mercedesbenz Workshop Repair Guides

Mercedes Benz Workshop Service and Repair Manuals

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O2 Sensors, Location/Task/Design/Function|Page 1719 > < O2 Sensors, Location/Task/Design/Function|Page 1717

C 320 Wagon (203.264) V6-3.2L (112.946) (2004)

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temperature upstream of TWC is limited to approx. 350 °C in the condensation phase after cold start. After this, the temperature is controlled to approx.
700 °C. An exhaust temperature is determined from various engine operating data for this purpose and the sensor heated accordingly. 
Different values apply to the O2 sensor heaters downstream of TWC. 

ME-SFI Two-Sensor Control Function

ME-SFI Two-sensor Control Function

O2 Sensors, Location/Task/Design/Function|Page 1719 > < O2 Sensors, Location/Task/Design/Function|Page 1717