audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Oxygen Sensor Heater and Oxygen Sensor 2 Heater, Checking|Page 3831 > < Oxygen Sensor Heater and Oxygen Sensor 2 Heater, Checking|Page 3829
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Open the clips - 2 - and remove the right air filter upper section from the air filter lower section.

Vehicles with air suspension

‹› If necessary, remove electrical connector for Heated Oxygen Sensor (HO2S) 2 (G108) from bracket at right strut tower for better access.

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Press circlip - 1 - forward from hose coupling.

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Press the release ring - 2 - down - arrows  - and remove the ventilation hose - 3 - from the air filter upper section.

All:

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Disconnect vacuum hose - 2 - to Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80) by pressing release button.

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Free up vacuum hose.

‹› Ignore - 1 and 3 -.

Oxygen Sensor Heater and Oxygen Sensor 2 Heater, Checking|Page 3831 > < Oxygen Sensor Heater and Oxygen Sensor 2 Heater, Checking|Page 3829