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SIB 12 11 25: One or both of the following faults stored in the DME
One or both of the following faults stored in the DME on B46/B48/B58 engines (2024–2025); BMW explains the cause and the approved repair.
BMW service bulletin · NHTSA ID 11025668 · Nov 2025 · also written SI B12 11 25, B121125
What it covers
A service bulletin tells BMW technicians how to diagnose or fix a known issue. It is not a recall: a repair under a bulletin is normally paid by the owner unless the car is still under warranty or a warranty extension applies.
One or both 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 03
Details
| Bulletin number | SIB 12 11 25 Also written: SI B12 11 25, B121125, 12 11 25, SIB-12-11-25, SI B121125 |
|---|---|
| NHTSA ID | 11022357, 11025668 (revisions) |
| Document IDs filed | B121125 |
| Type | Service bulletin |
| Date | (first filed Aug 2025) |
| Models | 530i, 740i |
| Model years | 2024–2025 |
| Chassis | G60, G70 |
| Engines | B46/B48, B58 |
| Component (NHTSA) | Electrical System Engine |
Model, year and engine coverage comes from NHTSA's records. Not every car in this range is affected; the official document lists the exact production dates and conditions.
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Before you pay, check the VIN for recalls. Some failures are covered by a safety recall or a BMW warranty extension.
Source: NHTSA Manufacturer Communications (public data). BimmerBench is not affiliated with BMW or NHTSA. The title and description above are our own plain-English summary; the full bulletin is BMW's document, linked above.