{"nhtsa_id":11025668,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-11-25","date":"2025-11-12","document_id":"B121125","mfr_campaign":null,"replaces":null,"component":"ENGINE; ELECTRICAL SYSTEM","mfr_system":null,"summary":"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 033817 033818 033819","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11025668-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11025668-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11025668","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BMW","model":"530I","year_from":2024,"year_to":2025,"match":"exact","vehicle_ids":["2024_bmw_530i","2025_bmw_530i"]},{"make":"BMW","model":"740I","year_from":2024,"year_to":2025,"match":"exact","vehicle_ids":["2024_bmw_740i","2025_bmw_740i"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}