2002 Audi A6 Quattro Error Code Help
 

I have a 2002 Audi A6 sedan with 3.0 V6 engine. A friend used their VAG-COM unit to further diagnose a P0421 fault code (Warm up catalyst below threshold - Bank 1)that keeps coming up. The VAG-COM unit displayed an Audi code of 16805. Can anyone tell me what the Audi code is? I have changed spark plugs and the Bank 1 downstream O2 sensor. I assume the Audi code is more explicit but I do not know what the 16805 code is. Please help!!!

http://wiki.ross-tech.com/wiki/index...5/P0421/001057

-Uwe-

Uwe:

Thanks alot!!! But can you tell me three Audi beginner things?

1. What is a warm up catalyst?

2. Do I need VAG-COM to set readiness and HOW do I do it?

3. Name of a good repair manual? Does your company sell them?

Hi Les,

I replied to your email. Have a nice weekend.

-Dana