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SIB 11 04 24: Turbo wastegate fault codes

Turbo wastegate fault codes on B46/B48 engines (2024); BMW gives an adjustment procedure.

BMW service bulletin · NHTSA ID 11008988 · Oct 2024 · also written SI B11 04 24, B110424

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 of the following faults are stored in the DME: 123432 - Electrical wastegate valve, adaptation: Limit position shut, implausible 123433 - Electrical wastegate valve, adaptation: adjustment range implausible 123511 - Electrical wastegate valve: stiff movement

NHTSA's summary of this communication (excerpt)

Official document on NHTSA (PDF) →

Details

Bulletin numberSIB 11 04 24
Also written: SI B11 04 24, B110424, 11 04 24, SIB-11-04-24, SI B110424
NHTSA ID11008988
Document IDs filedB110424
TypeService bulletin
Date
Models230i, 330i
Model years2024
ChassisG20, G42
EnginesB46/B48
Component (NHTSA)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.

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