Technical Service Bulletin
35 Gearbox Malfunction Warning, DTC P0C2900 in the TCM
35 24 51 2050723/6 May 22, 2024. Supersedes Technical Service Bulletin Group 35 number 24-48 dated March
12, 2024 for reasons listed below.
Model(s)

Year

A3, and A3
Cabriolet

2017 - 2018

S3

2018

VIN Range

Vehicle-Specific Equipment

All

0IJ

Condition
REVISION HISTORY
Revision

Date

Purpose

6

-

Revised Service (Note removed)

5

03/12/2024

Revised header (removed models)
Revised Condition (updated Workshop findings)

4

10/10/2023

Revised Service (Note added)

Customer states:
• The “Gearbox Malfunction” message has appeared in the Drivers Information Screen (DIS).
Workshop findings:
the following DTC may be logged in the transmission control module (TCM), -J217- (address word 0002):
• DTC P0C2900 (Auxiliary Transmission Fluid Pump Driver Circuit Performance)
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

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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

Figure 1. 0GC Gearbox Components.
Production Solution
Improved auxiliary hydraulic pump in production.
Service
Obtain the transmission
identification
information from the
bell housing (Figure 2).

Figure 2. Transmission identification example.
Explanation of data on gearbox:
Gearbox code: STA (green box)
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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
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 or
Figure 4), and the parts information listed
below. The event memory of the gearbox
Figure 3. Attachments tab in ElsaPro.
electronics (diagnostic address 002) must then be
erased according to the attached instructions.

Figure 4. Attachments slide in Elsa2Go.
For an example of the repair procedure, see the video located at:
https://audi-external.kzoplatform.com/player/medium/2535675175601443997
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).

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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
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

3479 5599

350 TU

3479 5599

380 TU

0150 0000

Time stated on
diagnostic protocol

(Front Wheel Drive Only)
Replace hydraulic pump
(All Wheel Drive Only)
Diagnostic Time:

GFF

(Max 50 TU)

Claim Comment:

Charge Battery

2706 8950

See SRT with
associated
operations

Road test prior to service procedure

No allowance

0 TU

Road test after service procedure

No allowance

0 TU

As per TSB 2050723/6

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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
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

0.5

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 4
drive

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)

3

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

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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
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.
©2024 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.

© 2024 Audi of America, Inc.
Internal

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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.