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May 1, 2020 Service bulletin

Tank ventilation and mixture control faults stored in the dme

BMW technical service bulletin B130420 for 2019-2020 BMW X5, 2012-2016 BMW 328I and 2018-2020 BMW X3 and others.

Bulletin number
B130420
Component
Engine and engine cooling
Summary
TANK VENTILATION AND MIXTURE CONTROL FAULTS STORED IN THE DME: The Engine Malfunction Warning is illuminated and one or more of the following faults are stored in the DME. All models: FC 191C02 - Fuel tank ventilation system 2nd discharge point: malfunction FC 195014 - Differential pressure sensor tank vent valve signal: fixed FC 118001 - Mixture control: mixture too lean FC 118401 - Mixture control: mixture too lean large deviation I01 only: FC 124103 - Mixture control: mixture too lean FC 124101 - Mixture control: Mixture lean large deviation CAUSE Internal mechanical defect in the tank ventilation valve. The defect can also result in a very loud clicking noise when the valve is cycling.

Owners of these vehicles have filed 1,146 complaints in the engine category.

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