A9723902069123_1

Technical Service Bulletin
97 MIL on: DTC U064100 or U064000 for fuel tank breather - 2.0 ltr. TFSI EA888
97 23 90 2069123/1 January 17, 2023.
Model(s)
Year
A4, A4 allroad,
A5, A5 Cabriolet,
2021 – 2022
and A5
Sportback
VIN Range
Vehicle-Specific Equipment
All
Not Applicable
Condition
Customer states:
The check engine warning lamp comes on.
Workshop findings:
One or more of the following DTCs are stored sporadically in the Engine Control Module, J623 (address word 01):
• DTC U064000: Lost Communication with EVAP Fuel Vapor Temperature Sensor Circuit
• DTC U064100: Lost Communication with EVAP System Pressure Sensor/Switch Circuit "A
Technical Background
In certain circumstances, EMI may negatively influence the signal from the fuel tank breather system.
Production Solution
Not applicable.
Service
For DTC’s that are statically stored, continue with normal diagnosis, in this case the TSB does not apply.
Note: Replacing the tank pressure sender will not fix the problem.
For DTC’s that are stored sporadically, the wire harness will need to be modified using the steps below.
Page 1 of 5
© 2023 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
1. Remove plenum chamber covers
(green arrows, Figure 1)
Release wiring harness securing
clips (yellow arrows, Figure 1).
Using a seam ripper, expose
the wiring harness as shown in
Figure 2.
Figure 1: Plenum chamber covers (green arrows).
Page 2 of 5
© 2023 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
2. Isolate the yellow/grey wire (triple
twisted wire; blue arrow, figure 2)
in the left bundle.
Isolate the yellow/purple wire in
the right bundle (black arrow,
Figure 2).
Cut the yellow/grey wire at the
blue arrow and unravel it in the
direction of the plenum chamber
up to the red arrow.
Cut the yellow/purple wire at the
black arrow.
Figure 2: Wires isolated for modification.
3. Using wire harness repair set
VAS 1978 B, perform the
following:
Connect the untwisted
yellow/grey wire (plenum
chamber side) from the left
bundle to the yellow/purple wire in
the right bundle (engine side).
Connect the remaining
yellow/purple wire (plenum side)
to the yellow/grey wire (engine
side).
Page 3 of 5
© 2023 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
Figure 3: wire modification complete.
4. Clear DTCs and recheck functionality. If ok, wrap the wiring harness in adhesive tape N 10729002 and
reassemble the vehicle.
Warranty
Claim Type:
• 110 up to 48 Months/50,000 Miles.
• G10 for CPO Covered Vehicles – Verify Owner.
• If the vehicle is outside of any warranty, this Technical Service Bulletin is
informational only.
Service Number:
9709
Damage Code:
0040
Labor Operations:
Remove and install
plenum chamber cover
8522 1900
See SRT with associated
operations
Repair wiring harness
9709 4152
See SRT with associated
operations
Modify wiring harness
9709 4999
10 TU
GFF
0150 0000
Time stated on the
diagnostic protocol (Max
100 TU)
Road test prior to the
service procedure
No allowance
0 TU
Road test after the
service procedure
0121 0004
10 TU
Diagnostic Time:
As per TSB 2069123/1
Claim 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
Page 4 of 5
© 2023 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
See ETKA
Fasteners, Bolts, Nuts, and Screws as needed per the
Repair Manual
See ETKA/ELSA
000979940
Butt connector
2
N 10729002
Adhesive Tape
.2
Additional Information
All parts and service references provided in this TSB (2069123) 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.
Page 5 of 5
© 2023 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.