A4821082063526_1

48 DTC B116831 is stored in the ABS control module
48 21 08 2063526/1 August 2, 2021.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
A3, A3
Cabriolet,
S3, TT,
TTS, and
TTRS
2016 - 2022
All
Not Applicable
A3
Sportback,
A3 e-tron
2016 - 2018
All
Not Applicable
RS 3
2017 - 2022
All
Not Applicable
Condition
Customer states:
 Several warning lamps (ABS, TPMS, etc.) sporadically come on when the vehicle is started (both manually
and in start/stop mode).
Workshop findings:
The following DTC is stored in the ABS control module, J104 (address word 0003):
 DTC B116831 (Steering angle sensor no signal) with symptom code 166.
Technical Background
There is a voltage drop in power steering control module, J500 (address word 0044).
Production Solution
Not applicable.
Service
Possible root causes:
 This DTC is logged in the power steering control module, J500 (address word 0044) briefly, because it does
not participate in the data bus communication during the start procedure.
Page 1 of 3
© 2021 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.
 This can be caused by a voltage drop in the power steering control module, J500 (address word 0044).
 The main fuse carrier may be the cause.
1. When the vehicle is started, the voltage should not
drop by more than 1 Volt at contact 4 on the fuse
carrier. This is power supply to the power steering
control module, J500 (address word 0044) (Figure 1).
Figure 1. Fuse carrier’s power supply to the power
steering control module, J500 (address word 0044).
2. If the voltage drops more than 1 Volt then the fuse carrier must be replaced. Replace the fuse carrier
according to the instructions in the Elsa Repair Manual.
3. If this procedure does not lead to an improvement, continue the diagnosis on other components of the power
supply for the power steering. Review the battery history data to help find the voltage drop.
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:
9794
Damage Code:
0040
Labor Operations:
Check current distributor
9794 0199
20 TU
Replace current distributor
9794 5599
30 TU
GFF
0150 0000
Time stated on
the diagnostic
protocol (Max 30
TU)
Diagnostic Time:
Page 2 of 3
© 2021 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.
Claim Comment:
Road test prior to the service procedure
No allowance
0 TU
Road test after the service procedure
No allowance
0 TU
As per TSB #2063526/1
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
Fuse carrier
01
Additional Information
All part and service references provided in this TSB (2063526) 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.
©2021 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 3 of 3
© 2021 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.