01 MIL on, DTC P24CC00 and/or P24CB00 stored in the ECM
01 18 71 2051053/1 May 16, 2018.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

Q7

2013 - 2014

All

TDI

Q7

2015

000001 - 000581

TDI

Condition
Customer states:
 MIL on.
Workshop findings:
One of more of the following DTCs is stored in the engine control module (ECM), J623 (address word 0001):
 DTC P24CC00 (Reductant Tank Cap Switch Circuit Range Open).
 DTC P24CB00 (Reductant Tank Cap Switch Circuit).
No relevant component or electrical problems are found when Guided Fault Finding (GFF) is run on the stored
fault codes.

Technical Background
The reducing agent active tank cap switch is prone to sticking, especially in hot and humid climates. If the switch
sticks when vehicle is refilled with AdBlue, this fault will be triggered.

Production Solution
Vehicle is out of production, improved part as a service solution.

Service
1. Remove active tank according to instructions in the Elsa Repair Manual.
2. Replace cap microswitch located on active tank filler neck with improved part 4L0133093B. Reinstall active
tank according to instructions in the Elsa Repair Manual.

Page 1 of 3
© 2018 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.

Warranty
Claim Type:

 110 up to 48 Months/50,000 Miles.
 G10 for CPO Covered Vehicles – Verify Owner.
 If vehicle is outside any warranty, this Technical Service Bulletin is informational
only.

Service Number:

2681

Damage Code:

0050

Labor Operations:

Reductive agent container remove + reinstall

2681 1900

120 TU

Reductive agent inspected + added

2688 3500

20 TU

Replace active tank cap switch

2681 1999

20 TU

GFF

0150 0000

Time stated on
diagnostic
protocol (Max 20
TU)

Road test prior to service procedure

No allowance

0 TU

Road test after service procedure

No allowance

0 TU

Diagnostic Time:

Claim Comment:

As per TSB #2051053/1

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. Please
check the Repair Manual for fasteners, bolts, nuts, and screws that require replacement during the repair.
Part Number

Part Description

Quantity

4L0133093B

Active tank cap switch

01

Additional Information
All parts and service references provided in this TSB (2051053) are subject to change and/or removal.

Page 2 of 3
© 2018 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.

©2018 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.

Page 3 of 3
© 2018 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.