Technical Service Bulletin
17 MIL on; whistling noises from engine compartment (DTC P2279 and/or P0507)
17 16 69 2040644/4 March 9, 2016. Supersedes Technical Service Bulletin Group 17 number 15-66 dated
October 14, 2015 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

4

-

Revised title

3

10/14/2015

Revised Production Solution (Completely revised)
Revised Required Parts and Tools (Updated oil separator part number)

2

6/3/2015

Revised Warranty (Updated Service Number)

• 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 01):
• 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.

© 2016 Audi of America, Inc.

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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.

Technical Service Bulletin
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://audi-external.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.

© 2016 Audi of America, Inc.

Page 2 of 4

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.

Technical Service Bulletin
Warranty
Claim Type:

Use applicable claim type. 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

620 TU

For S6 and S7:

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

See Elsa

For RS7:

Diagnostic Time:

Oil separator breather remove +reinstall

1753 1971

20 TU

Air intake distributor remove+reinstall

2446 1923

710 TU

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

See Elsa

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

0150 0000

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 #2040644/4

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.

© 2016 Audi of America, Inc.

Page 3 of 4

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.

Technical Service Bulletin
Required Parts and Tools
Part Number

Part Description

Quantity

079103542D

Oil separator

1

079129717J

Gasket intercooler left

1

079129717K

Gasket intercooler right

1

N 90442501

Retaining clip

2

N 90489801

Retaining clip

2

079145818

Gasket throttle body

1

079145417B

Gasket recirculation valve

2

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.

© 2016 Audi of America, Inc.

Page 4 of 4

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.