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0422, 2000, a4, a8, audi, b5, catalitic, cel, code, efficiatcy, exhaust, main, p0422, po422, quattro, smell

P0422 Main Catalyst Efficiency Below Threshold w/ Exhaust Smell

markwilliamsnc on 10-13-2013

11-13-2013 06:02 PM
by M5S5

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3

17,760

28, a4, a6, audi, cat, catalyst, code, efficiency, error, leak, p0422, p0432, po422, probable, quattro, replaced, tdc, vaccum, vacuum, vw

both catalysts below efficiency - vacuum leak possible? Please help!

Donz0r on 07-28-2011

07-28-2011 02:47 PM
by Donz0r

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0

2,283

02, 1999, 27t, 28l, a6, audi, cats, code, engine, gmc, po422, sensor, sensors, sierra, universal

1 Attachment(s)

Advice on Cat Converter and 02 Sensor Codes

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Multi-page thread

1 2)

NICKV on 05-21-2010

05-30-2010 09:01 PM
by ninetynineA6Q

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18

4,303

2000, a6, audi, check, engine, forum, light, oxygen, pipe, piping, po422, problems, sensor, straight

tons of engine codes?

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Multi-page thread

1 2)

b0b0 on 03-15-2009

03-17-2009 11:18 AM
by wammy18

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13

1,689

2001, 3500, apr, aud1, audi, codes, file, o2, p0422, pipe, po422, test, trouble, tt, vag

P0422 Vag Com

jhsoccerodp on 02-18-2009

02-18-2009 12:33 AM
by jhsoccerodp

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0

5,794

0422, 06, 18, 18t, 1998, 98, 99, a4, audi, b5, code, fouler, p0422, po, po422

P0422

98A4TQ on 05-25-2008

05-25-2008 09:40 PM
by SuprA4

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1

2,193

18t, bank1, low, po422, power

engine codes!!

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Multi-page thread

1 2 3)

Lefty on 04-28-2008

04-30-2008 12:44 AM
by Lefty

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22

1,973

1999, 42, 422, 99, a4, a6, allroad, audi, awe, cat, check, code, efficiency, engine, heat, po422, po422cat, tuning

PO422 Cat Efficiency code

dynamicav1971 on 03-09-2008

03-09-2008 03:03 PM
by auditech79

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1

2,110

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