# Service bulletin A211522 2039006\-

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: 10128405
- Published by NHTSA: 2018\-02\-05
- Manufacturer's number: A211522 2039006\-
- Manufacturer's date: 2015\-08\-04
- NHTSA component: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER

## NHTSA's summary

Supersedes Technical Service Bulletin Group 21 number 14\-21 dated November 26, 2014. The MIL is on. Customer may report a reduction in power. DTC P029900 \(Turbo/Super Charger Underboost\) is stored in the engine control module \(ECM\), J623 \(address word 01\). The circlip connecting the turbo wastegate actuator rod and the wastegate flap lever can fall off due to low tension of the clip. Consequently, the wastegate linkage becomes disconnected, causing MIL on and DTC P029900.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2015/MC-10128405-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2015/MC-10128405-0001.pdf)

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

## Components

Electrical system, Engine, Turbocharger or supercharger

## Trouble codes named

P0299

## Vehicles listed

- 2013 to 2014 AUDI A4 ALLROAD
- 2013 to 2014 AUDI A5
- 2013 to 2014 AUDI A5 CABRIOLET
- 2013 to 2014 AUDI A6
- 2013 to 2014 AUDI Q5
- 2013 to 2014 AUDI TT ROADSTER

## Other bulletins for the same vehicles and component

- [Edition114](/bulletins/10231113.md), 2023-02-06, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. Wastegate linkage dissconnected
- [131320312454](/bulletins/10216699.md), 2022-08-01, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. Under certain driving conditions, the linkage for the waste gate actuation can encounter excessive wear which leads to play at the waste gate flap. This leads to boost escaping through a loose flap, which sets DTC P0299 \(Negative Pressure Deviation\).
- [131220312453](/bulletins/10216698.md), 2022-08-01, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. Under certain driving conditions, the linkage for the waste gate actuation can encounter excessive wear which leads to play at the waste gate flap. This leads to boost escaping through a loose flap, which sets DTC P0299 \(Negative Pressure Deviation\).
- [21F2 \- Dealer Le](/bulletins/10128375.md), 2018-02-05, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. On Audi vehicles with 4.0L TFSI engines manufactured within a specific period, the O\-rings in the coolant lines for the turbocharger may be damaged. This can result in leaks between the coolant lines and the turbocharger.
- [21F2 \- Circular](/bulletins/10127765.md), 2018-02-05, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; ENGINE AND ENGINE COOLING. On Audi vehicles with 4.0L TFSI engines manufactured within a specific period, the O\-rings in the coolant lines for the turbocharger may be damaged. This can result in leaks between the coolant lines and the turbocharger.
- [21F2 \- Bulletin](/bulletins/10127764.md), 2018-02-05, Service bulletin: ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. On Audi vehicles with 4.0L TFSI engines manufactured within a specific period, the O\-rings in the coolant lines for the turbocharger may be damaged. This can result in leaks between the coolant lines and the turbocharger.
- [21F2 \- Bulletin](/bulletins/10127763.md), 2018-02-05, Service bulletin: ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. On Audi vehicles with 4.0L TFSI engines manufactured within a specific period, the O\-rings in the coolant lines for the turbocharger may be damaged. This can result in leaks between the coolant lines and the turbocharger.
- [A211313 2031245\-](/bulletins/10123907.md), 2017-11-17, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. Supersedes Technical Service Bulletin Group 21 number 13\-12 dated April 1, 2013. MIL on, DTC P0299 \(Negative Pressure Deviation\) is stored. Turbocharger waste gate flap has play. Under certain driving conditions, the linkage for the waste gate actuation can encounter excessive wear which leads to play at the waste gate flap. This leads to boost escaping through a loose flap, which sets DTC P0299 \(Negative Pressure Deviation\).
- [A211312 2031245\-](/bulletins/10123906.md), 2017-11-17, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. Supersedes Technical Service Bulletin Group 21 number 13\-11 dated March 6, 2013. MIL on, DTC P0299 \(Negative Pressure Deviation\) is stored. Turbocharger waste gate flap has play. Under certain driving conditions, the linkage for the waste gate actuation can encounter excessive wear which leads to play at the waste gate flap. This leads to boost escaping through a loose flap, which sets DTC P0299 \(Negative Pressure Deviation\).

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