S6 Quattro Sedan V10-5.2L (BXA) (2007)
Oxygen Sensor: Service and Repair
Heated Oxygen Sensors before Catalytic Converter
Heated Oxygen Sensors before Catalytic Converter
Special tools, testers and auxiliary items required
‹› Ring spanner 7-piece set for oxygen sensor (3337)
Removing
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Loosen quick-release fasteners - 2 - and remove rear noise insulation.
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Remove electrical harness connectors from bracket and disconnect it:
2
Heated Oxygen Sensor (HO2S) (G39) (in front of catalytic converter) black connection
3
Heated Oxygen Sensor (HO2S) 3 (G285) (in front of catalytic converter) brown connector
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Remove affected oxygen sensor using tool from Ring spanner 7-piece set for oxygen sensor (3337).