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Technical Service Bulletin

Topic 93 PPE/PPC - high-voltage electrical system fault POAOCOO in 008C
Market area United States 444 Volkswagen of America, Inc. (6444)

Brand Audi

Transaction No. |2079833/1

Level EH

Status Released for publishing

Release date

Oct 30, 2025

Diagnostic trouble codes

Diagnostic address Diagnostic trouble code Fault Storage
symptom state

008C - Hybrid battery POAOCOO0: High Voltage System Interlock Circuit static

management Low

008C - Hybrid battery POAOCO0: High Voltage System Interlock Circuit :

management Low Intermittent

New customer code

Object of complaint Complaint type Position

engine -> engine operation -> electro-drive mode

functionality -> no
function

information, navigation, communication, entertainment -> malfunction display
symbols -> vehicle electrical system malfunction indicator

functionality ->
activates

Vehicle data

Q6

Sales types

Type |MY

Brand

Designation

Engine code

Gearbox code

Final drive code

GF*

2025/A

*

*

*

GF*

2026/A

*

*

*

A6 e-tron

Sales types

Type |MY

Brand

Designation

Engine code

Gearbox code

Final drive code

GH"

2025/A

*

*

*

GH"

2026|A

*

*

*

Documents

Document name

master.xml

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Technical Service Bulletin Transaction No.: 2079833/1
93 PPE/PPC - high-voltage electrical system fault POAOCOO0 in 008C Release date: Oct 30, 2025
Condition

Customer states:

* The red electrical system warning is shown in the instrument cluster with the message “Electrical system: fault.
Safely stop vehicle’.

* The drive system cannot be activated.

Workshop findings:

* — The following event memory entry is logged in the hybrid battery management control unit (diagnostic address
008C):

- POA0NCOO (symptom ID: 14746385): Pilot line for high-voltage system short circuit to earth.

Technical Background

Not applicable.

Production Solution
Not applicable.

Service

Please check whether TSB 2079690, 00 Combined software update 03.10.00/C (28.13.01) KD2 is visible for this
vehicle. If this is the case, please perform the software update described in TSB 2079690.

The software update described in TSB 2079690 will be released in stages for the individual vehicle models,
depending on availability.

Warranty

Please use the accounting instructions and labor times specified in TSB 2079690.

Please use the following service number / damage code for billing via this TSB: 9325 / KDO2.

Additional Information

All part and service references provided in this TSB (2079833) 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.

©2025 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
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