Air sucking Audi
This bulletin applies to Audi A8 vehicles, where DTC P0491 (secondary air system bank 1, insufficient flow) and/or P0492 (secondary air system bank 2, insufficient flow) is detected. Because of an insufficient vacuum during the catalyst heating phase, the secondary air valves may close prematurely.
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- Written by Maksim
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- 24.12.2014
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