Code P0421 was NOT catalytic converter
#1
Code P0421 was NOT catalytic converter
I have a 2000 A4 with the 2.8 V6 and 139k. I recently had the check engine light come on and found it was code P0421. Most people told me it was the cats. I took it to a very reputable German car mechanic who said he's seen this in these Audi's and he felt that it was a faulty code, that the ECU parameters were too stringent.
Based on that info, I took it in to Audi and had them flash the ECU. That was about 1k miles ago and I haven't had the light come back on.
Based on that info, I took it in to Audi and had them flash the ECU. That was about 1k miles ago and I haven't had the light come back on.
#3
#4
No. Audi service sucks.
They issue a TSB instead of a recall so they can decide who pays and who doesn't. Unless you are the original owner and the car has been serviced at Audi, forget it.
BTDT with the local dealer and Audi of America.
Their contention: car is out of warranty.
My contention: warranty period not applicable since nothing is broken; car is functioning as designed. Design flaw should be corrected at Audi expense.
They issue a TSB instead of a recall so they can decide who pays and who doesn't. Unless you are the original owner and the car has been serviced at Audi, forget it.
BTDT with the local dealer and Audi of America.
Their contention: car is out of warranty.
My contention: warranty period not applicable since nothing is broken; car is functioning as designed. Design flaw should be corrected at Audi expense.
#5
Code P0421 was NOT catalytic converter : I have a 2000 A4 with the 2.8 V6 and 139k. I recently had the check engine light come on and found it was code P0421. Most people told me it was the cats. I took it to a very reputable German car mechanic who said he's seen this in these Audi's and he felt that it was a faulty code, that the ECU parameters were too stringent.
Based on that info, I took it in to Audi and had them flash the ECU. That was about 1k miles ago and I haven't had the light come back on.
Based on that info, I took it in to Audi and had them flash the ECU. That was about 1k miles ago and I haven't had the light come back on.
That sucks that they charged you
#6
I'm having that problem with my A4 right now. I just contacted the dealer and they told me they are no longer doing the flash. Is there any way to take care of it myself? I'm going to try the spark plug defouler trick to see if that works. The dealer wanted to just replace the cats. I guess there wasn't enough money for them in just resetting the parameters.
#7
AudiWorld Super User
I'm having that problem with my A4 right now. I just contacted the dealer and they told me they are no longer doing the flash. Is there any way to take care of it myself? I'm going to try the spark plug defouler trick to see if that works. The dealer wanted to just replace the cats. I guess there wasn't enough money for them in just resetting the parameters.
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01-30-2004 06:23 PM