A0123662071199_1

Technical Service Bulletin
01 MIL on P045600 Very Small Leak Detected - NVLD
01 23 66 2071199/1 August 9, 2023.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
All
Not Applicable
A4, A4 allroad,
S4, A5, A5
Cabriolet, A5
Sportback, S5,
2021 – 2023
S5 Cabriolet, S5
Sportback, RS 5,
and RS 5
Sportback
Condition
Customer statement:
• The exhaust emissions warning lamp (MIL) is on.
Workshop findings:
The following DTC may be stored:
• DTC P045600 (P0456) – Very Small Leak Detected” is logged in the event memory.
• No further relevant entries must be logged.
• DTC P045600 – Very Small Leak Detected” has not previously been logged for this vehicle.
Technical Background
The smallest contamination may be sufficient to cause an internal leak in fuel tank pressure sender G400 (NVLD);
this can lead to the DTC “P045600 – Very Small Leak Detected” being set.
Production Solution
Not applicable.
Service
Ensure that there are no leaks in fuel system; check according to the Guided Fault Finding or the Workshop
Manual.
If GFF instructs you to replace fuel tank pressure sender G400 (NVLD), please proceed as follows:
• Please remove fuel tank pressure sender G400 (NVLD) as specified in Workshop Manual.
© 2023 Audi of America, Inc.
Page 1 of 3
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
• Using a compressed air gun, please blow through the NVLD (item 12 in illustration) with several brief pressure
applications of approx. 5 bar. To do so, use the opening on the NVLD marked in the illustration by a green
arrow (figure 1).
Note:
The opening marked with a red circle (figure 1) must not be closed or exposed to compressed air, as this may
cause irreparable damage to the NVLD. In addition, this ensures that possible contamination can be blown out
of the NVLD.
While blowing through the component as described, please hold it in your hand -> the component must not be
clamped or secured in a vice (risk of damage).
Figure 1: Fuel tank pressure sender G400 (NVLD).
Reinstall the fuel tank pressure sender G400 (NVLD), and recheck the system for leaks.
Warranty
Claim Type:
• 110 Up to 48 Months/50,000 Miles.
• G10 for CPO Covered Vehicles – Verify Owner.
© 2023 Audi of America, Inc.
Page 2 of 3
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
• If the vehicle is outside of any warranty, this Technical Service Bulletin is
informational only.
Service Number:
2041
Damage Code:
0050
Labor Operations:
NVLD pressure switch remove + reinstall
2041 1950
See SRT with
associated
operations
Diagnostic Time:
GFF
0150 0000
Time stated on
the diagnostic
protocol (Max 50
TU)
Road test prior to the service procedure
No allowance
0 TU
Road test after the service procedure
No Allowance
0 TU
Claim Comment:
As per TSB 2071199/1
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.
Additional Information
All part and service references provided in this TSB (2071199) 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.
©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.
© 2023 Audi of America, Inc.
Page 3 of 3
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.