Tank ventilation diagnosis
BMW technical service bulletin B160420 for 2018, 2020-2021 BMW X5, 2019-2021 BMW X3 and 2021 BMW X6 and others.
- Bulletin number
- B160420
- Component
- Fuel system, gasoline
- Summary
- TANK VENTILATION DIAGNOSIS: There is software error in the diagnosis of the fuel tank ventilation valve. This error may result in the Service Engine Soon (MIL) light not being activated if a fault is found in the tank vent system after a second fault detection.
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