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Emissions B120326

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeEmissions
NHTSA id11035396
Published by NHTSA2026-07-31
Manufacturer's numberB120326
Manufacturer's date2026-07-10
Campaign id or software version0099020300
NHTSA componentENGINE

NHTSA's summary

Due to an implementation error in various OBD diagnostics in the vehicle's control units, in very rare cases itmay happen that stored fault memory codes (DTCs) and the MIL (warning light) are not automaticallydeleted even though the underlying malfunction has already been rectified. This does not comply with the statutory OBD specifications.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Vehicles listed
BMW 230I2023, 2024, 2025, 2026
BMW 530I2023, 2024, 2025, 2026
BMW 740I2023, 2024, 2025, 2026
BMW M52025, 2026
BMW X12023, 2024, 2025, 2026
BMW X22023, 2024, 2025, 2026
BMW X32023, 2024, 2025, 2026
BMW X52023, 2024, 2025, 2026
BMW X62023, 2024, 2025, 2026
BMW X72023, 2024, 2025, 2026
BMW XM2023, 2024, 2025
BMW XM LABEL2026

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20263312026-07-08. Engine
20260402026-01-30. Engine
23V2940002023-04-26. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
B1211262026-09-28. Service bulletin. Potential customer complaints with no fault codes stored / No MIL displayed. 1. “Rough idle after idling for a longer period of time” 2. “Vehicle feels like it is misfiring at idle” The automatic Start/Stop function is deactivated. The vehicle is stopped and the engine runs at idle speed. After prolonged idle operation (approximately 30 to 50 seconds), a slight jolt or slight change in idlespeed may be noticeable. There are no relevant errors in the DME fault code memory. No mixture control error, no misfiring, no error relating to a relevant component of the drive system. Motor vehicles affected: 1. Only MHEVs (mild hybrid electric vehicle) with crankshaft-driven starter generator. 2. Only vehicles with optional equipment 01CE = recuperation system 3. Affected I-levels: I-level 24-07-500 or higher
B1301262026-09-01. Service campaign. Delivery Stop - Exhaust System Gasket
B0644262026-08-28. Other. Air Flap Return
B0641262026-08-28. Other. Fan Return
B1801262026-08-26. Service campaign. An exhaust gas sealing ring between thelower catalytic converter and upper catalyticconverter may be missing (1).
B1107232026-08-26. Emissions. The return springs on the exhaust camshaft followers (switchable rocker arm) may break.
B1103262026-08-26. Service bulletin. This Service Bulletin provides instructions to clean the intake valves using the BMW Carbon Blaster Tool P/N 81 29 2 208 034 and the S68T / XB1T Kit P/N 83 30 5 BAD 3D5. Refer to SI B04 12 11 for existing documentation about the carbon blaster tool and SI B04 02 26 for the S68T /XB1T tool kit.
B0103242026-08-03. Warranty extension. The EVAP systems purge (vent) valve limited warranty for defects in materials and / or workmanship has been extended to 15 years / 150,000 miles as determined from the original first in-service / delivery date.
B0102242026-08-03. Warranty extension. The EVAP systems purge (vent) valve limited warranty for defects in materials and / or workmanship has been extended to 15 years / 150,000 miles as determined from the original first in-service / delivery date.
B0639262026-08-03. Other. Starter Generator Return