mercedesbenz Workshop Repair Guides

Mercedes Benz Workshop Service and Repair Manuals

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O2 Sensors, Location/Task/Design/Function|Page 980 > < O2 Sensors, Location/Task/Design/Function|Page 978

S 500 Sedan (140.051) V8-5.0L (119.980) (1996)

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Note: (USA) Engine 112.946 with code 929 Flexible Fuel Vehicle (FFV)

After each fueling the Ethanel portion is determined by means of the O2sensor voltage upstream TWC in the fuel tank. If for example Ethanol was
refueled, the mixture is at first too lean (oxygen sensor voltage jumps back to 0 Volt). The lambda control reacts if the mixture to be enriched until
after fueling lambda = 1 is achieved again. 

O2 Sensors, Location/Task/Design/Function|Page 980 > < O2 Sensors, Location/Task/Design/Function|Page 978