A011651 2040924-
Service Bulletin Details
Public Details for: A011651 2040924-
Mil is on due to dtc P0456 (evap emission contr. Sys. (very small leak) leak detected) being stored in the engine control module (ecm), j623 (address word 01). Drivability is not affected.
Models from 2015
2015 AUDI Q7 |
Models from 2014
2014 AUDI Q7 |
Technical Service Bulletin 01 MIL on (DTC P0456 (EVAP emission control system small leak detected)) 01 16 51 2040924/1 January 13, 2016. Model(s) Year VIN Range Vehicle-Specific Equipment Q7 2014 - 2015 All 3.0 TFSI Condition • MIL on. • DTC P0456 (EVAP Emission Contr. Sys. (very small leak) Leak Detected) is stored in the engine control module (ECM), J623 (address word 01). • Drivability is not affected. Technical Background The leak detection pump (LDP) is a vacuum-driven, ECM-controlled, diaphragm pump. In order for the LDP to operate, the engine must be running and vacuum must be applied to the vacuum switch on the LDP. The LDP pressurizes the EVAP system and monitors any pressure drop within a specified amount of time in order to detect a leak. DTC P0456 can be stored due to either of the following conditions: • Static or sporadic air leaks in the EVAP system. • Static or sporadic air leaks in the LDP. Production Solution Not applicable. © 2016 Audi of America, Inc. Page 1 of 3 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 Service 1. Visually inspect the EVAP system for any loose connections or damaged parts. If found, repair the loose connections and/or replace the damaged parts. 2. Connect KLI9210 and tune knob to “Hold”. Before proceeding, have a stopwatch ready. 3. Perform basic settings 70/71 test. Monitor the pressure increase and record the max value. (The max pressure should be between 9-11 inch/water.) 4. As soon as the pressure stops increasing, start the stopwatch and turn the ignition off. 5. If the pressure drops within 6 minutes by 4 inch/water during test (for example, max pressure 10.5 inch/water drops to 6.5 inch/water or less after 6 minutes): 1. Have tool 3094 ready to be installed and perform basic settings 70/71 test again. 2. As soon as max pressure is reached, install tool 3094 between the filter and LDP to prevent any air flow: • If the pressure now holds, replace LDP. • If the pressure drops at the same rate, find the leak using a smoke tester and/or through the application of soapy water on all lines and connections (Note that a small leak is more likely to be found with soapy water and a larger leak with the smoke tester). Repair as needed. If the pressure holds during test: • If this is the first time DTC P0456 has appeared for this vehicle, clear the DTC and release the vehicle. • If the vehicle has been in with DTC P0456 before, contact TAC for instructions. © 2016 Audi of America, Inc. Page 2 of 3 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: 2048 Damage Code: 0040 Labor Operations: EVAP system pressure test 2048 0199 70 TU Leak detection pump remove+reinstall (If necessary) 2048 1950 20 TU Rear wheel housing liner remove+reinstall (If necessary) 6676 1900 40 TU GFF – Checking and clearing fault codes included in existing labor operations 0150 0000 Time stated on diagnostic protocol Diagnostic Time: (Max 100 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 #2040924/1 Required Parts and Tools Part Number Part Description Quantity 7L8906271A Leak detection pump* 1 (If necessary) *Always check with your Parts Department and service manuals for the latest information. Tool Number Tool Description 3094 Hose clamps Additional Information All parts and service references provided in this TSB (2040924) are subject to change and/or removal. Always check with your Parts Department and service manuals for the latest information. © 2016 Audi of America, Inc. Page 3 of 3 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.