Component Location Secondary Air Injection Solenoid Valve N112

WARNING: This page is about a different car, the 2012 Audi S5, 2011 Audi S5, 2010 Audi S5, 2009 Audi S5, and 2008 Audi S5. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Installation Location Of Secondary Air Injection (AIR) Solenoid Valve -N112-

Courtesy of AUDI OF AMERICA, LLC

In the rear, on the left cylinder head -arrow-.