93 Vehicle does not start, DTC P0AA200 or P0AA500 is stored in the hybrid battery management control
module
93 21 53 2063251/2 July 12, 2021. Supersedes Technical Service Bulletin Group 93 number 21-49 dated May 17,
2021 for reasons listed below.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

A7 TFSIe,
Q5 TFSI

2020 - 2022

All

e-tron

Condition
REVISION HISTORY
Revision

Date

Purpose

2

-

Revised Warranty (Updated Labor Operation)

1

05/17/2021

Initial publication

Customer states:
 The vehicle does not start.
Workshop findings:
The following DTC(s) may be stored in the hybrid battery management control module, J840 (address word
008C):
 DTC P0AA200 (Hybrid/EV Battery Positive Contactor Circuit Stuck Open) with symptom code 20481.
And/or
 DTC P0AA500 (Hybrid/EV Battery Negative Contact Circuit Stuck Open) with symptom code 20483.

Technical Background
The contact surfaces of the HV contactors built into the battery junction box (BJB) can in rare cases oxidize if they
are not used for a very long time or if the air humidity is extremely high.
This oxidation concern can be rectified by the procedure mentioned in this TSB.

Production Solution
Not applicable.

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© 2021 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
If the following DTC(s) are stored in the hybrid battery management control module, J840 (address word 008C):
 DTC P0AA200 (Hybrid/EV Battery Positive Contactor Circuit Stuck Open) with symptom code 20481 (Figure
1).
And/or
 DTC P0AA500 (Hybrid/EV Battery Negative Contact Circuit Stuck Open) with symptom code 20483 (Figure
2).

Figure 1. DTC P0AA200 with symptom code 20481.

Figure 2. DTC P0AA200 with symptom code 20483.

For the DTCs specified above, GFF suggests replacing the switching unit for the high-voltage battery (Battery
Junction Box, SX6).
Do not proceed according to GFF; instead, perform the following steps in the specified sequence:

Page 2 of 5
© 2021 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.

1.

Read out all measured value blocks relating to energy management from the gateway via GFF and make
them available in GFF paperless.

2.

Switch the ignition off and on again 5 to 10 times in a row (waiting for 5 seconds each time).

3.

Erase all DTCs.

4.

Perform a road test (EV mode with as many electrical consumers as possible switched on).

5.

Then re-assess whether the issue still occurs.

If the issue does not occur again:
 Return vehicle to the customer. This condition is very rare and we do not expect the concern to repeat itself.
If the issue occurs again:
1.

Proceed according to the scan tool and replace the High-Voltage Battery Control Module SX6 (BJB). Follow
all instructions in the scan tool and the Elsa repair manual.

2.

Read out all measured value blocks relating to energy management from the gateway via GFF and make
them available online (option 2 in GFF).

3.

Switch the ignition off and on again 5 to a maximum of 10 times in a row (waiting for 5 seconds each time).

4.

Erase all DTCs.

5.

Perform a road test (EV mode with as many electrical consumers as possible switched on).

6.

Then re-assess whether the issue still occurs.

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:

9327

Damage Code:

0010

Labor Operations:

TSB Test Procedure, performed once (Issue
resolved 1st attempt)

9327 0199

10 TU

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© 2021 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.

Diagnostic Time:

Claim Comment:

TSB Test Procedure, performed twice (Issue
not resolved 1st attempt repair required)

9327 0299

10 TU

HV battery control module remove + reinstall
(only to be claimed if the TSB Test
Procedure did not repair the concern on the
1st attempt)

9327 1950

See SRT with
associated
operations

GFF

0150 0000

Time stated on
the diagnostic
protocol (Max 100
TU)

Road test prior to service procedure

No allowance

0 TU

Road test after service procedure

0121 0004

10 TU

As per TSB #2063251/2

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.
Parts are only to be replaced if the TSB Test Procedure did not repair the concern on the 1st attempt.
Part Number

Part Description

Quantity

See ETKA

Fasteners, Bolts, Nuts and Screws as needed per the
Repair Manual

See ETKA/ELSA

High-voltage battery switch box BJB

01

High-voltage battery switch box BJB

01

Q5
80A915235*
(Order by VIN)
A7
4K0915254*
(Order by VIN)

Page 4 of 5
© 2021 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.

Additional Information
All part and service references provided in this TSB (206325) 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.
©2021 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 5 of 5
© 2021 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.