B6 Models Please discuss all 2002 - 2005 B6 A4 topics here...

P0431, P0421 codes, help!!

Thread Tools
 
Search this Thread
 
  #1  
Old 04-27-2008 | 06:06 PM
monkey323i's Avatar
Thread Starter
|
1st Gear
Joined: Dec 2007
Posts: 88
Default P0431, P0421 codes, help!!

Hi guys:

recently I keep getting P0431, P0421 code CEL from VAG-COM.

After I cleared it, it comes back within 2 days.

This is my 4th time clearing the code. Now definitely sth's wrong.

I searched for some related post, it has sth to deal with faulty O2 sensor, fauty cat converter, or exhaust leak.

Just wondering usually what is the cause most likely?

Is it still ok to drive? like will it do any further damage to my car?

appreciate any help !!!

thx!!!!
 
  #2  
Old 04-29-2008 | 12:05 AM
AudiTech616's Avatar
1st Gear
Joined: Apr 2008
Posts: 98
Default RE: P0431, P0421 codes, help!!

Your gonna need both CAts. Bank 1 and Bank 2
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
existence1000
B6 Models
3
04-08-2013 01:47 AM
audiLOVESwisco
Computer & Fuel Systems
2
02-19-2011 01:11 PM
bslags
Intake, Headers and Exhaust
0
03-27-2008 12:23 PM
rerodriguez11
Audi A4
1
10-06-2007 03:38 PM




All times are GMT -4. The time now is 11:43 PM.