A4524372072549_1

Technical Service Bulletin
45 DTC C101AF1, C101BF1, C101CF1, C101DF1 "magnetic field too low" stored in ABS control unit
45 24 37 2072549/1 January 12, 2024.
Model(s)
Year
A3, S3, and RS 3 2021 – 2024
VIN Range
Vehicle-Specific Equipment
All
Not Applicable
Condition
Customer statement:
• Multiple messages/Pre sense fault message in the cluster.
Workshop findings:
• DTCs C101AF1, C101BF1, C101CF1, C101DF1 “magnetic field too low” is stored in one or more speed
sensors in the ABS control unit J104 (address word 0003).
• DTCs U112300, U112200 “Databus error value received; Databus implausible message” stored in the
Distance Regulation control unit J428 (address word 0013).
Technical Background
Not applicable.
Production Solution
This bulletin will be updated when more information is available. A solution is currently under development.
Service
Proceed as follows:
1. Delete all DTCs stored in the ABS control unit J104 (address word 0003) and Distance Regulation control unit
J428 (address word 0013).
2. Make sure the speed sensors are free of debris, oil residues, grease or dirt.
3. Perform a short road test.
4. Check if DTCs C101AF1, C101BF1, C101CF1, C101DF1 returned to ABS control unit, if not release the
vehicle.
Do not replace speed sensors! Parts replacement does not solve this issue. Claims for replaced parts
will be subject to review.
© 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.
Technical Service Bulletin
Warranty
This TSB is informational only and not subject to any Audi Warranty.
Additional Information
All part and service references provided in this TSB (2072549) are subject to change and/or removal. Always
check with your Parts Department and/or ETKA for the latest information and parts bulletins. Please check the
Repair Manual for fasteners, bolts, nuts, and screws that require replacement during the repair.
©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
Page 2 of 2
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.