17 MIL on; whistling noises from engine compartment (DTC P2279 and/or P0507)
17 17 80 2040644/7 February 14, 2017. Supersedes Technical Service Bulletin Group 17 number 17-79 dated
January 19, 2017 for reasons listed below.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

A6, A7, A8

2013 - 2016

All

4.0 TFSI

Condition
REVISION HISTORY
Revision

Date

Purpose

7

-

Revised Required Parts and Tools (Updated part number)

6

01/19/2017

Revised Warranty (Updated time units and Claim Type)

5

03/18/2016

Revised Required Parts and Tools (Added retaining clip, o-ring, coolant
additive, and distilled water)

 A metallic whistling or grinding sound is heard from the engine compartment when the vehicle is at idle speed.
 The sound usually only occurs when the engine is warm.
 The MIL is sporadically on.
The following DTCs are stored in the engine control module (ECM), J623 (address word 0001):
 DTC P2279 (Intake air system leak)
 DTC P0507 (Idle control system rpm higher than expected)

Technical Background
A leak in the crankcase breather module (pressure regulating valve) can cause this condition.

Production Solution
Fabric reinforced internal membrane of crankcase breather module.

Page 1 of 5
© 2017 Audi of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of Audi of
America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted
in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Service
1.

Perform both of the following checks before
proceeding:
 Compare the sound of the vehicle to the sound in
the video located at:
https://audiexternal.kzoplatform.com:443/swf/player/311
(Figure 1).
 Open the filler cap to check whether the sound is
affected when the filler cap is open.
Figure 1. QR code for viewing the video with
a QR code reader on phones and tablets.
Alternatively, the video can be accessed
through computer internet browsers at the
link provided in this bulletin.

2.

If the sound of the vehicle matches the sound in the video and the sound is affected when the filler
cap is opened, replace the oil separator breather module.

Page 2 of 5
© 2017 Audi of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of Audi of
America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted
in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Warranty
Claim Type:

 110 up to 48 Months/50,000 Miles.
 G10 for CPO Covered Vehicles – Verify Owner.
 If vehicle is outside any warranty, this Technical Service Bulletin is
informational only.

Service Number:

1726

Damage Code:

0050

Labor Operations:

For A8 and S8:
Oil separator breather
remove +reinstall

1753 1971

20 TU

Air intake distributor
remove + reinstall

2446 1921

470 TU

Oil separator breather
remove + reinstall

1753 1971

20 TU

Air intake distributor
remove + reinstall

2446 1921

600 TU

Additional labor for
adjustment of ACC, top
view camera, and night
vision, if necessary
based on vehicle
equipment

See Elsa

See Elsa

Oil separator breather
remove +reinstall

1753 1971

20 TU

Refrigerant drain + fill

8703 1700

60 TU

For S6 and S7:

For RS7:

Page 3 of 5
© 2017 Audi of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of Audi of
America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted
in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Diagnostic Time:

Air intake distributor
remove + reinstall

2446 1923

690 TU

Additional labor for
adjustment of ACC, top
view camera, and night
vision, if necessary
based on vehicle
equipment

See Elsa

See Elsa

GFF – Checking and
0150 0000
clearing fault codes
included in existing labor
operations

10 TU

Road test prior to
service procedure

0121 0002

10 TU

Road test after service
procedure

0121 0004

10 TU

Technical diagnosis at dealer’s discretion
(Refer to Section 2.2.1.2 and Audi Warranty Online for DADP allowance
details)
Claim Comment:

As per TSB #2040644/7

All warranty claims submitted for payment must be in accordance with the Audi Warranty Policies and Procedures
Manual. Claims are subject to review or audit by Audi Warranty.

Required Parts and Tools
Part Number

Part Description

Quantity

079103542E

Oil separator

1

079129717J

Gasket intercooler left

1

079129717K

Gasket intercooler right

1

N 90442501

Retaining clip

2

Page 4 of 5
© 2017 Audi of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of Audi of
America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted
in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

N 90489801

Retaining clip

2

N 90409501

Retaining clip

2

079145818

Gasket throttle body

1

079145417B

Gasket recirculation valve

2

WHT 001011

O-ring

1

G 013A8J1G

Coolant additive

1

Outside material

Distilled water (obtain locally)

As needed
(Max $10.00)

Additional Information
All parts and service references provided in this TSB (2040644) are subject to change and/or removal. Always
check with your Parts Department and service manuals for the latest information.
©2017 Audi of America, Inc. All rights reserved. Information contained in this document is based on the latest
information available at the time of printing and is subject to the copyright and other intellectual property rights of
Audi of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in
any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these
materials be modified or reposted to other sites without the prior expressed written permission of the publisher.

Page 5 of 5
© 2017 Audi of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of Audi of
America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted
in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.