C 320 4MATIC Sedan (203.084) V6-3.2L (112.953) (2003)
Model 209 with engines 112, 113
157
Firewall catalytic converter
G3/3
Left O2 sensor upstream of catalytic converter x1 plug connection
G3/4
Right O2 sensor upstream of catalytic converter x1 plug connection
G3/5
Left O2 sensor downstream of catalytic converter x1 plug connection
G3/6
Right O2 sensor downstream of catalytic converter x1 plug connection
O2 Sensor 1 Upstream TWC [KAT] (View 1)