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P0491 and P0492 first and second bank secondary air injection code

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Old 07-18-2011, 12:44 PM
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Default P0491 and P0492 first and second bank secondary air injection code

I have a 2003 Audi A6 Quatro 3.0L 130,000 that just threw these codes. Any hints on where to start looking as to why?
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Old 07-18-2011, 04:45 PM
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Any recent damage or work done to the front end right side(passenger side)???
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Old 07-23-2011, 12:20 AM
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Vacuum lines going to Combination valves or the valves themselves, secondary air pump and/or hoses, power to the pump are some of the things to start with.
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