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Technical Service Bulletin Transaction No.: 2079833/2
93 PPE/PPC - high-voltage electrical system fault POAOCOO0 in 008C Release date: Dec 4, 2025
Condition

Model(s) Year(s) VIN Range Vehicle Specific Equipment

A6 Sportback e-tron, S6
Sportback e-tron, Q6 e-tron,

Q6 Sportback e-tron, SQ6 e- 2025 All Not applicable

tron, and SQ6 Sportback e-tron

REVISION HISTORY

Revision | Date Purpose

2 - Revised Condition (Added model table)

Revised Warranty (Added warranty table)

1 11/04/2025 | Initial publication
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):

- POAO0COD (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.

Warranty

Claim Type: * — If the vehicle is outside of any warranty, this Technical Service Bulletin is
informational only.

Service Number: 9325

Damage Code: KDO2

Labor Operations: Software update, including connecting battery 0151 0010 See SRT with
charger associated operations
Fixed rate for software update, including all 0151 0040 130 TU

required preliminary and follow-up work
(including bus sleep cycle, calibration drive,
additional work and restarting the software
update if flashing is aborted)

Claim Comment: As per TSB 2079833/2

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.

When performing the combined software update, time stamps are not required for billing under warranty. You are
therefore permitted to work on other vehicles at the same time. The combined software update can also be
performed by non-productive personnel.

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.

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