A201544 2037739-

Technical Service Bulletin
20 Engine warning light on (DTC P310B00 - Low fuel pressure regulation fuel pressure outside
specification)
20 15 44 2037739/2 January 13, 2015. Supersedes Technical Service Bulletin Group 20 number 14-35 dated July
17, 2014 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
RS5,
RS5 Cabriolet
2013 - 2014
All
Not Applicable
Condition
REVISION HISTORY
Revision
Date
Purpose
2
-
Revised header data (Added customer code)
1
7/17/2014
Initial publication
• Customer may report that the check engine light comes on intermittently.
• DTC P310B00 DFC 2638 (Low fuel pressure regulation fuel pressure outside specification) is stored in the
engine control module (ECM), J623 (address word 01).
Technical Background
The DTC is caused by conflicting tolerances of the fuel pump at idle speed/part load.
Production Solution
Not applicable.
Service
1. Check the low pressure fuel pump duty cycle using ECM MVB “Fuel pump, specified value” with the engine at
idle speed.
2. If the value is 25.5% or lower (closer to 0%) at idle speed, replace the low pressure fuel pump.
3. After replacement, clear all ECM faults.
4. Check ECM MVB “Fuel pump, specified value” with the engine at idle speed, it should now be higher than
25.5%.
© 2015 Audi of America, Inc.
Page 1 of 2
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
Warranty
Claim Type:
Use applicable claim type. If vehicle is outside any warranty, this Technical Service Bulletin
is informational only.
Service Number:
2066
Damage Code:
0040
Labor Operations:
Fuel pump remove+reinstall
2066 1900
130 TU
Diagnostic Time:
GFF
0150 0000
Time stated on
diagnostic
protocol
(Max 30 TU)
Technical diagnosis at dealer’s discretion
(Refer to Section 2.2.1.2 and Audi Warranty Online for DADP allowance details)
Claim Comment:
As per TSB #2037739/2
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 parts and service references provided in this TSB (2037739) are subject to change and/or removal. Always
check with your Parts Department and service manuals for the latest information.
© 2015 Audi of America, Inc.
Page 2 of 2
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.