# Service bulletin B120324

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.

- Type: Service bulletin
- NHTSA id: 11028920
- Published by NHTSA: 2026\-02\-23
- Manufacturer's number: B120324
- Manufacturer's date: 2026\-02\-12
- NHTSA component: ENGINE

## NHTSA's summary

The Engine Malfunction Warning is illuminated, and the following fault code is stored in the DME\- FC 034AEF Exhaust Cold Start, Not Controllable

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11028920-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11028920-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2024 BMW X1
- 2024 BMW X2

## Other bulletins for the same vehicles and component

- [B120326](/bulletins/11035396.md), 2026-07-31, Emissions: ENGINE. 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.
- [B120723](/bulletins/11006720.md), 2024-09-01, Service bulletin: ENGINE. Vehicle exhibits a slight acceleration delay when taking off from a MSA \(automatic engine start\-stop function\) stop.
- [B110124](/bulletins/11005211.md), 2024-07-25, Service campaign: ENGINE. The vibration dampener side cover may not have been pressed in correctly, resulting in a vibration or arough running sensation.
- [B160623](/bulletins/10247567.md), 2024-01-03, Service bulletin: FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING. Engine will crank but not start. There is no communication with the integrated fuel module \(TFE\) whendiagnosing with ISTA. The following two fault codes will be stored in the DME: 032B43 \- Low fuel pressure system, electric fuel pump: pressure value too low CDA594 \- Message \(\- 0x33E\) missing, receiver DME, transmitter TFE
- [B120723](/bulletins/10245368.md), 2023-12-06, Service bulletin: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Vehicle exhibits a slight acceleration delay when taking off from a MSA \(automatic engine start\-stopfunction\) stop.

JSON: [/v1/bulletins/11028920](/v1/bulletins/11028920)

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