C 240 4MATIC Wagon (203.281) V6-2.6L (112.916) (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 Sensors, Task
O2 Sensors, Task
1
Electrical connection
2
Sensor housing
3
Active ceramic probe body
4
Electrode (inner)
5
Electrode (outer)
6
Heating element
7
Inner, open combustion chamber
8
Protective tube