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SIB 12 28 16: Turbo wastegate reduced power

Turbo wastegate reduced power on BMW F07/F22/F23/F30 and other models (2016–2017); BMW explains the cause and the approved repair.

BMW service bulletin · NHTSA ID 10146784 · Nov 2016 · also written SI B12 28 16, B122816

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.

DME Electrical Wastegate Valve Faults - Adaptation Limit Positions Not Detected. Engine runs with reduced power. Emissions warning lamp lights up. One or more of the following faults are entered in the DME fault memory.

NHTSA's summary of this communication (excerpt)

Official document on NHTSA (PDF) →

Details

Bulletin numberSIB 12 28 16
Also written: SI B12 28 16, B122816, 12 28 16, SIB-12-28-16, SI B122816
NHTSA ID10146784
Document IDs filedB122816
TypeService bulletin
Date
Models230i, 330i, 340i, 430i, 440i, 5 Series Gran Turismo, M240i
Model years2016–2017
ChassisF07, F22, F23, F30, F31, F32, F33, F34, F36
EnginesB46/B48, B58, N55, N63
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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