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Technical Service Bulletin

Topic 93 Q4 e-tron: vehicle/HV battery does not charge, drive system unavailable O0C6; DTC P1A0800,

PI P1A0FO00, PA1600
United States 444 Volkswagen of America, Inc. (6444)
jo.

[Status | Released for publishing

Release date |Feb 5, 2025

Diagnostic trouble codes

Diagnostic address Diagnostic trouble code Fault symptom |Storage state

00C6 - High-voltage battery charger |P1A0800: Charging unit 1 Fuse faulty | static |

00C6 - High-voltage battery charger |P1A0F00: Charging unit 2 Fuse faulty | Intermittent

00C6 - High-voltage battery charger |P1A0F00: Charging unit 2 Fuse faulty | static

O0C6 - High-voltage battery charger |P1A1600: Charging unit 3 Fuse faulty | Intermittent

00C6 - High-voltage battery charger |P1A1600: Charging unit 3 Fuse faulty | static

00C6 - High-voltage battery charger |P1A0800: Charging unit 1 Fuse faulty | Intermittent

New customer code

Object of complaint Complaint type [Position]

. . . . . . oe control modules, services -> with

vehicle service -> vehicle diagnosis -> Guided Fault Finding (GFF) fault stored in the DTC memory | |
engine -> engine operation -> electro-drive mode functionality -> no function [|
engine -> engine operation -> switch on electro-drive motor functionality -> no function [|
power, vehicle electrical system, data transfer -> battery management functionality -> no function

-> charging high-voltage battery

power, vehicle electrical system, data transfer -> battery management

-> charging high-voltage battery -> high-voltage battery charging at functionality -> faulty

home charging station

power, vehicle electrical system, data transfer -> battery management | functionality -> operation

-> charging high-voltage battery sequence incorrect

power, vehicle electrical system, data transfer -> battery management | functionality -> cannot be

-> charging high-voltage battery switched on/activated

Vehicle data

Q4 e-tron

Sales types

aoa |
aoa |
PR numbers

?:with KB

Documents

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Technical Service Bulletin Transaction No.: 2073560/3
93 Q4 e-tron: vehicle/HV battery does not charge, drive system unavailable 00C6; DTC .
P1A0800, P1A0F00, PA1600 Release date: Feb §, 202
Condition

REVISION HISTORY
revision [pate [rumors
5b |. | Revised Technical background (Add additional SW information)

2 12/16/2024 Revised Technical background (Add description of cause)

Revised Service (Updated service steps.)
Revised Condition (Updated Customer concern and workshop findings)

04/03/2024 Initial publication
Customer states:

+ The vehicle/high-voltage battery cannot be charged via AC.

+ The drive system cannot be activated.

+ The vehicle cannot be unlocked with the key fob.

+ The high voltage charging flap cannot be opened.

+ The charging connector cannot be unplugged.
Workshop findings:

+ The customer statement can be reproduced.

+ The 12v battery is discharged.

In the control unit for high-voltage battery charging unit (diagnostic address 00C6), either one of the following DTC
entries (intermittent/static) is stored for the AC fuse:

+ P1A0800: Charging unit 1 fuse blown Symptom: 397395.

+ P1A0F00: Charging unit 2 fuse blown Symptom: 397396.

+ P1A1600: Charging unit 3 fuse blown Symptom: 397397.
Technical Background

Hardware issue in control unit for the high voltage battery charging unit (diagnostic address 00C6).

Only the control unit for the high voltage battery charging unit (diagnostic address 00C6) with software

part number: 1EA.915.692.M and software: 2007/2207 is affected by this complaint.

Production Solution

Not applicable.

Service
1. AC fuse: Perform charge test, delete event memory entry, and reassess complaint, and if necessary
replace charging unit for high-voltage battery - J1050 -.
AC fuse:
Carry out an AC charge test, delete the DTC entry/entries and reevaluate the complaint:
+ If the charge test is successful and the DTC entry/entries can be deleted:
a. The measures are completed, and the vehicle can be returned to the customer.
+ Ifthe charge test is not successful and/or the event memory entry/entries cannot be deleted, then the high-
voltage battery charging unit - J1050 - must be replaced as per the ELSA Workshop Manual.
Warranty
Claim Type: + Ifthe vehicle is outside of any warranty, this Technical Service Bulletin is
informational only.
Damage Code: 0040
Labor Operations: Replace high-voltage battery charging unit — 9352 5550 See SRT with
J1050 (if necessary) associated operations
GFF 0150 0010 See SRT with
associated operations
GFF 0150 0060 Time stated on the
diagnostic protocol
Charge Battery 2706 8950 See SRT with
associated operations
Claim Comment: As per TSB 2073560/3
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.
Required Parts and Tools
Always check with your Parts Department and/or ETKA for the latest information and parts bulletins.
Part Number | Part Description Quantity
See ETKA Fasteners, Bolts, Nuts, and Screws as needed per the Repair Manual | See ETKA/ELSA
See ETKA High-voltage battery charging unit — J1050 (if required)
Additional Information
All parts and service references provided in this TSB (2073560) are subject to change and/or removal.
©2025 Audi of America, Inc. All rights reserved. The information contained in this document is based on the latest
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