A1923412062951_3

Technical Service Bulletin
19 Red coolant warning lamp on, DTCs P218100, P017B00, P017C00, and/or P017E00 are stored in the
ECM
19 23 41 2062951/3 September 7, 2023. Supersedes Technical Service Bulletin Group 19 number 22-32 dated
October 21, 2022, for reasons listed below.
Model(s)
A8, and S8
Year
VIN Range
2019 – 2020
All
2021
000001 – 007769
2020
All
2021
000001 – 015609
2020
All
2021
000001 – 010457
2020
All
2021
000001 – 011352
2021
900001 - 901935
SQ7
SQ8
RS Q8
RS 6 Avant, and
RS 7
Vehicle-Specific Equipment
Not Applicable
Condition
REVISION HISTORY
Revision
Date
Purpose
3
-
Revised Condition (Updated workshop findings)
2
10/21/2022
Revised Warranty (Updated Labor Ops)
1
05/03/2021
Initial publication
Customer states:
• Red coolant warning lamp is illuminated in the instrument cluster.
Workshop findings:
One or more of the following DTCs must be stored in the engine control module (ECM), J623 (address word
0001):
• DTC P218100 (Malfunction in cooling system).
• DTC P017B00 (Cylinder head temperature sensor implausible signal).
• DTC P017C00 (Cylinder head temperature sensor short circuit to ground).
© 2023 Audi of America, Inc.
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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.
Technical Service Bulletin
• DTC P017E00 (Cylinder head temperature sensor open circuit/loose contact).
Note: If DTCs P1BB400 or P218100 are also stored in the ECM, please also review TSB 2069248 to
determine the appropriate action.
Technical Background
Damage to the O-ring of the temperature sensor can cause water intrusion inside the plastic housing of the
coolant temperature sender G407 (cylinder head temperature sensor). The moisture can damage the sensor
element. The loss of function can be sporadic.
Production Solution
Improved part in production.
Service
1. Work through Guided Fault Finding.
2. It is very important to also check whether the o-ring
located directly on the tip of the coolant temperature
sender G407 is visibly damaged and/or pinched (Figure
1).
Figure 1. O-ring is pinched.
© 2023 Audi of America, Inc.
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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.
Technical Service Bulletin
3. Replace the G407 if the o-ring is damaged and/or pinched.
Warranty
Claim Type:
• 110 up to 48 Months/50,000 Miles.
• G10 for CPO Covered Vehicles – Verify Owner.
• If the vehicle is outside any warranty, this Technical Service Bulletin is informational
only.
Service Number:
1978
Damage Code:
0040
Labor Operations:
Remove and install temperature sender
1978 19XX
See SRT with
associated
operations
Diagnostic Time:
GFF
0150 0000
Time stated on
the diagnostic
protocol (Max 20
TU)
Road test prior to the service procedure
No Allowance
0 TU
Road test after the service procedure
No Allowance
0 TU
As per TSB 2062951/3
Claim Comment:
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
Always check with your Parts Department and/or ETKA for the latest information and parts bulletins.
Part Number
Part Description
Quantity
See ETKA
Fasteners, Bolts, Nuts, and Screws as needed per the
Repair Manual
See ETKA/ELSA
See ETKA
Coolant temperature sender G407
01
Tool Number
© 2023 Audi of America, Inc.
Tool Description
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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.
Technical Service Bulletin
VAS 6160/VAS 6150
VAS tester with the current version of ODIS (Windows 10)
Additional Information
All parts and service references provided in this TSB (2062951) are subject to change and/or removal.
©2023 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.
© 2023 Audi of America, Inc.
Page 4 of 4
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.