marctnts

My check engine light came on today. Nothing seems to be different than usual (i.e. it's still driving fine). The only thing I have noticed is that since I bought the car, it seems to hesitate (or slighly cut-out) when I take off first thing in the morning, and only on the first time I accelerate.

Any ideas of common causes for the CEL, and does anyone think it may be related to the hesitation?

It's a 2003 A6 3.0 (non quattro)
Automatic
21,500 miles

Any insight is appreciated. Thanks.

marctnts

I took the care to the local Autozone and pulled the CEL code (a helpful tip from the forum).

P0421-Warm Up Catalyst Below Threshold

Does anyone have any idea what this means, and what's involved with the repair?

Any help is appreciated. Thanks.

donp

One of your cat converters is failing.

marctnts

I searched the archive, and it seems that if the cat is failing, the dealership should replace it free under the 8/80 federal emissions warranty. My car is an 03 with only 21,500 miles on it.

I am right in this line of thinking? has anyone run into any issues with trying to get this replaced under the warranty?

marctnts

I searched the archive, and it seems that if the cat is failing, the dealership should replace it free under the 8/80 federal emissions warranty. My car is an 03 with only 21,500 miles on it.

I am right in this line of thinking? has anyone run into any issues with trying to get this replaced under the warranty?

donp

I would agree.

FinnishPride

The dealer must fix it! Federal law. And yes it is a cat converter, bank 2=drivers side fyi

Press

when you searched did you see that you can change the subject line also?

jusniaa6

Hi Season greetings,

I'm very new to this site.I have a 2004 a6. And I noticed my check engine light came on and switched off I believe its one of my cat. converters,also what service do i need to do I have 61,000.00 miles on my a6 any help will be greatly appreciated