A2022412050276_7

Technical Service Bulletin
20 MIL on or difficulty refueling, DTC P045100, P044100, P202500, and/or P045300 are stored in the ECM
20 22 41 2050276/7 February 8, 2022. Supersedes Technical Service Bulletin Group 20 number 20-26 dated
April 23, 2020 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
A6, and A7
2016 – 2018
All
3.0 liter engine
Condition
REVISION HISTORY
Revision
Date
Purpose
7
-
Revised Required Parts and Tools (Increased reimbursement amount for outside
materials)
6
04/23/2020
Revised header (Extended applicable VINs)
5
02/12/2020
Revised header (Extended applicable VINs)
Revised Required Parts and Tools (Updated tool number)
The customer has one or more of the following concerns:
• The customer has problems filling the fuel tank (the fuel nozzle keeps clicking off).
• MIL may be illuminated.
Workshop findings:
• Water and/or ice is found in the EVAP canister reservoir and natural vacuum leak detection (NVLD or J909)
pressure switch.
Also, one or more of the following DTCs is found in the engine control module (ECM), J623 (address word 0001):
• DTC P045100 (pressure sensor for the tank ventilation system, implausible signal).
• DTC P044100 (tank ventilation system, through-flow faulty).
• DTC P202500 (Evaporative Emissions (EVAP) Fuel Vapor Temperature Sensor Performance).
• DTC P045300 (EVAP Emission Contr.Sys.Press.Sensor High Input).
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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
Technical Background
Water enters through the tank ventilation system. The water can flow through the NVLD pressure switch into the
EVAP canister and freeze in cold temperatures.
Production Solution
Not applicable.
Service
Figure 1. How to determine which steps to take Version 1 (~4mm gap) or Version 2 (gap less than 2mm).
Version 1 (A6 only):
1. If the updated wheel liner has not yet been installed. Then install the updated wheel liner, which has closed
slots around the NVLD filter.
• Remove the EVAP canister, ventilation tube, and NVLD pressure switch.
• Remove all components mounted on the EVAP canister.
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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
2. Weigh the EVAP canister:
• If it weighs more than 2650
grams, replace the EVAP
canister + attached filter,
ventilation tube (Figure 2), and
NVLD pressure switch (J909).
• If it weighs less than 2650
grams, then replace the
ventilation tube and the J909.
Figure 2. Ventilation tube of the EVAP canister.
Version 2:
If an updated wheel liner has already been installed at previous repair or in the factory, the NVLD filter needs to
be relocated into the engine compartment to prevent moisture from entering the EVAP system, under extreme
customer use conditions.
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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
1. Replace the EVAP canister only if
the weight is greater than 2650
grams.
•
Install a new J909.
• Install the NVLD filter (new part
number, Version 2) in the
engine compartment on the
left frame rail just in front of the
ABS module, secure with M6
nut. (Figure 3).
Figure 3. Installing the new NLVD filter.
2. Connect the filter to the 5/8” ID
rubber hose via 1x plastic elbow
and 1x rubber elbow (Figure 4).
Figure 4. Connecting the NLVD filter.
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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
3. Route the 5/8” ID rubber hose behind
the strut and brake lines from the new
filter position to the J909, along the
orange battery cable (Figures 5 and
6). Then secure with zip ties.
Note:
5/8” ID rubber hose needs to be
routed in a way that there are no
sharp bends to prevent kinking.
Figure 5. Route the 5/8” ID rubber hose from the new filter position to
the J909.
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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 6. Routing the rubber hose.
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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
4. Routing details to the J909, along the
orange battery cable. Add zip-ties
every 12 inches (Figure 7).
Figure 7. Where to zip tie the rubber hose to the battery cable.
5. Before connecting 5/8” ID rubber
hose to 90 degree connector, cut to
length, as needed. Connection details
to the J909 are shown in (Figures 8
and 9).
Figure 8. Connecting to the J909.
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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
Figure 9. Closer look at the connections.
6. Remove original NVLD filter assembly.
(Figure 10).
Figure 10. Remove original NVLD filter.
Warranty
Claim Type:
• 110 up to 48 Months/50,000 Miles.
• G10 for CPO Covered Vehicles – Verify Owner.
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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
• If the vehicle is outside any warranty, this Technical Service Bulletin is informational
only.
Service Number:
2041
Damage Code:
0010
Labor Operations:
Wheel housing liner remove + reinstall
6676 1900
See SRT
(V1 and 2)
Ventilation tube with filter remove + reinstall
2048 1912
See SRT
(V1 and 2)
Activated charcoal filter remove + reinstall
2025 1900
See SRT
(V1 and 2)
NVLD pressure switch remove + reinstall
2041 1950
See SRT
(V1 and 2)
Install NVLD filter in optimized position
2041 2399
including routing of rubber hose
Diagnostic Time:
GFF
280 TU
(V2 only)
0150 0000
Time stated on
the diagnostic
protocol (Max 10
TU) (V1 and 2)
Claim Comment:
Road test prior to service procedure
No allowance
0 TU
Road test after service procedure
No allowance
0 TU
As per TSB 2050276/7
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.
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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
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
4G0201997BD
Ventilation tube with filter (Version 1)
01
8K0906253L
NVLD pressure switch (Version 1 and 2)
01
4G0201801D
Activated charcoal filter (Version 1 and 2)
01 (If necessary)
4G0810171B
Wheel liner (Version 1)
01
8R0201232E
Filter (Version 1 and 2)
01 (If necessary)
1C0906621A
NVLD filter (Version 2)
01
N 90887703
M6 nut (Version 2)
01
5Q0906272
Rubber elbow (Version 2)
02
See ETKA
Fasteners, Bolts, Nuts, and Screws as needed per the
See ETKA/ELSA
Repair Manual
Part Number
Part Description
Quantity
Outside material
Aftermarket 5/8”ID rubber hose (Version 2)
12 feet
Outside material
Aftermarket 5/8”OD elbow (Version 2)
02
Outside material
Aftermarket hose clamps (Version 2)
06
Outside material
Zip-ties
30
Note:
No more than $60 will be covered by Warranty. Enter total amount using outside part number OUTSIDEMAT.
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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
Tool Number
Tool Description
CPWP15
Digital scale (MRT tool (or equivalent)
Additional Information
All parts and service references provided in this TSB (2050276) are subject to change and/or removal.
©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.
© 2022 Audi of America, Inc.
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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.