No. 61-22 Service Bulletin/Repair Instructions

Service
Technical Information
61/22
ENU
2797
Charging Process is Cancelled / Check Engine Warning Light is Active: Re-Program High-Voltage

Charger (OBC) Control Unit (61/22)
2
Change overview

Version
Date
Change
0
05/12/2022
•
First publication
1
01/20/2026
•
Target software and Porsche Tester software release adapted
Vehicle Type:
Panamera 4 E-Hybrid (971)/Panamera 4S E-Hybrid (971)/Panamera Turbo S E-Hybrid (971)
Model Year:
As of 2021 up to 2023
Equipment:
Charger, 3.6 kW (M no. KB1)
Concerns:
High-voltage charger (OBC) control unit
Information:
Charging process of the high-voltage battery is cancelled and the Check Engine warning light comes on in

the instrument cluster. In many cases, it may be possible to continue charging the vehicle once the vehicle

plug has been disconnected and then re-connected to the vehicle.

This fault is caused by voltage fluctuations in the supply network (e.g. the domestic connection) to which the

high-voltage battery charger is connected.

The entry 'B200000 – Control unit, function restriction (E10105)' is stored in the fault memory of the

high-voltage charger (OBC) control unit as an active fault memory entry, which cannot be deleted initially. As

a result, the Check Engine warning light is not deactivated.
Action:
In the event of a customer complaint, re-programme the high-voltage charger (OBC) control unit using the

Porsche Tester and installed Porsche Tester test software release 43.800.000 (or higher) installed and the

corresponding programming code.
Required tools

Tools:
•

•
Battery charger with a current rating of at least 90 A, e.g. VAS 5908 battery charger 90 A. For further

information about the battery chargers to be used, see the corresponding Workshop Manual. ⇒

Workshop Manual '270689 Charging vehicle electrical system battery'

P90999 - P90999 - Porsche Tester 4 with Porsche Tester test software release 43.800.000 (or higher)

installed
AfterSales
Jan 20, 2026

Page 1 of 5
2
Service

2797
ENU
Technical Information
61/22
Preparatory work

WARNING

Electrically moved side windows and rear spoiler

•
Danger of limbs being trapped or severed
•
Risk of damage to components
Þ

⇒
Do not reach into the danger area.
Þ

⇒
Keep third parties away from the danger area.
Þ

⇒
Do not move components or tools into the danger area.
Þ

⇒
Retract roll-up sun blinds on the rear side windows before starting programming or coding.

NOTICE
Fault entry in the fault memory and control unit programming aborted due to undervoltage.

•
Increased current draw during diagnosis or control unit programming can cause a drop in voltage, which can result in

one or more fault entries and the abnormal termination of the programming process.
Þ

⇒
Before commencing work, connect a suitable battery charger with a charging current of at least 90 A to the jump-start

terminals in the engine compartment.

NOTICE
Control unit programming will be aborted if the Wi-Fi connection is unstable.

•
An unstable Wi-Fi connection can interrupt communication between the Porsche Tester and the vehicle communication

module (VCI). As a result, control unit programming may be aborted.
Þ

⇒
For control unit programming, always connect the Porsche Tester to the vehicle communication module (VCI) via the

USB cable.

NOTICE
Control unit programming will be aborted if the vehicle key is not recognized.

•
If the driver's key is not recognized in the vehicle, programming cannot be started or will be interrupted.
Þ

⇒
Place the driver's key with the back facing down into the front left storage compartment in the center console to

guarantee a continuous radio link between the vehicle and the driver's key.
Jan 20, 2026

Page 2 of 5
AfterSales
Service
Technical Information

Work Procedure: 1
2
61/22
ENU
2797
2
Place the driver's key with the back facing down

into the front left storage compartment in the

center console (emergency start tray) to guarantee

a continuous radio link between the vehicle and the

driver's key ⇒ Emergency start tray.

Carry out general preliminary work for control unit

programming as described in ⇒ Workshop Manual

'9X00IN Basic instructions and procedure for control

unit programming - section on "Preliminary work"'.
Emergency start tray
Re-program high-voltage charger (OBC) control unit

Information

The total time required for control unit programming is approx. 4 minutes.

Work Procedure: 1
The basic procedure for programming a control unit is described in the Workshop Manual ⇒ Workshop

Manual '9X00IN Basic instructions and procedure for control unit programming – section on

"Programming"'.

Specific information on control unit programming in the context of this Technical Information:
Required Porsche Tester test software release:
43.800.000 (or higher)
Type of control unit programming:
Control unit programming using the ‘Campaign’ function

in the Additional menu on the Porsche Tester by entering

a programming code.
Programming code:
B9A1Y
Programming sequence:
Read and follow the information and instructions on

the Porsche Tester during the guided programming

sequence.

During programming, the high-voltage charger (OBC)

control unit is re-programmed and then re-coded automatically.

Do not interrupt programming.
Programming time (approx):
4 minutes
AfterSales
Jan 20, 2026

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Technical Information
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Software release programmed during this

campaign:

The software release information in the

programmed data record is based on the

specified Porsche Tester test software release.

Please note that this may be different in a

higher release.
6126

•
Following control unit programming, the software

release can be read out of the high-voltage charger

(OBC) control unit from the ‘Extended identifications’ menu using the Porsche Tester.
Procedure in the event of error messages

appearing during the programming sequence:
⇒ Workshop Manual '9X00IN Basic instructions and
Procedure in the event of abnormal termination of control unit programming:
Repeat control unit programming by restarting

programming.
2
procedure for control unit programming - section on

"Troubleshooting"'.
Reading out and erasing fault memories.

Information

If control units are found to have faults that are not caused by control unit programming, these must

first be found and corrected.
Follow-up actions

Work Procedure: 1
Carry out general rework for control unit programming as described in ⇒ Workshop Manual '9X00IN

Basic instructions and work procedure for control unit programming using the PIWIS Tester - “Rework”

section'.
2
Switch off ignition.
3
Disconnect P90999 - P90999 - Porsche Tester 4 from the vehicle.
4
Remove the driver’s key from the emergency start tray.
5
Switch off and disconnect the battery charger.
Labor position and PCSS encryption

Labor position:

APOS
Labor operation
27972500
Programming high-voltage charger
Jan 20, 2026

Page 4 of 5
I No.
AfterSales
Service
Technical Information
61/22
ENU
2797
2
PCSS encryption:

Location (FES5)
27970
High-voltage charger
Damage type (SA4)
1613
not functioning at times
References:
⇒ Workshop Manual '9X00IN Basic instructions and procedure for control unit programming using the PIWIS

Tester'
Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training courses. They are

written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special tools may be necessary in

order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the safe operation of your vehicle, and

may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and safely. Part numbers listed in these bulletins

are for reference only. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a discrepancy, the work procedures in the PIWIS Tester

are the ones that must be followed.
© 2026 Porsche Cars North America, Inc.
AfterSales
Jan 20, 2026

Page 5 of 5

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