NHTSA ID Number: 11030907
Manufacturer Communication Number: No. 09-26
TSB/Document Date: 2026-04-07
Summary
Technical information for a Permanent Fault Memory Entries “P1775”/“P071400”/“P184900” in Transmission Electronics Control Unit
Service
Technical Information
09/26 ENU
3730
3
Permanent Fault Memory Entries “P1775”/“P071400”/“P184900” in Transmission Electronics Control
Unit (PDK) (09/26)
Model Line:
918 Spyder
Cayman/Boxster (981/982)
911 (991/992)
Panamera (970/971)
Model Year:
As of 2012 up to 2022
Country/Market: USA (C02)
Puerto Rico (C02/C0A)
Canada (C36)
Concerns:
Transmission electronics control unit (PDK)
Situation:
The following fault memory entry is stored in the fault memory of the transmission electronics control unit
(PDK):
•
•
•
P1775 - Protective measures cannot be performed (001775)
P071400 - Transmission oil sump temperature sensor, open circuit (00C3B9)
P184900 - Replacement measures active (00C43F)
These fault memory entries are permanently stored and cannot be deleted.
Cause:
Due to a software error in the transmission electronics control unit (PDK), the internal test required for
deleting the fault memory cannot be carried out.
Information
Component replacement will not work in the case of this fault type.
Action:
In the event of a customer complaint, re-program the transmission electronics control unit (PDK) using the
Porsche Tester.
Information
The minimum programming requirement is the Porsche Tester software release:43.800.040 (or higher).
Information
After successful programming, the respective fault memory entries can be deleted.
AfterSales
Mar 23, 2026
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Service
3730
ENU
Technical Information
09/26
Required tools
Tool:
•
•
P90999 - Porsche Tester 4
Battery charger with a current rating of at least 90 A and a current and voltage-controlled charge map
for lithium starter batteries, 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
Charge battery and vehicle electrical system'
Re-programming transmission electronics control unit (PDK) - Cayman/Boxster (981)/911 (991)
Work Procedure: 1
Re-programming transmission electronics control unit (PDK)
The basic work procedure for control unit programming is described in the Workshop Manual.
⇒ Workshop Manual '9X00IN Basic instructions and procedure for control unit programming using the
PIWIS Tester'
Specific information on control unit programming during this campaign:
Required Porsche Tester software release:
43.800.040 (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:
Cayman/Boxster (981)/911 (991): T3F2R
Programming sequence:
Read and follow the information and instructions
on the Porsche Tester during the guided
programming sequence.
During the programming sequence, first the DME
control unit and then the transmission electronics
control unit (PDK), are re-programmed.
Both control units are then automatically
re-coded.
Do not interrupt the programming and coding
process.
Backup documentation for the re-programmed
software releases starts after programming.
Programming time:
Mar 23, 2026
Page 2 of 7
Programming takes up to 15 minutes, depending
on equipment.
AfterSales
Service
Technical Information
09/26 ENU
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Procedure in the event of error messages
appearing during the programming sequence:
⇒ Workshop Manual '9X00IN Basic instructions
and procedure for control unit programming using
the PIWIS Tester'
Procedure in the event of abnormal termination
of control unit programming:
Repeat control unit programming by re-entering
the programming code.
2
Read out and delete all control unit fault memories.
3
Exit the diagnostic application, switch off the ignition and disconnect P90999 - Porsche Tester 4 from
the vehicle.
4
Switch off and disconnect the battery charger.
⇒ Workshop Manual '270689 Charging the vehicle electrical system battery'
Re-programming transmission electronics control unit (PDK) - Panamera (970)
Work Procedure: 1
Re-programming transmission electronics control unit (PDK)
The basic work procedure for control unit programming is described in the Workshop Manual.
⇒ Workshop Manual '9X00IN Basic instructions and procedure for control unit programming using the
PIWIS Tester'
Specific information on control unit programming during this campaign:
Required Porsche Tester software release:
43.800.040 (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:
Panamera (970): Q8H3F
Programming sequence:
Read and follow the information and instructions
on the Porsche Tester during the guided
programming sequence.
During the programming sequence, first the DME
control unit and then the transmission electronics
control unit (PDK), are re-programmed.
Both control units are then automatically
re-coded.
Do not interrupt the programming and coding
process.
AfterSales
Mar 23, 2026
Page 3 of 7
3
Service
3730
ENU
Technical Information
09/26
Backup documentation for the re-programmed
software releases starts after programming.
Programming time:
Programming takes up to 15 minutes, depending
on equipment.
Procedure in the event of error messages
appearing during the programming sequence:
⇒ Workshop Manual '9X00IN Basic instructions
Procedure in the event of abnormal termination
of control unit programming:
and procedure for control unit programming using
the PIWIS Tester'
Repeat control unit programming by re-entering
the programming code.
2
Read out and delete all control unit fault memories.
3
Exit the diagnostic application, switch off the ignition and disconnect P90999 - Porsche Tester 4 from
the vehicle.
4
Switch off and disconnect the battery charger.
⇒ Workshop Manual '270689 Charging the vehicle electrical system battery'
Re-programming transmission electronics control unit (PDK) - 918 Spyder
Work Procedure: 1
Re-programming transmission electronics control unit (PDK)
The basic work procedure for control unit programming is described in the Workshop Manual.
⇒ Workshop Manual '9X00IN Basic instructions and procedure for control unit programming using the
PIWIS Tester'
Specific information on control unit programming during this campaign:
Mar 23, 2026
Page 4 of 7
Required Porsche Tester software release:
43.800.040 (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:
918 Spyder: N2B7G
AfterSales
Service
Technical Information
09/26 ENU
Programming sequence:
3730
3
Read and follow the information and instructions
on the Porsche Tester during the guided
programming sequence.
During the programming sequence, first the DME
control unit and then the transmission electronics
control unit (PDK), are re-programmed.
Both control units are then automatically
re-coded.
Do not interrupt the programming and coding
process.
Backup documentation for the re-programmed
software releases starts after programming.
Programming time:
Programming takes up to 15 minutes, depending
on equipment.
Procedure in the event of error messages
appearing during the programming sequence:
⇒ Workshop Manual '9X00IN Basic instructions
Procedure in the event of abnormal termination
of control unit programming:
and procedure for control unit programming using
the PIWIS Tester'
Repeat control unit programming by re-entering
the programming code.
2
Read out and delete all control unit fault memories.
3
Exit the diagnostic application, switch off the ignition and disconnect P90999 - Porsche Tester 4 from
the vehicle.
4
Switch off and disconnect the battery charger.
⇒ Workshop Manual '270689 Charging the vehicle electrical system battery'
Re-programming transmission electronics control unit (PDK) - Cayman/Boxster (982)/911 (992)/Panamera
(971)
Work Procedure: 1
Re-programming transmission electronics control unit (PDK)
The basic work procedure for control unit programming is described in the Workshop Manual.
⇒ Workshop Manual '9X00IN Basic instructions and procedure for control unit programming using the
PIWIS Tester'
Specific information on control unit programming during this campaign:
AfterSales
Mar 23, 2026
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Service
3730
ENU
Technical Information
09/26
Required Porsche Tester software version:
43.800.040 (or higher)
Type of control unit programming:
Control unit programming using the 'A utomatic
programming' function of the control unit:
'Transmission electronics (PDK)' control unit
– 'Coding/programming' menu – 'A utomatic
programming' function.
Programming sequence:
Read and follow the information and instructions
on the Porsche Tester during the guided
programming sequence.
During the programming sequence, first the DME
control unit and then the transmission electronics
control unit (PDK), are re-programmed.
Both control units are then automatically
re-coded.
Do not interrupt the programming and coding
process.
Backup documentation for the re-programmed
software releases starts after programming.
Programming time:
Programming takes up to 15 minutes, depending
on equipment.
Procedure in the event of error messages
appearing during the programming sequence:
⇒ Workshop Manual '9X00IN Basic instructions
Procedure in the event of abnormal termination
of control unit programming:
and procedure for control unit programming using
the PIWIS Tester'
Repeat control unit programming by restarting
programming.
2
Read out and delete all control unit fault memories.
3
Exit the diagnostic application, switch off the ignition and disconnect P90999 - Porsche Tester 4 from
the vehicle.
4
Switch off and disconnect the battery charger.
⇒ Workshop Manual '270689 Charging the vehicle electrical system battery'
Labor position and PCSS encryption
Labor position:
APOS
Labor operation
37302540
Programming transmission electronics control unit
Mar 23, 2026
Page 6 of 7
I No.
AfterSales
Service
Technical Information
09/26 ENU
3730
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PCSS encryption:
Location (FES5)
37300
Transmission electronics control unit
Damage type (SA4)
1134
programming error
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.
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Mar 23, 2026
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TSB/Document ID: No. 09-26
Replacement Service Bulletin Number:
MFR Communication Date: 2026-03-24
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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