A 740i Sedan, 740i xDrive Sedan (B58N
BMW technical service bulletin B121125 for 2025 BMW 740I.
- Bulletin number
- B121125
- Component
- Electrical system
- Summary
- A 740i Sedan, 740i xDrive Sedan (B58N - ICEV), or a 750e xDrive Sedan (XB1N - PHEV) may have one orboth of the following faults stored in the DME: 034AA5 - Mixture control bank 1, lambda regulation, mixture too lean 034AA8 - Mixture control bank 1, lambda adaptation, mixture too rich And additionally with the faults above, these affected vehicles may have one or more of the followingirregular combustion-related faults also stored: 033812 033813 033814 033815 033816 033817 033818 033819
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