No. 36-21-2 Service Bulletin/Repair Instructions

Service
Technical Information
36/21
ENU
2797
Complaint – Charging Process is Cancelled / Check Engine Warning Light is Active: Re-Program

High-Voltage Charger (OBC) Control Unit (36/21)
2
Change overview

Version
Date
Change
0
03/19/2021
•
First publication with interim solution so that the fault

memory can be erased
1
09/03/2021
•
Adaptation of the required Porsche Tester software version

for carrying out control unit programming
2
01/27/2026
•

•
Target software and Porsche Tester software release adapted

Update of Action
Vehicle Type:
Cayenne E-Hybrid (9YA/9YB)

Cayenne Turbo S E-Hybrid (9YA, 9YB)
Model Year:
As of 2019 up to 2021
Concerns:
High-voltage charger 3.6 kW (M no. KB1) — (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-program the high-voltage charger (OBC) control unit using the

relevant programming code.

Information

•
Control unit programming sets the fault memory entry 'B200000 – Control unit, function restriction

(E10105)' to passive, which can then be deleted.
•
Replacing the control unit will not correct the problem because the parts that are currently available use

the same software as the control unit that was the object of the complaint.
AfterSales
Jan 27, 2026

Page 1 of 5
2
Service

2797
ENU
Technical Information
36/21
Required tools

Information

The Cayenne is equipped as standard with a lithium starter battery, which must only be charged using

suitable battery chargers.

For further information about the battery chargers to be used, see:
Tools:
•
⇒ Workshop Manual '2706IN General information on the 12-volt lithium-ion battery'
•
⇒ Workshop Manual '270689 Charging vehicle electrical system battery'
•
Battery charger with a current rating of at least 90 A and - if required - also with a current and voltage

controlled charge map for lithium starter batteries, e.g. VAS 5908 90 A battery charger

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

installed
•
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 getting started, connect a suitable battery charger with a current rating of at least 90 A to the jump-start

terminals in the engine compartment.

NOTICE
Control unit programming will be aborted if the WiFi connection is unstable.

•
An unstable WiFi connection can interrupt communication between the Porsche Tester and the vehicle communication

module (VCI). As a result, control unit programming may be aborted.
⇒
During control unit programming, always connect the Porsche Tester to the vehicle communication module (VCI) via the

USB cable.
Jan 27, 2026

Page 2 of 5
AfterSales
Service
Technical Information
36/21
ENU
2797
2
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.
Work Procedure: 1
2
Position the driver key in the rear area of the left

cupholder in the center console between the holding

struts (emergency start tray) in order to guarantee a

permanent radio link between the vehicle and driver 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.

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:
V5P7S
AfterSales
Jan 27, 2026

Page 3 of 5
2
Service

2797
ENU
Technical Information
36/21
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
Software part number and software release

programmed during this campaign:
See section: ⇒ Technical Information '9X00IN Overview

of the programmed software versions'
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.
Following control unit programming, the software

part number and software release can be read out of

the "High-voltage charger" control unit (OBC) in the

'Extended identification' 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.
Overview of hardware and software release

Software

Overview:
Hardware part

number of the

high-voltage

charger (OBC)

control unit
Model year of the

vehicle
Software part

number
Software release

before control unit

programming
Software release

after control unit

programming
5QE915682BE
K (2019)
5QE915682FB
6119

or
6127
L (2020)
Jan 27, 2026

Page 4 of 5
AfterSales
Service
Technical Information
36/21
2797
2
6123
M (2021)

5QE915682BF
ENU
M (2021)
5QE915682FA
6119

or

6123
6127
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 the Porsche Tester 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 positions:

APOS
Labor operation
I No.
27972590
Programming high-voltage charger

PCSS encryption:
Location (FES5)
27970
High-voltage charger
Damage type (SA4)
1612
does not function at times
References:
⇒ Workshop Manual '2706IN General information on the 12-volt lithium-ion battery'

⇒ Workshop Manual '270689 Charging battery/vehicle electrical system'

⇒ 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 27, 2026

Page 5 of 5

Bestseller No. 1

ANCEL AD310 Classic Enhanced Universal OBD II Scanner Car Engine Fault Code Reader CAN Diagnostic Scan Tool, Read and Clear Error Codes for 1996 or Newer OBD2 Protocol Vehicle (Black)

CEL Doctor: The ANCEL AD310 is one of the best-selling OBD II scanners on the market and is recommended by Scotty Kilmer, a YouTuber and auto mechanic. It can easily determine the cause of the check engine light coming on. After repairing the vehicle's problems, it can quickly read and clear diagnostic trouble codes of emission system, read live data & hard memory data, view freeze frame, I/M monitor readiness and collect vehicle information.
Sturdy and Compact: Equipped with a 2.5 foot cable made of very thick, flexible insulation. It is important to have a sturdy scanner as it can easily fall to the ground when working in a car. The AD310 OBD2 scanner is a well-constructed mechanic tool with a sleek design. It weighs 12 ounces and measures 8.9 x 6.9 x 1.4 inches. Thanks to its compact design and light weight, transporting the device is not a problem. The buttons are clearly labelled and the screen is large and displays results clearly.
Accurate Fast and Easy to Use: The AD310 scanner can help you or your mechanic understand if your car is in good condition, provides exceptionally accurate and fast results, reads and clears engine trouble emission codes in seconds after you fixed the problem. This device will let you know immediately and fix the problem right away without any car knowledge. No need for batteries or a charger, get power directly from the OBDII Data Link Connector in your vehicle.
OBDII Protocols and Car Compatibility: Many cheap scan tools do not really support all OBD2 protocols. AD310 scanner as it can support all OBDII protocols such as KWP2000, J1850 VPW, ISO9141, J1850 PWM and CAN. This device also has extensive vehicle compatibility with 1996 US-based, 2000 EU-based and Asian cars, light trucks, SUVs, as well as newer OBD2 and CAN vehicles both domestic and foreign. Pls confirm with our customer service whether it is compatible with your vehicle before purchasing.
Home Necessity and Worthy to Own: This is an excellent code reader to travel or home with as it weighs less and it is compact in design. You can easily slide it in your backpack as you head to the garage, or put it on the dashboard, this will be a great fit for you. The AD310 is not only portable, but also accurate and fast in performance. Moreover, it covers various car brands and is suitable for people who just need a code reader to check their car.

Bestseller No. 2

MOTOPOWER MP69033 Car OBD2 Scanner Code Reader Engine Fault Scanner CAN Diagnostic Scan Tool for All OBD II Protocol Cars Since 1996, Yellow

Multi-Functions - Practical Multi-Functions OBD2 code reader features built-in OBD2 DTC lookup library, which help you to determine the cause of the engine light, read code, erase code, view freeze frame, I/M ready, vehicle information, data flow, real-time curve, get vehicle speed information, calculate load value, engine coolant temperature, get engine speed.
Wide Capability - Supports 9 protocols compatible with most 1996 US-Based, 2000 EU-Based and Asian cars, and newer OBD II & CAN domestic or import vehicles. Supports 6 languages - English,German, Dutch, Spanish, French, Italian.
2.8" LCD Display - Designed with a clear display 2.8" Large LCD screen - white backlight and contrast adjustment. No need any battery or charger, OBD reader gets the power directly from your vehicle through the OBDII Data Link Connector.
Compact Design - Car diagnostic scanner is equipped with a 2.5 feet long cable and made of a very thick flexible insulator.There are 6 buttons on OBD2 Scanner:scroll up/down,enter/exit and buttons that quick query VIN vehicle number& the DTC fault code.
ABS / Airbag codes NOT Supported - It is able to read and clear check engine information which is part of OBDII system, but it cannot work with non-OBDII systems, including ABS / Airbag / Oil Service Light, etc.

Bestseller No. 3

FOXWELL NT301 OBD2 Scanner Live Data Professional Mechanic OBDII Diagnostic Code Reader Tool for Check Engine Light

【Your Personal CEL Doctor – Read & Clear Engine Codes】The NT301 OBD2 scanner lets you read diagnostic trouble codes (DTCs), check em-issions readiness, turn off your Check Engine Light (CEL) or MIL, reset monitors, and view live data streams. It retrieves your vehicle's VIN instantly. Like all standard OBD2 scanners, it clears codes only after repairs are completed—if the issue persists, the code will return. Designed for DIYers who want to understand what’s really going on under the hood.
【Easy Code Reading – Just Plug & Play】Simply plug into the OBD2 port, turn the ignition to “ON” (engine off), and select the correct menu: Select OBDII-> Wait for seconds-> Select Read codes. For accurate results, ensure your vehicle is compatible and the OBD2 port is free from damage or wiring issues. No batteries needed— powered directly by your car.
【Live Data Graphing & Accuracy for Most OBD2 Vehicles】View and log live sensor data in graph form—monitor oxygen sensors, fuel trims, coolant temp, RPM, and more. Spot trends and suspicious values in real time. Compatible with most 1996+ gasoline cars, light trucks, and SUVs sold in the U.S., as well as many 2000+ European and Asian models. Also works on 12V diesel vehicles equipped with OBD2.
【S-mog Check Helper – Know Your Readiness Status at a Glance】With dedicated I/M readiness hotkeys and a simple Red-Yellow-Green LED indicator, you’ll instantly know if your vehicle is ready for em-issions testing. Built-in speaker provides audio feedback. No guesswork—just confidence before you head to the test center.
【A Must-Have Tool for Every Home Mechanic】Compact, rugged, and ready to use right out of the box. The 2.8” color screen is easy to read, even in daylight. No charging or setup required—just plug into the 16-pin DLC and start diagnosing. Recommended by professional mechanics on YouTube and trusted by DIYers worldwide.

Last update on 2026-03-23 / Affiliate links / Images from Amazon Product Advertising API

This product presentation was made with AAWP plugin.

Buffer Copy Email Facebook Flipboard Hacker News LinkedIn Messenger Mix Pinterest Print Reddit SMS Telegram Tumblr X VK WhatsApp Line Xing Threads