A26162720439811

Technical Service Bulletin
Audi
26 DTC P042000 (Catalytic converter efficiency below threshold) stored in ECM - Repair Authorization
26 16 27 2043981/1 April 14, 2016.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
A4
2009 - 2010
All
2.0L CAEB engine
A5, A5 Cabriolet,
Q5
2010 - 2011
All
2.0L CAEB engine
Condition
DTC P042000 (Catalytic converter efficiency below threshold) is stored in the engine control module (ECM), J623
(address word 01).
Technical Background
Various parts have been replaced under warranty for the condition noted above, but no issues were identified with
these parts. In an effort to gain information on the OTC code, we are asking that you contact the Audi Technical
Assistance Center (TAC) before replacing any parts. This will assist us in diagnosing any potential issues with the
condition noted above.
Production Solution
Vehicle is out of production.
Service
Audi of America is requesting your cooperation in supplying us with technical information regarding this condition.
1. Verify the condition.
2. Check the repair history of the vehicle to ensure that no major repairs, or replacement of part(s) on the
engine and/or emission control systems, have been performed on the vehicle in the past.
3. If the vehicle is within the New Vehicle Limited Warranty, contact a TAC consultant before proceeding. Attach
the OTC and diagnostic log to the TAC ticket.
Warranty
This TSB is informational only and not applicable to any Audi warranty.
Page 1 of2
© 2016 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 arc 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
Audi
Additional Information
All parts and service references provided in this TSB (2043981) are subject to change and/or removal. Always
check with your Parts Department and service manuals for the latest information.
Page 2 of2
© 2016 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 arc 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.