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

DTC O2 sensor code (m)

Thread Tools
 
Search this Thread
 
Old Sep 21, 2003 | 03:57 PM
  #1  
Bruce M's Avatar
Thread Starter
Banned
 
Joined: Feb 2003
Posts: 2,758
Likes: 0
Default DTC O2 sensor code (m)

I have piggie pipes and a Borla catback. I got the Bank 2 Sensor 1 code, replaced it, and same code came back again.

Any ideas?

Bruce
Reply
Old Sep 21, 2003 | 04:21 PM
  #2  
Mike Staley's Avatar
Member
 
Joined: May 2001
Posts: 740
Likes: 0
From: Houston, TX
Default

Are you sure you replaced the correct sensor?
Reply
Old Sep 21, 2003 | 04:44 PM
  #3  
Bruce M's Avatar
Thread Starter
Banned
 
Joined: Feb 2003
Posts: 2,758
Likes: 0
Default

Yup, watched it at the dealer, and same code came back
Reply
Old Sep 21, 2003 | 05:06 PM
  #4  
Mat Indukts Lambos's Avatar
Banned
 
Joined: Apr 2003
Posts: 5,742
Likes: 1
Default

What code specifically? Slow response? Resistance too low? Implausible signal?
Reply
Old Sep 21, 2003 | 05:33 PM
  #5  
P. Bauer's Avatar
AudiWorld Super User
 
Joined: Jan 2001
Posts: 11,286
Likes: 0
Default you know, the dealer has been known to make mistakes...

if you replace the 02 sensor, and clear the code, it shouldn't come back.

maybe the cats are no good and not catalyzing anymore?

dealer screw up most likely.
Reply
Old Sep 21, 2003 | 05:42 PM
  #6  
PlainRuss's Avatar
Member
 
Joined: Sep 2003
Posts: 4,350
Likes: 0
Default Re: DTC O2 sensor code (m)

Really need to know which code exactly it is just like Mat said. Especially if it is an O2 sensor bank X system too lean. Typically that will be caused by a vacumn leak.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
toothandnail
A8 / S8 (D2 Platform) Discussion
4
Oct 21, 2010 05:53 AM
heateris
A4 (B6 Platform) Discussion
0
Sep 14, 2008 10:53 AM
QuattroFan02
A4 (B6 Platform) Discussion
3
Oct 14, 2007 12:39 PM
Mr. Head
VAG-COM Discussion
0
Nov 21, 2003 12:38 PM
808Guy
S4 / RS4 (B5 Platform) Discussion
0
Aug 26, 2002 01:03 PM




All times are GMT -8. The time now is 04:36 PM.

story-0
The Highs & Lows of Every Audi C-Class Generation

Slideshow: The highs and lows of every Audi C-Class generation.

By Joe Kucinski | 2026-05-27 16:05:50


VIEW MORE
story-1
Top 10 Most Expensive Audis Ever Sold on Bring-A-Trailer

People were more than happy to shell out big bucks for these cars.

By Brett Foote | 2026-05-27 15:32:23


VIEW MORE
story-2
10 Audi Features & Options We Miss the Most!

Slideshow: 10 Audi features and options we miss the most.

By Joe Kucinski | 2026-05-12 19:33:47


VIEW MORE
story-3
Audi Recreates Crazy-Looking Speed Record Breaker From 1935

Slideshow: Audi has recreated one of the wildest machines of the pre-war speed-record era, reviving a streamlined V16 racer that originally exceeded 200 mph in 1935.

By Verdad Gallardo | 2026-05-11 09:49:34


VIEW MORE
story-4
Coachbuilder Recreates the 1995 Audi TTS Concept

Slideshow: A Dutch coachbuilder has reimagined the original Audi TT by finishing what the 1995 concept only hinted at.

By Verdad Gallardo | 2026-05-05 15:17:58


VIEW MORE
story-5
Every Audi V10 Car Ranked!

Slideshow: Ranking every Audi V10 road car

By Joe Kucinski | 2026-04-29 16:11:56


VIEW MORE
story-6
9 Audi Designs That Aged Like Fine Wine

Slideshow: A look back at the Audis that didn't just survive changing tastes, they quietly outgrew them.

By Verdad Gallardo | 2026-04-28 19:38:27


VIEW MORE
story-7
2026 Audi Q5 Buyer's Guide (Every Model Explained)

One year off a full redesign, the best-selling Q5 is getting a few more updates.

By Brett Foote | 2026-04-17 09:56:19


VIEW MORE
story-8
Ranking Every Current Audi 'S' Model From Worst to First!

Slideshow: Ranking every current Audi 'S' model on sale today from worst to best.

By Joe Kucinski | 2026-04-16 10:28:28


VIEW MORE
story-9
10 Best Audis That are FINALLY LEGAL to Import to the U.S.!

Slideshow: 10 best Audis that are finally legal to import to the U.S.

By Joe Kucinski | 2026-03-24 17:20:08


VIEW MORE