A8 Quattro Sedan V8-4.2L (BGK) (2006)
Oxygen Sensor: Service and Repair
Oxygen Sensors before Catalytic Converter
Oxygen Sensors before Catalytic Converter
Removing Heated Oxygen Sensor (HO2S) (G39) bank 1 and Heated Oxygen Sensor (HO2S) 2 (G108) bank 2, removing and installing
Special tools, testers and auxiliary items required
‹› Ring spanner 7-piece set for oxygen sensor (3337)
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Remove engine cover.
‹› Intake manifold must be removed to remove oxygen sensor before catalytic converter.
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Remove intake air hose between air filter and throttle valve control module.
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Open fuel supply and fuel return line - 1 and 2 -.