01 MIL on, DTC P203B00 stored in the ECM - TDI clean diesel only
01 18 75 2035368/6 June 12, 2018. Supersedes Technical Service Bulletin Group 01 number 15-35 dated July
29, 2015 for reasons listed below.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

A8

2013 - 2014

All

TDI clean diesel

A6, A7, and
Q5

2014 - 2016

All

TDI clean diesel

Condition
REVISION HISTORY
Revision

Date

Purpose

6

-

Revised title
Revised Service (Added Note)
Revised Warranty (Updated Labor Operations and added Claim Types)

5

07/30/2015

Revised header data (Added models)
Revised Technical Background (Completely revised)
Revised Service (Completely revised)
Revised Warranty (Added time for software update; updated TU)

4

12/18/2014

Revised Warranty (Updated Labor Operations)

Customer states:
 MIL on
Workshop findings:
The following DTC is stored in the engine control module (ECM), J623 (address word 0001):
 DTC P203B00 (Reductant Level Sensor Circuit Range/Performance)

Technical Background
Diagnostic software in the control unit for reduction agent metering system, J880 (address word 00AC), has been
optimized to avoid this fault. In some cases, the AdBlue level sensor may still require replacement.
Improved level sensor and level sensor diagnostics.

Page 1 of 4
© 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.

Production Solution
Improved level sensor and level sensor diagnostics.

Service
Update the parameters:
1. Follow all instructions in TSB 2011732: 00 Software Version Management (SVM), operating instructions.
2. Update the parameters of the control unit for reduction agent metering system, J880 (address code 00AC),
using SVM code ACA001.
3. If the fault code P203B00 is stored with the
symptom code (DFCC) 65540 or 65541 (Figure
1), replace the reduction agent level sensor
(delivery unit) in addition to updating the
parameters. Follow the instructions in the Elsa
Repair Manual (Engine >> 6-cylinder TDI
Common Rail Engine (Gen II) >> 26 Exhaust
System, Emission Controls, Selective Catalytic
Reduction System).
Note:
If the DTC and symptom code are

Figure 1. Location of symptom code.

not stored in the ECM exactly as in
Step 3, this TSB does not apply.
Do not contact TAC unless the problem persists after the software/hardware update or if there is a problem with
the SVM process.

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:

2683

Damage Code:

0040

Page 2 of 4
© 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.

Labor Operations:

For A8:
Reductive agent tank remove + reinstall

2681 1900

130 TU

Reductive agent supply module remove + reinstall

2683 1950

30 TU

Reductive agent inspect + add

2688 3550

30 TU

Reductive agent tank remove + reinstall

2681 1900

110 TU

Reductive agent supply module remove + reinstall

2683 1950

20 TU

Reductive agent inspect + add

2688 3550

10 TU

Q5 reductive agent tank remove + reinstall

2681 1900

90 TU

Q5 reductive agent supply module remove +
reinstall

2683 1950

30 TU

Reductive agent inspect + add

2688 3550

10 TU

Software update

2360 2599

50 TU

GFF

0150 0000

Time stated on
diagnostic
protocol (Max
80 TU)

Road test prior to service procedure

No allowance

0 TU

Road test after service procedure

No allowance

0 TU

For A6 and A7:

For Q5:

For all vehicles:

Diagnostic Time:

Claim Comment:

As per TSB #2035368/6

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.

Page 3 of 4
© 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.

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

G 052910A4

Urea solution AdBlue

As needed (Max 3)

4G0131969E

A6/A7/A8 Delivery unit for reduction agent metering system

1

8R0131969D

Q5 Delivery module for urea solution AdBlue

1

Additional Information
All parts and service references provided in this TSB (2035368) are subject to change and/or removal. Please
check the Repair Manual for fasteners, bolts, nuts, and screws that require replacement during the repair.
©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 4 of 4
© 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.