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Service bulletin A211931 2044640-

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)
TypeService bulletin
NHTSA id10160461
Published by NHTSA2019-05-28
Manufacturer's numberA211931 2044640-
Manufacturer's date2019-03-04
NHTSA componentEQUIPMENT; ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER; EQUIPMENT ADAPTIVE/MOBILITY

NHTSA's summary

This bulletin contains repair instructions for when the engine cannot be started or it is difficult, there is unusual noises when accelerating and/or there is reduced engine performance.

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, Equipment and accessories, Turbocharger or supercharger

Vehicles listed
AUDI A82016, 2017
AUDI RS 72016, 2017
AUDI S72016, 2017
AUDI S82016, 2017

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

Recalls for the same vehicles and component
22V1780002022-03-23. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER

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
A2120362044640_92020-12-04. Service bulletin. This bulletin contains repair instructions for when the engine cannot be started or it is difficult, there is unusual noises when accelerating and/or there is reduced engine performance.
A2120352059258_12020-05-07. Service bulletin. This bulletin contains instructions for diagnosing a damaged turbocharger and calling TAC.
A2119322034999_42019-07-09. Service bulletin. This informational bulletin contains an explanation for a discolored pipe.
A211727 20446402018-04-16. Service bulletin. This bulletin contains detailed instructions and a worksheet for determining the damage on a turbocharger.
A211317 2034999-2017-12-05. Service bulletin. On 4.0l bi-turbo FSI engines, the pipe on the impeller side of the bank 2 turbocharger looks discolored when compared to the pipe on the bank 1 turbocharger. The crankcase breather is only connected to the bank 2 turbocharger inlet. Blow-by gases from the crankcase breather discolor the pipe. This is a normal condition.
A211724 2044640-2017-10-04. Service bulletin. This bulletin contains detailed instructions and a worksheet for determining the damage on a turbocharger.
A211623203499932017-03-17. Service bulletin. THIS TECHNICAL SERVICE BULLETIN EXPLAINS WHY THE IMPELLER SIDE OF THE BANK 2 TURBOCHARGER LOOKS DISCOLORED.