No. 172-23

Service
Technical Information
172/23 ENU
2463
2
Pressure Drop in the Fuel High-Pressure System / DME Fault Memory Entries P008700 and
P01C800: Re-Programming DME Control Unit (172/23)
Vehicle Type:
718 Cayman GTS 4.0 (982) / 718 Boxster GTS 4.0 (982) / 718 Boxster 25 years (982)
718 Cayman GT4 (982) / 718 Spyder (982)
Model Year:
As of 2020 up to 2021
Concerns:
Fuel high-pressure quantity
Cause:
Customers complain about starting difficulties and/or smooth engine run in conjunction with the warning
message “Engine control fault” in the instrument cluster.
The following fault memory entries are stored in the fault memory of the DME control unit:
•
•
P008700 - Fuel high-pressure, bank 1 – pressure too low (000B16)
P01C800 - Fuel high-pressure, bank 2 – pressure too low (00403E)
Cause:
Due to a software error, the low-pressure fuel pump builds up too little fuel pressure, which can lead to an
undersupply of the high-pressure fuel pump.
Action:
In the event of a customer complaint, re-program the DME control unit using the PIWIS Tester.
Information
The minimum programming requirement is the PIWIS Tester software release: 42.250.030
Required tools
Tools:
•
•
Battery charger, e.g.: VAS 5906 - Battery charger or VAS 5908 - battery charger 90A
P90999 - PIWIS Tester 4
Re-programming DME control unit
1
The basic work procedure for control unit programming a control unit is described in the Workshop
Manual  Workshop Manual '9X00IN Basic instructions and procedure for control unit programming
using the PIWIS Tester - section on “Programming”'.
Specific information on control unit programming as part of this Technical Information:
Required PIWIS Tester software release:
42.250.030 (or higher)
AfterSales
Dec 21, 2023
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Service
Technical Information
ENU 172/23
2463
Type of control unit programming:
Control unit programming using the ‘Automatic
programming’ function of the DME control unit.
‘Motor electronics (DME)’ control unit –
‘Coding/programming’ menu – ‘Automatic
programming’ function.
Read and follow the information and instructions
on the PIWIS Tester during the guided
programming sequence.
During the programming sequence, the DME
control unit is re-programmed first, followed
by the PDK control unit or transmission control
unit, as the case may be.
Programming sequence:
Both control units are then automatically
re-coded.
Do not interrupt programming and coding.
Once the control units have been programmed and
coded, you will be prompted to switch the ignition off
and then back on again after a certain waiting time.
Backup documentation of the new software versions
is then performed.
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Dec 21, 2023
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Programming time (approx.):
Programming takes up to 15 minutes, depending
on equipment.
Data set for the motor electronics (DME)
programmed as part of this programming:
See section.  Technical Information '9X00IN
Overview of programmed DME data records'.
Procedure in the event of error messages
appearing during the programming
sequence:
 Workshop Manual '9X00IN Basic instructions and
Procedure in the event of a termination in
the control unit programming:
Repeat control unit programming by restarting
programming.
procedure for control unit programming using the
PIWIS Tester'.
Read out and delete all control unit error memories.
2.1
In the control unit selection (‘Overview menu’) press •F7“ to call up the Additional menu.
2.2
Select the function “Read all error memories and delete if necessary” and press •F12“
(‘Next’) to confirm.
3
End the diagnostic application. Switch off ignition. Disconnect Tester from vehicle.
4
Switch off and disconnect the battery charger.
AfterSales
Service
Technical Information
172/23 ENU
2463
2
Overview of programmed DME data records
Overview:
Information
The software part number and software release of the programmed data record are based on the
specified PIWIS Tester software release. Please note that this may be different in a later release.
718 Cayman GTS 4.0 / 718 Boxster GTS 4.0 / 718 Boxster 25 years
•
with Porsche Doppelkupplung (PDK)
Exhaust emission
standard
ULEV 70
Model year
2020
(L)
2021
(M)
–
2022
(N)
X
X
Porsche part number
(software)
Software
release
982906034AS
0001
718 Cayman GTS 4.0 / 718 Boxster GTS 4.0 / 718 Boxster 25 years
•
with manual transmission
Exhaust emission
standard
ULEV 70
Model year
2020
(L)
2021
(M)
–
2022
(N)
X
X
Porsche part number
(software)
Software
release
982906034BB
0001
Porsche part number
(software)
Software
release
982906033BE
0001
Porsche part number
(software)
Software
release
982906033BH
0001
718 Cayman GT4 / 718 Spyder
•
with Porsche Doppelkupplung (PDK)
Exhaust emission
standard
ULEV 70
Model year
2020
(L)
2021
(M)
–
X
2022
(N)
X
718 Cayman GT4 / 718 Spyder
•
with manual transmission
Exhaust emission
standard
ULEV 70
Model year
2020
(L)
–
2021
(M)
X
2022
(N)
X
AfterSales
Dec 21, 2023
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Service
Technical Information
ENU 172/23
2463
Labor position and PCSS encryption
Labor position:
APOS
Labor operation
24702501
Programming DME control unit
I No.
PCSS encryption:
Location (FES5)
24630
High-pressure fuel pump
Damage type (SA4)
5061
pressure too low
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.
© 2023 Porsche Cars North America, Inc.
Dec 21, 2023
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