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Technical Service Bulletin
93 PPE/PPC - high-voltage electrical system fault POAOCOO in 008C

Transaction No.: 2079833/3
Release date: Dec 19, 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
3 - Revised Service (Updated verbiage)
Revised Warranty (Updated Labor Operations)
2 12/04/2025 | 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):

Technical Background

Not applicable.

Production Solution

Not applicable.

Service

POA0CO00 (symptom ID: 14746385): Pilot line for high-voltage system short circuit to earth.

Please perform the software update described in TSB 2079690, 00 Combined software update 03.10.00/C

(28.13.01) KD2.

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 required |0151 0040 130 TU
preliminary and follow-up work (including bus sleep
cycle, calibration drives, and additional work)
In the case of additional attempts after flash abort 0150 9999 50 TU
occurred, an additional lump sum of 50 time units can p h
be claimed per flash cancellation ef eac
documented
attempt

Claim Comment:

As per TSB 2079833/3

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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