Yahoo! Front Page. www.yahoo.com

--