142120390062

Technical Service Bulletin
21 MIL on (DTC P029900 - wastegate linkage disconnected)
21 14 21 2039006/2 November 26, 2014. Supersedes Technical Service Bulletin Group 21 number 14-20 dated
November 17, 2014 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
A4, A5,
A5 Cabriolet,
A6, Q5, TT
2013 - 2014
All
2.0 TFSI
Condition
REVISION HISTORY
Revision
Date
Purpose
2
-
Revised title (Corrected DTC)
1
11/17/2014
Initial publication
• MIL 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).
Technical Background
The circlip connecting the turbo wastegate actuator rod and the wastegate flap lever can fall of due to low tension
of the clip. Consequently, the wastegate linkage becomes disconnected, causing MIL on and DTC P029900.
Production Solution
Clip from improved material with higher tension.
© 2014 Audi of America, Inc.
Page 1 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
Service
1. Visually check that the wastegate linkage is
disconnected (Figure 1) before proceeding with
the help of a mirror or boroscope. If this is not the
case, this bulletin does not apply.
Figure 1. Disconnected wastegate linkage.
2. Remove catalyst according to ELSA instructions
to gain access to turbocharger wastegate linkage.
3. Reconnect wastegate linkage and secure with a
new circlip (separately available in ETKA).
Note:
It is not necessary to replace the turbocharger
itself. Claims are subject to review or audit by
Audi Warranty.
4. Clear fault codes.
© 2014 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:
2130
Damage Code:
0010
Labor Operations:
For A4, A5, A5 cab, Q5:
2673 1913
190 TU
Catalytic converter remove + reinstall
2673 1963
90 TU
Front muffler remove + reinstall
2025 1913
90 TU
For TT:
2673 1913
160 TU
2130 9999
20 TU
GFF - clearing fault codes included in existing
labor operations
No allowance
0 TU
Road test prior to service procedure
No allowance
0 TU
Road test after service procedure
0121 0004
10 TU
Catalytic converter remove + reinstall
For A6:
Catalytic converter remove + reinstall
For all:
Reconnect wastegate linkage
Diagnostic Time:
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 # 2039006/2
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
Always consult your parts department and ETKA for the latest part numbers.
Part Number
Part Description
Quantity
N 0124394
Lock washer linkage vacuum unit 8MM
1
© 2014 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
Additional Information
All parts and service references provided in this TSB (2039006) are subject to change and/or removal. Always
check with your Parts Department and service manuals for the latest information.
© 2014 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.