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Old Nov 16, 2007 | 10:24 AM
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Audi0007
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Default Error Code
I have error code P0491 Secondary injection air system bank 1. Anybody know what this means and how to fix this? This is on a 2002 A6 with the 3.0 liter engine.

Thanks in advance!
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Old Nov 16, 2007 | 11:28 AM
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Try clearing it and see if it comes back. Then, check for cracked or disconnected Vac/ Air lines
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Old Nov 20, 2007 | 04:16 AM
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Default Re: Try clearing it and see if it comes back. Then, check for cracked or disconnected Vac/ Air lines
I've cleared it and it came back in a couple of days. This weekend I'll see if I can find a vac leak. Thanks for the response!
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