Technical Service Bulletin
01 MIL on, no start or rough running (DTC P0087 - Rail fuel pressure too low or DTC P0088 - Rail fuel
pressure too high)
01 13 96 2023360/4 May 13, 2013. Supersedes Technical Service Bulletin Group 01 number 13-79 dated March
20, 2013 for reasons listed below.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

Audi A3

2010 - 2013

All

2.0 TDI clean diesel Engine

Audi Q7

2009 – 2013

All

3.0 TDI clean diesel Engine

Audi A8

2014

All

3.0 TDI clean diesel Engine

Condition
REVISION HISTORY
Revision

Date

Purpose

4

-

Revised header data (Changed MY and applicable models)
Revised Condition (Clarified information)
Revised Technical Background (Clarified information)
Revised Service (Removed steps)

3

3/20/2013

Revised header data (Added MY and applicable models)

2

1/25/2011

Revised header data (Added MY)
Revised Service and Condition
Revised title

1

5/17/2010

Original publication

• MIL on.
• One of the following DTCs is stored in the engine control module (address word 01):
• DTC P0087 (Rail fuel pressure too low)
• DTC P0088 (Rail fuel pressure too high)
• Excess rattling (“diesel clatter”) coming from engine.
• No start or hard starting condition.
• Contaminated fuel found in fuel system.
• Rust or metal debris found in fuel system.

© 2013 Audi of America, Inc.

Page 1 of 5

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
Technical Background
Contaminated or incorrect fuel can cause performance, drivability, and/or fuel delivery problems. Additional
component replacement may be necessary to ensure that no contamination or debris remains after repair.
Reasons for fuel contamination can include: water ingress in the fuel station’s holding tanks, errors made in fuel
transport, or incorrect fuel has been dispensed into the vehicle.

Production Solution
Not applicable.

Service
Note: Failure to follow these directions may result in immediate damage to any replacement parts due to fuel
system contamination.
Inspect the fuel filter housing:
If there is any indication of fuel contamination,
metal shavings/debris, or rust inside the fuel
filter housing (Figures 1 and 2), open a ticket
with the Technical Assistance Center (TAC)
before attempting any repair.

Figure 1. Example of metal shavings and debris on top of fuel
filter. Some shavings can be picked up with a magnet.

© 2013 Audi of America, Inc.

Page 2 of 5

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 2. Example of rust in fuel system caused by
water contamination.
If the fuel filter is not a serviceable unit (example: MY 2011+ Q7 TDI), then inspection must be performed at the
fuel metering valve N290:
Note: Exercise caution when removing the N290. Any dirt/contamination entering the pump may cause
damage.
1. Before removing the N290, carefully clean the surrounding area.
2. If there is no metallic debris found on the N290 or within its housing, refit the N290 valve immediately. Make
sure both O rings are undamaged. If there is any damage to either O ring, the high pressure fuel pump must
be replaced.
3. When fitting the N290, slightly wet the lower O ring with diesel fuel or oil.
4. Push in the N290 using only light pressure.
5. Tighten both M5 bolts hand tight – do not lubricate the thread.
6. Pre-tighten with 2 Nm, then 6.5-7 Nm.

© 2013 Audi of America, Inc.

Page 3 of 5

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 there is any indication of fuel contamination,
metal shavings/debris, or rust inside the N290
valve (Figures 3 and 4), open a ticket with the
Technical Assistance Center (TAC) before
attempting any repair.

Figure 3. Metallic debris in N290 housing.

Figure 4. Metallic debris on screen of N290 metering valve.

Warranty
This TSB is informational only and not applicable to any Audi warranty.

© 2013 Audi of America, Inc.

Page 4 of 5

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
Additional Information
All parts and service references provided in this TSB are subject to change and/or removal. Always check with
your Parts Department and service manuals for the latest information.

© 2013 Audi of America, Inc.

Page 5 of 5

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.