00 Possible drivability issues due to the use of winter-blend fuel in a warmer season
00 20 37 2059437/1 May 5, 2020.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

All

2010 - 2020

All

Gasoline Engines

Condition
Customer states:
 MIL on.
 Drivability issues.
 Fuel smell.
 Difficulty refueling.

Technical Background
As a result of actions due to the coronavirus (Covid -19) and the subsequent reduced economic activity, market
fuel consumption has been significantly reduced. The fuel distribution system is dependent on high throughput to
transition from higher vapor pressure winter fuels to lower vapor pressure fuels for the summertime EPA
regulated ozone season.
In response, EPA has enacted waivers of seasonal fuel requirements. For more details, please reference the EPA
website: https://www.epa.gov/enforcement/nationwide-fuel-waiver-concerning-summer-gasoline.
This could result in more volatile/higher vapor pressure fuel in the fuel supply chain longer than normally
permitted by the EPA or the States. Customer issues related to higher volatile fuel combined with warmer ambient
temperatures are possible, and standard diagnostic procedures may not lead to a root cause.
Potential issues could include vehicle refueling concerns, drivability issues, Diagnostic Trouble Codes (DTCs)
activating the MIL, increased evaporative emissions, and fuel odor. Issues are most likely to occur in warm
temperatures within days after refueling.

Production Solution
Not applicable.

Page 1 of 2
© 2020 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.

Service
To prevent unnecessary diagnostic time and/or repairs, question the customer if the concern started shortly after
re-fueling the vehicle. The cause may be due to the situation described above and re-fueling with summer blend
fuel is required to solve the customer concern.

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

Additional Information
All part and service references provided in this TSB (2059437) are subject to change and/or removal. Always
check with your Parts Department and/or ETKA for the latest information and parts bulletins. Please check the
Repair Manual for fasteners, bolts, nuts, and screws that require replacement during the repair.
©2020 Audi of America, Inc. All rights reserved. The 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.

Page 2 of 2
© 2020 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.