S4 (B6 & B7 Platforms) Discussion Discussion forum for the B6 Audi S4 produced from 2003-2005 And B7 Audi S4 produced from 2005 -2008

Check Engine Light

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Old 02-04-2010, 11:01 AM
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Default Check Engine Light

The check engine light just came on my '06 S4. Found out the problem as PO492 - Secondary Air Injection system (Bank 2).

Is this something one can do or does it need to be done by Audi dealer? Any idea on the cost to repair this?

All input is appreciated.
Old 02-04-2010, 11:25 AM
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still under warrt?
Old 02-04-2010, 01:31 PM
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Originally Posted by audi01a6
still under warrt?
Warranty expired 2 months ago.
Old 03-13-2011, 10:03 AM
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Check for cracked or broken hose. I have the same issue on my A4..the mechanic said it was $116 from Audi.
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