20 MIL on (DTC P310B - Low fuel pressure regulation / pressure out of specification)
20 17 89 2043758/5 May 24, 2017. Supersedes Technical Service Bulletin Group 20 number 16-76 dated August
18, 2016 for reasons listed below.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

A4

2012 - 2016

All

2.0L and 3.0L engine

A6, A7,

2012 - 2018

All

2.0L and 3.0L engine

A5, A5
cabriolet,
Q5

2012 - 2017

All

2.0L and 3.0L engine

Condition
REVISION HISTORY
Revision

Date

Purpose

5

-

Revised header data (Added models)
Revised Warranty (Added time for installing fuel kit and for a Road Test.
Removed time for checking low pressure and fuel delivery rate)
Revised Service Solution (Updated procedure)

4

08/18/2016

Revised Warranty (Updated time for checking low fuel pressure and fuel
delivery rate)

3

08/02/2016

Revised Warranty (Added time for checking fuel pressure and delivery
rate)

 MIL on.
 Customer has problems starting the car.
 The issue usually occurs when the temperature outside is around 105°F or higher, after start-stop journeys
with longer idle speed phases and a hot engine.

Technical Background
Vapors in fuel system.

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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.

Production Solution
Not applicable.

Service
If DTC P310B (Low fuel pressure control, fuel pressure outside tolerance) stored in the engine control
module (ECM), J623 (address word 0001) with one of the following symptom codes:
 Symptom code 6183 for 3.0 TFSI.
 Symptom code 2636 and/or 2637 for 2.0 TFSI.
Intake air temperature is usually above 140°F (60°C) in the freeze frame data of the diagnostic log.
Proceed as follows:
1. Remove the fuel delivery unit according to the Repair Manual, Workshop Manual >> Engine >> Fuel
Supply Gasoline Engines >> 20 Fuel Supply >> Fuel Delivery Unit >> Fuel Delivery Unit Removing
and Installing.

Warning:
Danger due to escaping fuel. To prevent large quantities of fuel from leaking from the fuel delivery unit
when removing, the fuel tank may only be a maximum of ¼ full

2.

Install the kit in the fuel delivery module.

The repair kit for fuel delivery module has the
following parts:
 Control Valve “A.” (Figure 1)
 Control Valve “B” (Figure 2)
 Hose (Figure 3)

Figure 1. Control Valve “A.”

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© 2017 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.

Figure 2. Control Valve “B.”

Figure 3. Hose.
Note:
There are 3 different designs for Control Valve Type B.
 Type B1: Part has to be modified at the dealership (cut the red area described in the picture). Make
sure there is no plastic debris inside or outside the valve.
 Type B2: no modification has to be performed, ready for installation.
 Type B3: no modification has to be performed, ready for installation.

Page 3 of 11
© 2017 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.

Type: B1
Cut the area marked in red.

Figure 11. Cut the area marked in red.
Type: B2
No modifications are necessary.

Figure 12. Do not modify.

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© 2017 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.

Type: B3
No modifications are necessary.

Figure 13. Do not modify.

Follow the next steps to install the kit in the fuel delivery module:
2.1 With the fuel delivery unit outside the vehicle,
disconnect the main supply line (Figure 4).

Figure 4. Disconnect the main supply line.
2.2 Install the hose supplied in the kit according to the
picture below:

Figure 5. Install the hose.

Page 5 of 11
© 2017 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.

2.3 Install Control Valve “B” in the marked area. Push it
until a ‘click’ noise is heard (Figure 6).

Figure 6. Install Control Valve “B”.
2.4 Control Valve “B” installation position (Figure 7).

Figure 7. Correct position for Control Valve
“B”.
2.5 Install Control Valve “A” as shown in the picture
(Figure 8).

Figure 8. Install Control Valve “A”.

Page 6 of 11
© 2017 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.

2.6 Connect the remaining line to the Control Valve “B”
(Figure 9).

Figure 9. Connect remaining line.
2.7 Final installation position for Control Valve “B” (Figure
10).

Figure 10. Final position for Control Valve
“B.’
3.

Install the fuel delivery module in the vehicle according to Elsa at Repair Manual, Workshop Manual
>> Engine >> Fuel Supply Gasoline Engines >> 20 Fuel Supply >> Fuel Delivery Unit >> Fuel
Delivery Unit Removing and Installing.

4.

Start the vehicle.

5.

Check for leaks.

6.

Clear all DTC`s.

7.

Test drive the vehicle.

As a reference, find below videos with installation procedure for each type of vehicle.

Page 7 of 11
© 2017 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.

Before attempting the repair for the A6 and A7, please
review the video of the repair procedure: https://audiexternal.kzoplatform.com:443/swf/player/340 (Figure 13).

Figure 13. QR code for supporting video.
Before attempting the repair for the Q5, please review the
video of the repair procedure: https://audiexternal.kzoplatform.com:443/swf/player/338 (Figure 14).

Figure 14. QR code for supporting video.

Page 8 of 11
© 2017 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.

Before attempting the repair for the A4 and A5, please
review the video of the repair procedure: https://audiexternal.kzoplatform.com:443/swf/player/339 (Figure 15).

Figure 15. QR code for supporting video.
Note:
The procedure described above can be performed only with the DTC and symptom codes described
previously.
If DTC P310B is present with a different symptom code, proceed with normal diagnosis.

Warranty
Claim Type:

 110 up to 48/50
 G10 for CPO covered vehicles – verify owner
 If vehicle is outside any warranty, this Technical Service Bulletin is informational
only.

Service Number:

2066

Damage Code:

0040

Labor Operations:

For A4, A5, A5 cab,Q5:
Electric fuel pump remove
+ reinstall

2066 1900

130 TU

2066 1950

20 TU

For A6 and A7:
Electric fuel pump remove
+ reinstall

Page 9 of 11
© 2017 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.

Fuel drain + fill

2003 1700

110 TU

Install repair kit for fuel
delivery module

2066 9999

30 TU

GFF

0150 0000

Time stated on diagnostic
protocol

For all models:

Diagnostic Time:

(Max 30 TU)
Road test before service
procedure

No allowance

0 TU

Road test after service
procedure

0121 0004

10 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 #2043758/5

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
Part Number

Part Description

Quantity

See ETKA

Seal

01

See ETKA

CAP ( if necessary only )

01

8K0298112G

Repair kit for fuel delivery module

01

Additional Information
All parts and service references provided in this TSB (2043758) are subject to change and/or removal. Always
check with your Parts Department and service manuals for the latest information.
©2017 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

Page 10 of 11
© 2017 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.

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 11 of 11
© 2017 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.