Author Topic: HELP. P0422 explantion  (Read 1760 times)

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bog4rt

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HELP. P0422 explantion
« on: September 14, 2006, 04:13:08 PM »
I have and audi a4 1.8t with apr stage3 turb o upgrade kit. this kit included a high flow cat. i am getting the code p0422 main catalyst bank below threshold. does anyone know exactly what this means or whats going on. they decided to run it on the dyno thingy at emisions and it passed just fine. fast pass. but my interpretation is. the high flow cat is possibley filtering less then a stock cat so therefore is below threshold?
  if anyone can give me some insight i would appreciate.

ianacole

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Re: HELP. P0422 explantion
« Reply #1 on: September 14, 2006, 04:40:40 PM »
It means that your secondary 02 sensor is picking up too much stuff due to the high flow CAT.  You need a spacer to pull the sensor further away from the flow, like this:



I got the part from Wayne in SLC through the VWVortex.  This is his email if you wish to contact him:  spaethschmidt@yahoo.com

And here is a thread with more info (including other pic's of Wayne's part):  http://forums.vwvortex.com/zerothread?id=2445053
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Re: HELP. P0422 explantion
« Reply #1 on: September 14, 2006, 04:40:40 PM »

Eric18T

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Re: HELP. P0422 explantion
« Reply #2 on: September 15, 2006, 12:35:14 AM »
call apr and have them update the software to reduce the activity level of the second o2 sensor. i just had them write me a file to allow me to run a testpipe and not have the catalist code you mentioned.

bog4rt

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Re: HELP. P0422 explantion
« Reply #3 on: September 15, 2006, 06:01:01 PM »
i dont xaclty understand what i would have to do... i bought the car with the apr stage 3 system. i dont have any software other than whats programmed in the car. i am a little illiterate when it comes to this. if u could help me out..

Eric18T

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Re: HELP. P0422 explantion
« Reply #4 on: September 15, 2006, 06:15:02 PM »
the car is running on APR STG 3 software. Call APR give them your ECU code and they should be able to get you the new updated software that will widen the rear O2 sensor range and basically eliminate the CEL catalyst code.

With the newer cars we can flash updated software thru the OBD2 port or if it is an older EPROM that was soldered in, the APR dealer will simply pull the ECU, plug in the programer and load up the new software.

bog4rt

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Re: HELP. P0422 explantion
« Reply #5 on: September 15, 2006, 06:34:55 PM »
so i should look up apr people in my area. and take my car up there. its a 2000 a4 1.8t

Eric18T

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Re: HELP. P0422 explantion
« Reply #6 on: September 15, 2006, 06:40:46 PM »
yep. you are right. if you are here in denver call SCR in loveland or RS in Arvarda.

Here is the link to the APR locator:
http://www.goapr.com/Audi/dealer/locator.php

bog4rt

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Re: HELP. P0422 explantion
« Reply #7 on: September 15, 2006, 11:29:41 PM »
one more thing. is there a price for upgrading your software. if so what is a questimate on what i would pay.