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Technical Service Bulletin Transaction No.: 2077962/6
93 A6/Q6 e-tron: charging cable is shown as being connected; U01E400 Release date: Apr 9, 2026
Condition
O0AS5 — Front sensor for driver
AG Sportback e-tron, $6 assistance systems:
Sportback e-tron, Q6 e-tron, Q6 2025 All Software:
Sportback e-tron, SQ6 e-tron,
and SQ6 Sportback e-tron 0250
0295
REVISION HISTORY
revision [pate [purpose
6» | | Revised Condition (Added Fault code)
02/12/2026 | Revised Warranty (Added claiming instructions)
01/22/2026 | Revised Service (Updated instructions)
Revised Warranty (Added claiming instructions)
Customer states:
Message in instrument cluster: “Charging connector still attached. Vehicle cannot be driven” although connector is
not plugged in.
Workshop findings:
The following DTC is logged in Data Bus On Board Diagnostic Interface -J533-, (address word 0019):
+ U01E400: “Control unit for charging communication, no communication" is stored as active/static
OR
+ _U01E500: “Lost Communication with Smart Charging Interface device” is stored as active/static
One of the two following diagnostic addresses cannot be accessed:
* 813C (control unit for charging communication 1) or
OR
+ 813D (control unit 2 for charging communication 1),
+ ie. they are not in the diagnostic log.

Technical Background
Hardware issue in control unit for activation of charging flap and charging socket.
Production Solution
Not applicable.
Service
Try to reproduce the customer complaint (based on the description/cause of the issue), so that it can be
clearly assigned to this TSB. The following repair must only be carried out if all the criteria (model/type,
chassis number, engine/motor and gearbox code, PR number(s), part number, software version, code etc.)
apply exactly. Otherwise, this solution will not eliminate the problem and repeat repairs may be necessary.
In such a case, we may reject the warranty claim and charge back the cost of the parts.
Proceed as follows to restore the drive system of the vehicle:
1. Switch off the ignition
2. Remove fuse F39 (activation of charging flap and charging socket no.1) or F43 (activation of charging flap and
charging socket no.2) for at least 10 seconds. The fuse is in the luggage compartment (see Figures 1 and 2).
3. _Reinsert the fuse in its position.
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Figure 1: Fuse carrier installation location: luggage compartment on left, open cover.
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Figure 2: Fuse carrier.
Please proceed as follows to resolve the complaint:
Check the DTC memory again after removing and re-installing the fuse:
1. If the control unit 813C or 813D can now be accessed check whether TSB 2079690, 00 Combined software
update 03.10.00/C (28.13.01) KD2 is visible for this vehicle. If this TSB is visible, you must perform it before
ordering the replacement part.

2. Replace the control unit with which there was an issue at the start (i.e. could not be accessed).
If control unit 813C or 813D still cannot be accessed, replace it directly.
Warranty
Claim Type: + If the vehicle is outside of any warranty, this Technical Service Bulletin is
informational only.
Damage Code: 0040
Labor Operations: If necessary, restore the vehicle’s drive system (remove fuse):
Remove and install 7003 1910 See SRT with
luggage compartment associated
side trim (rear) operations
Repair HV charge 9351 4199 5TU
manager (remove
fuse)
Replace control unit for activation of charging flap and charging socket:
Replace high-voltage | 9351 5599 40 TU
charge manager
GFF 0150 0060 Labor
according to
the diagnostic
log
Charge battery 2706 8950 See SRT with
associated
operations
If the combined update is performed
Software update, 0151 0010 See SRT with
including connecting associated
battery charger operations
Fixed rate for software | 0151 0040 130 TU
update, including all
required preliminary
and follow-up working
(including bus sleep
cycle, calibration
drive, additional work
and restarting
software update if
flashing is aborted)
In the case of 0150 9999 50 TU
additional attempts

after flash abort Per each
occurred, an documented
additional lump sum of attempt
50 time units can be
claimed per flash
cancellation
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.
Please note the information on predecessors and items that are included and excluded in the repair operations.
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.
Required Parts and Tools
Control unit for activation of charging flap and charging socket: Part number 95C907594*, depending on PR
number.
Additional Information
All part and service references provided in this TSB (2077962) 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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