Secondary Air Injection Sensor 1 -G609-, REMOVING AND INSTALLING: Removing

WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2017 Audi S5, 2016 Audi S5, 2016 Audi S4, 2015 Audi S5, and 2015 Audi S4. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Engine Cover

Courtesy of AUDI OF AMERICA, LLC

-- Remove the rear engine cover -2- upward.

-- Free up the fuel hose -1- and the Evaporative Emission (EVAP) canister hose -2- on the air duct pipe.

Fig 2: Identifying Air Duct Pipe

Courtesy of AUDI OF AMERICA, LLC

-- Remove the vacuum hose -3- from the air guide pipe connection.

-- Remove the air guide pipe by loosening the hose clamp -4- and opening the clips -arrows-.

-- Disconnect the connector -1-.

Fig 3: Identifying Installed Location: AIR Sensor 1 -G609-

Courtesy of AUDI OF AMERICA, LLC

-- Release the retainers in direction of -arrows- and remove the Secondary Air Injection Sensor 1 -G609- -2-.