2002 Audi A6 Po492 Code Secondary Air System Bank 2 Located Engine Posible

2002 AUDI A6
170,987 MILES
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Where is "po492"(is the code) secondary air system bank 2 located in the engine?? And if posible send a diagram
Apr 9, 2013 at 3:22 AM
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ASEMASTER6371
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the passenger back of head is a check vale that needs to be checked for holding vacuum. the passage also clogs up causing this code

Roy
Apr 17, 2013 at 3:10 PM
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EXOVCDS
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Bank 2 is on driver side.
May 11, 2013 at 9:42 PM
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