Technical Service Bulletin
87 Air conditioning does not cool - P053000, P251500 stored in C5
87 24 75 2068460/6 May 10, 2024. Supersedes Technical Service Bulletin Group 87 number 23-55 dated
October 2, 2023 for reasons listed below.
Model(s)

Year

A8 e quattro

2020 - 2021

A6, A6 allroad,
S6, A7, S7, A8,
S8, e-tron
Sportback
2021 - 2022
quattro, Q5, Q5 e
quattro, SQ5,
Q7, SQ7, Q8,
SQ8, and RS Q8
e-tron S, e-tron
GT, and RS etron GT

VIN Range

Vehicle-Specific Equipment

All

Not Applicable

2022

Condition
REVISION HISTORY
Revision

Date

Purpose

6

-

Revised Service (Add statement regarding sensor interchangeability)
Revised Warranty (Corrected SRTs)

5

10/02/2023

Revised Technical Background (Corrected component designation)
Revised Service (Corrected component designation)
Revised Warranty (Corrected SRTs)

4

08/10/2023

Revised Service (Changed statement concerning sensor marking)

Customer states:
The air conditioning system does not cool the cabin. This condition may be intermittent in nature.
Workshop findings:
The symptom is confirmed. One or both of the following DTCs are stored in Thermal management, J1024
(address word 00C5):
• DTC P053000 – Air conditioning system pressure sensor electrical fault.
• DTC P251500 – Refrigerant pressure sensor 2 electrical fault.

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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
Technical Background
A failure of the sensor electronics causes a loss of pressure evaluation. The sensor with base part number
4M0959603 and a build date before the date Calendar Week 31, 2021 is at issue (G395 / G826).

Production Solution
An improved sensor has been implemented in production.

Service
1. Should the vehicle present with the symptom profile described in this TSB, inspect and/or replace all of the
pressure sensors in the refrigerant circuit that are of the base part number 4M0959603 and have a build date
before Calendar Week 31, 2021. Each model for which this TSB appears will have between 1 and three of this
type of sensor installed ad various positions in the refrigerant circuit, either on the low- or high-pressure sides
of the circuit.
2. Inspect the markings on the sensor to determine if the sensor has been previously replaced with an improved
sensor produced after Calendar Week 31, 2021. Figure 1 shows the locations of the markings and their
interpretation. In this example, while the sensor is an ‘E’ index sensor, there is a green dot on the connector
housing and a laser marking on the aluminum housing the build date of the sensor is before Calendar Week
31, 2021, and would require replacement.

Figure 1. Pressure and temperature sensor markings and build date
3. A sensor with index ‘E’ produced after Calendar Week 31, 2021, has a laser marking on the aluminum housing
and may or may not contain a green dot on the connector housing is of the improved type and need not be
replaced.
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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
The presence of the green dot on the sensor is not the sole, conclusive evidence of the sensor being of
the improved type. The green dot was applied in production as an immediate identification of an
improved sensor, but the green dot was not applied indefinitely. Always check the sensor date as this
is the confirmation of the sensor status.

Pressure sensors with different part number indexes are not interchangeable. When replacing the
pressure sensors, all of the sensors being replaced must be of the same part number index (e.g., all
sensors must be ‘E’ index, or all sensors must be ‘J’ index). LIN communication conflict will result if
differing part indexes are used.

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:

8757

Damage Code:

0040

Labor Operations:

A6 / A7:
Check pressure switch

8709 0199

5 TU

Pressure switches (both) remove and
reinstall

8709 2050

See SRT with
associated operations

Check pressure switch

8709 0199

5 TU

Pressure switches (both) remove and
reinstall

8757 2093

See SRT with
associated operations

Check pressure switch

8709 0199

5 TU

Pressure switch (G395) remove and
reinstall

8757 1950

See SRT with
associated operations

Q7 / Q8:

A8:

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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
Pressure switch (G826) remove and
reinstall

8764 1950

See SRT with
associated operations

Check pressure switch

8709 0199

5 TU

Pressure switches (all 3) remove and
reinstall

8709 2050

See SRT with
associated operations

Check pressure switch

8709 0199

5 TU

Pressure switches (both) remove and
reinstall

8709 2050

See SRT with
associated operations

Check pressure switch

8709 0199

5 TU

Pressure switch (G395) remove and
reinstall

8757 1950

See SRT with
associated operations

Pressure switch (G826) remove and
reinstall

8764 1950

See SRT with
associated operations

e-tron GT:

Q5:

e-tron:

-or-

Diagnostic Time:

Claim Comment:

Pressure switches (both) remove and
reinstall

8709 2051

See SRT with
associated operations

GFF

0150 0060

Time stated on the
diagnostic protocol
(Max 50 TU)

Battery charge

2706 8950

See SRT with
associated operations

Road test prior to the service procedure

No allowance

0 TU

Road test after the service procedure

No allowance

0 TU

As per TSB 2068460/6

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
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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
Always check with your Parts Department and/or ETKA for the latest information and parts bulletins.
Part Number

Part Description

Quantity

4M0959603E

1-3

Pressure and temperature sensor

Additional Information
All parts and service references provided in this TSB (2068460) are subject to change and/or removal.
©2024 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.

© 2024 Audi of America, Inc.
Internal

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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.