Po431 below threshold bank 2 - AudiWorld Forums

A6 / S6 (C5 Platform) Discussion Discussion forum for the C5 Audi A6 and S6 produced from 1998-2004

Po431 below threshold bank 2

Thread Tools Search this Thread
Old 08-17-2010, 08:37 PM   #1
AudiWorld Newcomer
Thread Starter
Join Date: Aug 2010
Posts: 1
Default Po431 below threshold bank 2

So I'm new hear on this forum and I just bought an Audi a6 2002 I have had it for about a month and first the brakes go front and rear with rotors and now the check engine light! The obd code was p0431. Warm up catalyst efficiency Below threshold bank 2. Explanation: Air leak before catalytic converter. Cause: rich air fuel ratio or catalytic converter! Any body have this problem? What is a proven fix? I also recently reset the code, to see if it comes up again. Any suggestion?
Audi a6 pearls is offline   Reply With Quote
Old 08-18-2010, 06:04 AM   #2
AudiWorld Member
massboykie's Avatar
Join Date: Feb 2006
Location: Natick, MA
Posts: 493

Originally Posted by Audi a6 pearls View Post
...obd code was p0431....
http://dtcsearch.planetvag.com (but you have this info already)

Check here for common fixes etc:

massboykie is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Popping/ Thumping Noise from Airbox Junius A8 / S8 (D3 Platform) Discussion 7 08-11-2016 06:48 AM
Camshaft replacement sensor code problems brandonb93 A4 (B7 Platform) Discussion 10 12-01-2015 06:51 PM
October 25th Sunday - Touge.ca Shannonville Full track event 11:30-5:30pm #23 Event!! Touge.ca Canadian Discussion 1 10-18-2015 07:18 AM
Horn doesn't work!!! arn560 S4 (B8 Platform) Discussion 1 10-02-2015 06:31 PM
2008 A8 Camshaft sensor dgw124 A8 / S8 (D3 Platform) Discussion 2 09-27-2015 07:26 PM

2, a4, a6, audi, bank, catalyst, code, codes, efficiency, engine, obd, odb, po431, threshold, warm

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -8. The time now is 08:55 AM.

  • Ask a Question
    Get answers from community experts
What's your question?