Technical Service Bulletin
13 Starter/generator drive belt is noisy or came off, DTC P2BA300 may be stored in the ECM
20 22 50 2061461/5 October 27, 2022. Supersedes Technical Service Bulletin Group 13 number 21-15 dated July 14,
2021, for reasons listed below.

Model(s)

Year

A6

2019 – 2021

VIN Range

Vehicle-Specific Equipment

All

2.0 TFSI

A4, A4 allroad,
A5 Cabriolet, A5
Sportback, Q5,

2021

and Q5
Sportback

Condition
REVISION HISTORY
Revision

Date

Purpose

5

-

Revised Service solution

4

07/14/2021

Revised Warranty (Updated Labor Operation)

3

05/26/2021

Revised header (Added A4 and A5)

Customer states:

Page 1 of 7
© 2022 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.

Technical Service Bulletin
•

There is a grinding/squeaking/tweeting noise coming from the engine compartment.

Or
•

A message in the driver information system (DIS) displays "Electrical system: Malfunction! Please go to
workshop" (if the poly V-belt has fallen off).

Workshop findings:
•

The grinding/squeaking/tweeting noise is coming from the poly V-belt (alternator belt).

Or
•

The poly V-belt is damaged or has fallen off the wheel roller.

The following DTC may be stored in the engine control module (ECM), J623 (address word 0001):
•

DTC P2BA300 (Starter/Generator mechanical performance).

Technical Background
Deviation on the rollers of the belt tensioner.

Production Solution
Not applicable.

Service
Page 2 of 7
© 2022 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.

Technical Service Bulletin
Scenario 1: Grinding, squeaking, or tweeting noises
1. Let the engine run at idle speed and assess the noise.
An example of the noise can be found in the following video:
https://audiexternal.kzoplatform.com/player/medium/1823282939031459668
(Figure 1).

Figure 1. QR code for supporting
video.
2. For final confirmation of the source of the noise, spray the inside of the poly V-belt with a little tap water.
One spray blast out of a commercially available water spray bottle is enough. The noise should disappear
as a result.
3. If the noise disappears after spraying with water, replace the poly V-belt and belt tensioner. If a new belt
tensioner has already been installed, do not replace it again.

Scenario 2: Poly V-belt damaged or fallen off
1. Replace the belt tensioner and poly V-belt. If a new belt tensioner has already been installed, do not
replace it again.

Page 3 of 7
© 2022 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.

Technical Service Bulletin
Check for correct belt running alignment after poly V-belt and tensioner replacement as follows:
1. Run the engine at idle speed.
2. The belt must not protrude forward or backward over the roller edge of the tensioner (Figure 2, red
marks).

Figure 2. Check to ensure that the poly V-belt is not protruding in either direction.
Explanation of Figure 2 (view from above into the engine compartment):
A = poly V-belt.

Page 4 of 7
© 2022 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.

Technical Service Bulletin
B = tensioning roller of the belt tensioner.

Warranty
Claim Type:

•
•
•

Service

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.

1373

Number:
Damage Code:

•
•

Labor

0020 (Noisy belt).
0015 (Belt came off).

Ribbed belt remove + install

1372 1915

See SRT with associated operations

Belt tension damper remove +

1373 1965

See SRT with associated operations

Operations:
install
Check Poly V-Belt run alignment 1372 0199

10 TU

Diagnostic

GFF – Checking and clearing

Time stated on the diagnostic protocol

Time:

fault codes

0150 0000

(Max 20 TU)

Page 5 of 7
© 2022 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.

Technical Service Bulletin

Claim

Road test prior to the service

No

procedure

allowance

Road test after the service

No

procedure

allowance

0 TU

0 TU

As per TSB 2061461/5

Comment:
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 check with your Parts Department and/or ETKA for the latest information and parts bulletins.
Part Number

Part Description

Quantity

See ETKA

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

See ETKA/ELSA

See ETKA

Belt Tensioner

01

See ETKA

Poly-V Belt

01

Additional Information
All parts and service references provided in this TSB (2061461) are subject to change and/or removal.

Page 6 of 7
© 2022 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.

Technical Service Bulletin
©2022 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.

Page 7 of 7
© 2022 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.