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Board index » OBD Troubleshooting Help » OBD-II P0XXX Powertrain Codes All times are UTC - 7 hours [ DST ]

2003 VW Passat P0421/P0431 codes

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flyrodr43	Post subject: 2003 VW Passat P0421/P0431 codes Posted: Mon Apr 06, 2009 9:33 pm
Joined: Mon May 12, 2008 6:14 pm Posts: 3	My 2003 Passat is showing both P0421 and P0431 codes. Could this indicate a mass air flow sensor problem or some other intake related problem? If not what could it be?
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Joined: 29 Jun 2004 08:12 pm Posts: N/A
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