after 20%-30%

Vehicle

For this purpose, start
control unit programming in
the integration test using the
‘Campaign’ function •F5“
on the Porsche Tester
After it has been installed
correctly, continue with work
step 4

Select “Special function” in the
additional menu
Enter campaign code:
HCP5_ERROR_KD2
and follow the Tester instructions
•

•

AfterSales

Open “Control unit
overview”
Access “Gateway HCP5”
main control unit
Open “Service/Maintenance” menu
Select and execute “Set
time” menu item

For this purpose, start
control unit programming in
the integration test using the
‘Campaign’ function •F5“
on the Porsche Tester
After this has been
performed successfully,
continue with work step 4

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9

Service
WSJ0

ENU

Technical Information

2025

The progress of the
vehicle update is shown
on the Porsche Tester
only from approx. 30%
completion. This can be
up to 30 minutes after
the download

Diagnostic service
(RPC+) will not forward
the progress of the
update to the Tester
until it is approx. 30%
complete

Vehicle

HCP4 body electronics
main control device
(J519) reports
programming and
coding errors in the
results view

The affected control unit
was not successfully
programmed and coded

Vehicle

•
•

Correct behavior, no
intervention necessary
Wait until the progress is
displayed

Do not perform an ignition
change! This results in the
destruction of the control unit.
Fuses
•
•
•
•

J519 HCP4/1
J519 HCP4/2
J519 HCP4/4
J519 Secure

Pull, wait 30 seconds and plug it
back in correctly.
The fuses have different
parameters and must be
reinserted at exactly the same
location; for the correct fuse
positions, see: ⇒ Fuse positions
Select “Special function” in the
additional menu
Enter campaign code:
HCP4_ERROR_KD2
and follow the Tester instructions
•

•

•

Feb 9, 2026
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AfterSales

Please note! HCP4 is
therefore programmed, but
not coded – do not perform
an ignition change!
After successful
programming of the control
unit in the integration
test, re-start using the
‘Campaign’ function •F5“
After this has been
performed successfully,
continue with work step 4

Service

Technical Information

2025

AfterSales

ENU

WSJ0

9

Feb 9, 2026
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Service
WSJ0

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Technical Information

2025

HCP4 body electronics
main control unit (J519)
- front-end electronics

B1303F1

Rear lid proximity sensor
(J938), not taught

•

•
Charging communication 2 (J1246)

U19B200

HCP4 body electronics
main control unit (J519)
- front-end electronics

U206200.

Drive and chassis main
control unit HCP1
(J1312)

C147596
P1DBD00

Only for vehicles with
the following equipment:
Lane Change Assist
(M-No. 7Y8):

Motor drive flap power
supply 2 (VX87),
received error value

•
•

Intelligent ParkAssist
High, function restriction

•

For C147596 – oil pump
control internal fault
For P1DBD00 – rear axle
oil pump, engine speed
deviation

•

Fault:
Lane Change Assist
(M-No. 7Y8) not
functioning after
programming

•

•

Disconnect and
reconnect the plug at
the rear disconnection
point for the proximity
sensor
Then read out and delete
the fault memory again
Move the charge port
doors by hand twice
Then read out and delete
the fault memory again
Implement bus idle for
15 min
Then read out and delete
the fault memory again
Implement bus idle for
15 minutes.
Then read out and delete
the fault memory again

Reinitialize Lane Change
Assist.
•
•
•
•

Implement bus idle for
10 minutes.
Switch on ignition.
Fold out and fold in side
mirrors.
Carry out a test drive at
over 60 km/h / 37 mph
and check Lane Change
Assist.

If Lane Change Assist is
faulty or not working, repeat
the process.

Valid fault codes after the incremented software network VR28.13

Feb 9, 2026
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Control unit

Fault code

Description

Remedy

Brake electronics (J104)

C13F7F1

Bedding-in function,
active

•

AfterSales

Valid fault memory
entry after vehicle
handover

Service

Technical Information

2025

ENU

WSJ0

9

Front camera (R242)

B200FF2

Implausible signal

•

After the test drive:
Fault memory entry
passive

Front camera (R242)

U12EF00

Front camera for driver
assistance systems,
implausible signal

•

After the test drive:
Fault memory entry
passive

Front camera (R242)

U147C00

External communication
(J949), implausible
signal

•

After the test drive:
Fault memory entry
passive

Front camera (R242)

U198C00

Road graph, received
fault value

•

After the test drive:
Fault memory entry
passive

Drive and chassis main
control unit HCP1
(J1312)

U045D00

Driver assistance main
control unit HCP2
(J1274), ETHERNET
data bus driver
assistance, implausible
signal

•

After the test drive:
Fault memory entry
passive

Driver assistance main
control unit HCP2
(J1274)

B200FF2

Road graph, received
fault value

•

After the test drive:
Fault memory entry
passive

Checklist
Checklist:

Work step:

Scope:

Completed:

The checklist only refers to campaign WSJ0. A different checklist from
another campaign must not be used.
1. Battery charger set to charging mode and charging process on
charger activated?

All

2. Ignition switched off and on again?

All

3. VCI and Porsche Tester 4 connected to one other (with cable or Wi-Fi
with good network quality)?

All

4. Has the user logged into PPN on the Porsche Tester?

All

5. Seat heating and seat ventilation not active?

All

6. Original remote control in emergency start tray (position noted)?

All

7. Logging in the diagnostic tester started?

All

8. Vehicle Analysis Log (Pre-VAL) created?

All

AfterSales

Feb 9, 2026
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Service
WSJ0

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Technical Information

2025

9. Only for new vehicles: Vehicle handover performed in part as
described in section “Update on software network VR28.13” in order
to deactivate transport protection?

New vehicles

10 In the control unit overview, •F3“ pressed to start the integration
test and then •F5“pressed to select the ‘Campaign’ function?

All

11. Bus idle performed for 10 minutes?

All

12. Vehicle’s readiness for driving checked?

All

13. Fault memory read out and erased?

All

14. Side windows standardized?

All

15. Only for new vehicles: Vehicle handover completed?

New vehicles

16. Vehicle analysis log (first Post-VAL) created?

All

17. Plausibility check of the battery capacity performed?

All

18. Vehicle analysis log (second Post-VAL) created?

All

19. All four doors checked for correct locking?

All

20. Campaign entered in the Warranty and Maintenance logbook?

All

21. During the test drive:
21.1 GPS reconnected?
21.2 Tire settings checked and adjusted if necessary?

All

22. Were abnormalities detected during the plausibility check of the
battery capacity, and was the calculation of the range reset to the initial
values? Information is provided through the guided procedure with the
Porsche Tester.
Inform the customer about FAQs (Service Advisor)!

Scope 2

23. Does the vehicle have the Sport Chrono package (M-number 8LH or
8LU), and is the vehicle also operated by a secondary user?
Inform the customer about FAQs (Service Advisor)!

All

VIN:
Dealer number:

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.

Feb 9, 2026
Page 18 of 18

AfterSales