A6 Quattro Sedan V8-4.2L (BVJ) (2007)
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Oxygen Sensor: Locations
Component Locations Overview
Oxygen Sensors Location, Cylinder Bank 2 (left)
1. Heated Oxygen Sensor (HO2S) 2 (G108)
2. Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) (G131)