Go Back   AudiWorld Forums > Audi Models > Audi S4 / RS4 > S4 / RS4 (B5 Platform) Discussion
Sign in using an external account
Register Forgot Password?


S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread Display Modes
Old 07-28-2014, 12:13 PM   #11
AudiWorld Member
Account #: 207990
 
Join Date: Feb 2011
Posts: 107
Default

Hey I tried this, disconnected the downstream sensors and I got codes

P1122, P1118 - bank1/2 sensor 2 open circuit and P1114,P1140 Bank1/2 sensor 2 internal resistance is too high. I expected the first codes but not the second two.

The running rich codes still came on right away. I want to say the car ran better when I disconnected the downstream sensors. I did not see the code for the MAF - internal resistance too high P0103 but it usually takes a couple days to come on.

I think there is a vacuum leak (or pressure leak this system is pressurized?) that is causing this and I do not know if there is something else like the fuel injectors contributing. I sometimes smell a burn smell in the car.

Appointment tomorrow with the stealership. I am telling them to either inspect my car or give me all my money back and I will pay for the spark plugs they put in. I had it with them they are supposed to be audi experts they are crap.

Quote:
Originally Posted by Flyboy View Post
The secondary O2 sensors are also able to affect the reported AFR. If they are reading incorrectly that might be causing the ECU to run rich.

Possibly try disconnecting the secondary o2 sensors, clear the codes and see what happens. You'll probably throw a cat efficiency fault code, but it might give you another data point for what might be affecting things.
LoPoVe is offline   Reply With Quote
Old 07-28-2014, 12:24 PM   #12
AudiWorld Member
Account #: 207990
 
Join Date: Feb 2011
Posts: 107
Default

Here area the codes that the stealership (from my first visit) had on the work order:

P1454 - exhaust gas temp sensor 1 short to ground
P1557 - charge pressure control positive deviation
P0103 - mass or air volume flow a circuit high
P1127 - bank1 too rich long term
P1129 - bank1 too rich long term
P0117 - Engine Coolant Temperature (ECT) circuit low input

Crap!

Still love my S4 but will be relieved when I can get it working.

Has this crap happened to anyone else?
LoPoVe is offline   Reply With Quote
Old 07-28-2014, 07:09 PM   #13
AudiWorld Super User
Account #: 4736
 
Flyboy's Avatar
 
Join Date: Apr 2000
Posts: 3,816
Default

You'd be better off posting on Quattroworld (QW) or Audizine (AZ). Those forums are much more active with the B5 S4 owners. Some of the members at AZ are a bit childish, so don't be surprised, but there are also some knowledgeable people who can give you suggestions.
__________________
www.MyAudiS4.com
Stock -> APR Stg1/2 -> GIAC Stg2 -> APR K04 Stg3 -> EPL TiAL 605 -> V̶A̶S̶T̶ EPL/Frankenturbo F4H -> Stock-ish
Flyboy is offline   Reply With Quote
Old 07-29-2014, 11:50 AM   #14
AudiWorld Member
Account #: 207990
 
Join Date: Feb 2011
Posts: 107
Default

I will start posting in there.

So the dealer says my computer is chipped, and I need a new computer for $1,600 of course. They suck I am pissed I wasted money on them.

any advice? Why cat they just reprogram this computer?

Quote:
Originally Posted by Flyboy View Post
You'd be better off posting on Quattroworld (QW) or Audizine (AZ). Those forums are much more active with the B5 S4 owners. Some of the members at AZ are a bit childish, so don't be surprised, but there are also some knowledgeable people who can give you suggestions.
LoPoVe is offline   Reply With Quote
Old 07-29-2014, 07:04 PM   #15
AudiWorld Super User
Account #: 4736
 
Flyboy's Avatar
 
Join Date: Apr 2000
Posts: 3,816
Default

If it has been chipped there's an additional board that is soldered onto the ECU which would complicate reflashing the tune, realistically though I doubt there's any dealership that would even know how to flash a stock ECU.

You can buy a used ECU for around $100-150 if you needed to try that, but I doubt very very much that it is your ECU causing the problems. Do you know if it is chipped?

Try checking into some of the local forums that cover your area and see if you can get a recommendation to an independent shop that is knowledgeable on the B5 S4.

You could replace the Engine Coolant Temp sensor, that's a cheap DIY project and while I haven't had a problem with mine, I believe it failing can cause some other stuff to read weird that you wouldn't expect.

The secondary O2 sensors would be something else I'd take care of with a reputable parts set.

Maybe just check that the connection on the EGT's is correct. If one is failing you may be able to find a used set from Car-parts.com and swap them yourself.

There are a ton of DIY's floating around for most issues and a lot of discussions about the various common issues that crop up. Hit up those other forums and you'll either get direct help or a suggestion for a nearby shop that is better able to help than your dealer.
__________________
www.MyAudiS4.com
Stock -> APR Stg1/2 -> GIAC Stg2 -> APR K04 Stg3 -> EPL TiAL 605 -> V̶A̶S̶T̶ EPL/Frankenturbo F4H -> Stock-ish
Flyboy is offline   Reply With Quote
Old 07-30-2014, 08:54 AM   #16
AudiWorld Member
Account #: 207990
 
Join Date: Feb 2011
Posts: 107
Default

Thanks flyboy yes the dealer said my ECU is chipped.
I bought a used ECU from wolf auto parts for $216.
I will start with this ECU then see what is fixed.
Is changing the ECU as simple as disconnecting the battery and swapping computers?

ECU eta 2-3 business days.

Quote:
Originally Posted by Flyboy View Post
If it has been chipped there's an additional board that is soldered onto the ECU which would complicate reflashing the tune, realistically though I doubt there's any dealership that would even know how to flash a stock ECU.

You can buy a used ECU for around $100-150 if you needed to try that, but I doubt very very much that it is your ECU causing the problems. Do you know if it is chipped?

Try checking into some of the local forums that cover your area and see if you can get a recommendation to an independent shop that is knowledgeable on the B5 S4.

You could replace the Engine Coolant Temp sensor, that's a cheap DIY project and while I haven't had a problem with mine, I believe it failing can cause some other stuff to read weird that you wouldn't expect.

The secondary O2 sensors would be something else I'd take care of with a reputable parts set.

Maybe just check that the connection on the EGT's is correct. If one is failing you may be able to find a used set from Car-parts.com and swap them yourself.

There are a ton of DIY's floating around for most issues and a lot of discussions about the various common issues that crop up. Hit up those other forums and you'll either get direct help or a suggestion for a nearby shop that is better able to help than your dealer.
LoPoVe is offline   Reply With Quote
Old 07-30-2014, 07:06 PM   #17
AudiWorld Super User
Account #: 4736
 
Flyboy's Avatar
 
Join Date: Apr 2000
Posts: 3,816
Default

Do you have any idea of what chip? You can take the cover off the ECU and it may have the company name on it, most likely APR, GIAC, or MTM.

So long as the ECU you purchased is the same model as your current one you don't even need to disconnect the battery (at least I don't and I've pulled my ECU out dozens of times) just disconnect the one and plug in the replacement.

I doubt the spare ECU will fix anything, although short term it may seem like it does since it won't have any codes stored on it.
__________________
www.MyAudiS4.com
Stock -> APR Stg1/2 -> GIAC Stg2 -> APR K04 Stg3 -> EPL TiAL 605 -> V̶A̶S̶T̶ EPL/Frankenturbo F4H -> Stock-ish
Flyboy is offline   Reply With Quote
Old 08-02-2014, 07:15 PM   #18
AudiWorld Member
Account #: 207990
 
Join Date: Feb 2011
Posts: 107
Default

No idea I think I will make the switch tomorrow and take a look.

The dealer told me what ECU I need and I made sure it was the same part number so I should be good.

My usual mechanic told me something was wrong with the ECU. It should fix the running rich codes? And possibly the MAF errors? This is what the chip does isn't it wants more fuel and air?

I got another deadly error after I got the car back from the dealership. P1519 camshaft timing malfunction bank1. I am scared of this one I don't even want to drive my car. This one came back from the dealership with this code on it.

To be honest ever since I got it back from the dealership it's been shuddering and the abs/traction lights come on all the time.

I am going to hit up those other forums you recommended to see about finding a real mechanic around here.

Quote:
Originally Posted by Flyboy View Post
Do you have any idea of what chip? You can take the cover off the ECU and it may have the company name on it, most likely APR, GIAC, or MTM.

So long as the ECU you purchased is the same model as your current one you don't even need to disconnect the battery (at least I don't and I've pulled my ECU out dozens of times) just disconnect the one and plug in the replacement.

I doubt the spare ECU will fix anything, although short term it may seem like it does since it won't have any codes stored on it.
LoPoVe is offline   Reply With Quote
Old 08-03-2014, 08:11 AM   #19
AudiWorld Member
Account #: 207990
 
Join Date: Feb 2011
Posts: 107
Default

Swapped out ECU......the part number on the ECU in the car was different the one the dealer told me to get was 8D0-907-551-T while the one in the car was -M. Dunno what this means.

Looks like a chip was soldered on the old ECU. See pics.EXILINX

Car started better, was ****ty the first time I cranked it on but then the second time was ok. Took it for a test drive no codes yet and no abs/traction lights. We will see how long this lasts for.
Attached Images
File Type: jpg IMG_3179.jpg (50.1 KB, 24 views)
File Type: jpg IMG_3182.jpg (83.7 KB, 22 views)
LoPoVe is offline   Reply With Quote
Old 08-03-2014, 07:08 PM   #20
AudiWorld Member
Account #: 207990
 
Join Date: Feb 2011
Posts: 107
Default

So only two codes left

P0011 - camshaft timing position advanced or performance bank 1 - no idea but I think the dealer did something

and

P0103 - mass or volume airflow a circuit high

The dealer told me the MAF sensor was reporting the air mass was 25% higher than it should be. I think my crap downstream sensors or there is a boost leak. I changed the MAF and the new one acts the same as the old one.

The traction/abs lights still come on but a lot less often now.
LoPoVe is offline   Reply With Quote
Old 08-03-2014, 07:08 PM
AudiWorld
Audi R8




Paid Advertisement
 
 
 
Reply

Tags
b5, p1454, p1557, s4


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On



Join AudiWorld

All times are GMT -8. The time now is 01:43 AM.


Copyright 2014 AudiWorld.com Audi Enthusiast Community