C 320 4MATIC Sedan (203.084) V6-3.2L (112.953) (2003)
Oxygen Sensor: Locations
O2 Sensors, Location
O2 Sensors, Position
Engine 111.951/55 Low emission EURO3
G3/2
O2 sensor upstream of TWC
Engine 111.951/55 Low emission EURO3
G3/1
O2 sensor downstream of catalytic converter
Engine 111.951 low emission D4
157 Firewall catalytic converter
G3/2
O2 sensor upstream of catalytic converter
G3/1
O2 sensor downstream of catalytic converter