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2002 Audi A4 3.0 Quattro scan code PO431

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Old 09-16-2011, 10:53 AM
silver a vier's Avatar
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Join Date: Sep 2011
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Default 2002 Audi A4 3.0 Quattro scan code PO431

This code says it is bank 2 catalyst warmup efficiency. First off which side of the car is this, drivers or passengers? Secondly does this mean I need to replace the catalytic converter or is there a chance the O2 sensors are bad?
 
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Old 09-17-2011, 03:04 PM
bigdadi's Avatar
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Join Date: Sep 2010
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B1 is passenger, B2 is driver ...

O2 Simulator, mini catalytic Converter cel fix
 
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