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code 0422cyrax122 09-19-2007, 11:54 AM 99.5 jetta 2.0 I have a obdII reader I read P0422 Main Catalyst,Bank1 Below Threshold Can any one tell me what that is? Thank You 2001jettavr6 10-16-2007, 08:04 PM It is either the o2 sensors on the catalytic converter or the catalytic converter itself is bad vBulletin®, Copyright ©2009, Jelsoft Enterprises Ltd.
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