Technical Service Bulletin
35 Gearbox Malfunction Warning, DTC P0C2900, P176F00, P176E00 or P175E00 stored in the TCM
35 23 43 2050723/3 August 2, 2023. Supersedes Technical Service Bulletin Group 35 number 18-31 dated June
27, 2018, for reasons listed below.
Model(s)

Year

A3, and A3
Cabriolet

2017 – 2018

S3

2018

VIN Range

Vehicle-Specific Equipment

All

7 Speed S-Tronic

Condition
REVISION HISTORY
Revision

Date

Purpose

3

-

Revised Condition (Multiple DTCs added)
Revised Technical Background (Concern Described)
Revised Service (Procedure and Repair Changed)
Revised Warranty Table (Labor operations changed)
Revised Attachments (Repair instructions added)

2

06/27/2018

Revised Service (Added transmission identification instructions and photo)

1

06/13/2018

Initial publication

Customer states:
• The “Gearbox Malfunction” message has appeared in the Drivers Information Screen (DIS).
Workshop findings:
One or more of the following DTC(s) may be logged in the transmission control module (TCM), J217 (address
word 0002):
• DTC P0C2900 (Auxiliary Transmission Fluid Pump Driver Circuit Performance)
And/Or
• DTC P175E00 (clutch 1 closes unintentionally)
And/Or
• DTC P176F00 (clutch 2 closes unintentionally)
And/Or
• DTC P176E00 (clutch 2 opens unintentionally)
And/Or
• DTC P175D00 (clutch 1 opens unintentionally)
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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
And/Or
• DTC P189900 (clutch 2 function restriction)
And/Or
• DTC P060700 (control module implausible)
And/Or
• DTC P081000 (control module implausible)
Various other DTCs may also be logged with the above DTCs in the transmission control module (TCM), J217
(address word 0002).

Technical Background
Component related issue of auxiliary hydraulic pump (Figure 1).
Legend for picture below:
Item 1: auxiliary hydraulic pump 1 for gearbox oil (V475)
Item 2: electrical connection for auxiliary hydraulic pump 1 for gearbox oil (V475)
Item 3: electric motor for auxiliary hydraulic pump 1 for gearbox oil (V475)
Item 4: main ATF pump

Figure 1. 0GC Gearbox Components.
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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
Production Solution
Improved auxiliary hydraulic pump in production.

Service
Obtain the transmission identification
information from the bellhousing
(figure 2).

Figure 2: Transmission identification example.
Explanation of data on gearbox:
Gearbox code: STA (green box).
Gearbox Production date: 300916 = 03.09.2016 (blue box).
Date format: Day/Month/Year
• If the gearbox production date is after 26.09.2017, this TSB does not apply. Proceed according to Guided
Fault Finding. Please note that in this case, the costs for the repair cannot be billed under this TSB.
• If the gearbox production date is on or before 26.09.2017, continue as described below.
Scenario 1: Only required for vehicles on which the 34L4 Service Action has not been performed.
• If the 34L4 Service Action is open for the vehicle, perform it completely and this TSB does not apply.
Scenario 2: Only required for vehicles on which the 34L4 Service Action has already been performed and no
parts were replaced as a part of the campaign.
The 34L4 Service Action has been performed on the vehicle, and the auxiliary hydraulic pump was not replaced,
and only the DTC “P0C2900 – Auxiliary Transmission Fluid Pump Driver Circuit Performance” is logged in the
transmission control module (TCM), J217 (address word 0002).
Replace the auxiliary hydraulic pump according to the
instructions attached to this TSB (figure 3), and the
parts information listed below. The event memory of
the gearbox electronics (diagnostic address 002) must
then be erased according to the attached instructions.

Figure 3: Attachments tab in the repair manual.

For an example of the repair procedure, see the video located at:
https://audi-external.kzoplatform.com/player/medium/2535675175601443997

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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
This video is also attached to this TSB under the
attachments tab in the workshop manual, and can be
accessed with the QR code shown here (figure 4).

Figure 4: QR code for viewing the supporting 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.
Scenario 3: Only applies if the 34L4 Service Action has been performed and the auxiliary hydraulic pump was
replaced as a part of the campaign.
If the 34L4 Service Action has been performed on the vehicle and the auxiliary hydraulic pump was replaced as a
part of the campaign, this TSB does not apply and you should proceed according to Guided Fault Finding.

Warranty
Claim Type:

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

Service Number:

3479

Damage Code:

0010

Labor Operations:

Remove and install gearbox

3435 19 xx

See SRT with
associated
operations.

Replace hydraulic pump (Front Wheel Drive
Only)

3479 5599

350 TU

Replace hydraulic pump (All Wheel Drive Only) 3479 5599

380 TU

GFF

0150 0000

Time stated on
diagnostic
protocol (Max 50
TU)

Road test prior to service procedure

No allowance

0 TU

Diagnostic Time:

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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
Road test after service procedure

No allowance

0 TU

Claim Comment:
As per TSB 2050723/3
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
The part numbers mentioned in this TSB are different than the ones listed in ETKA. Only use parts listed in this
TSB, this includes superseding part numbers!
Part Number

Part Description

Quantity

See ETKA

Fasteners, Bolts, Nuts and Screws as needed per the
Repair Manual

See ETKA/ELSA

D 174 003 M2

Sealant

1

G 055 529 A2

Dual clutch gearbox oil

7

WHT 000 729 A

Bolt (For noise insulation)

5

N 103 320 02

Nut (For transverse link)

6

N 015 081 6

Nut (For coupling rod)

2

N 912 010 01

Bolt (For pendulum support)

1

N 107 848 01

Bolt (For pendulum support)

1

N 107 847 01

Bolt (For pendulum support)

1

N 105 524 02

Bolt (For steering rack)

2

N 908 461 02

Bolt (For front propeller shaft) only for vehicles with
all-wheel drive

3

N 910 669 01

Bolt (For center propeller shaft) only for vehicles with
all-wheel drive

4

WHT 005 179

Bolt (For rear propeller shaft) only for vehicles with
all-wheel drive

3

N 911 082 01

Bolt For drive shaft (For gearbox mounting)

6

Or

or

N 909 910 02

12

N 105 524 04

Bolt (For assembly mounting)

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3

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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
N 107 854 01

Bolt (For assembly mounting)

6

N 910 889 01

Bolt (For bevel box) only for vehicles with all-wheel
drive

4

0BH 325 147

Retaining clip (For mechatronics unit cover)

1

0GC 927 377

Gasket (mechatronics unit cover)

1

0GC 398 008 D

Repair kit (For auxiliary hydraulic pump)

1

06B 105 313 C

Needle bearing (order to VIN)

1

or
06B 105 313 D

Additional Information
All parts and service references provided in this TSB (2050723) are subject to change and/or removal.
©2023 Audi of America, Inc. All rights reserved. The 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.

© 2023 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.