No. 86-20

Symptom-based workshop manual
Service
86/20
ENU
3838
3
Transmission Symptom - Yellow Warning Message, Jammed Claw Clutch, P1D2E00,
00ABC8 (SY 86/20)
Change overview:
Release
Date
Change
0
6/29/2020
•
First publication
1
7/20/2020
•
Update of Work Procedure
2
2/9/2024
•
•
Document completely revised
Affected order types and model years added
Model Line:
Taycan (Y1A / Y1B / Y1C)
Model Year:
As of 2020 up to 2024
Concerns:
Automatic transmission
Symptom:
The customer complains about an active yellow warning message “Transmission faulty driving permitted”.
The vehicle no longer changes into 2nd gear, but can still be moved forwards and backwards. From a
speed of 50 km/h (30 mph), the warning message “Transmission faulty - reduced driving possible”
appears on the instrument cluster.
The following fault memory entry is stored in the fault memory of the DME control unit:
•
P1D2E00 - Shift monitoring, claw clutch, timeout during disengagement (00ABC8)
Cause:
The symptom is caused by radial jamming of the claw clutch (claw clip) in the automatic transmission.
Remedial
Action:
If a complaint is made, perform an actuator test and, if necessary, release the jammed claw clutch with a
manual torque load.
Required tools
Tools:
•
•
P90999 - PIWIS Tester 4
Battery charger with a current rating of at least 90 A, e.g., VAS 5908 90-A battery charger. For
further information about the battery chargers to be used, see the corresponding Workshop Manual.
 Workshop Manual '270689 Charging vehicle electrical system and battery'
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3838
ENU
86/20
Symptom-based workshop manual
Review claw clutch clamps
Information
Always make sure that the power supply on the vehicle is not interrupted while working with the PIWIS
Tester. A battery charger with a current rating of at least 90 A must be connected to the vehicle battery.
The PIWIS Tester instructions take precedence and in the event of a discrepancy these are the
instructions that must be followed. Deviations may occur with later software releases.
The procedure described here has been structured in general terms; different text or additions may
appear in the PIWIS Tester.
Work Procedure: 1
2
Connect and switch on the battery charger.
Place original remote control in emergency start tray.
Information
Place remote control in
emergency start tray
Switch on ignition: Press the Start-Engine-Stop  StartEngine-Stop button -1- button without stepping on the
brake pedal.
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3
Connect PIWIS Tester to the vehicle and start. Switch
on the ignition.
4
Carry out actuator test for servo motor (clutches).
4.1
Select the DME control unit in the control unit
selection screen ( “Overview” menu).
4.2
Select the “Actuator tests” menu.
4.3
Select the ‘Campaign’ function and press •F12“ (‘Next’) to confirm your selection.
4.4
Select sequence for “ Servo motor (clutches) - select “F1 Help” and confirm with •F12“
(Next).
4.5
Observe preconditions for actuator testing under •F1“.
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Start-Engine-Stop button
Service
Symptom-based workshop manual
4.6
86/20
3838
3
Start the check from “Shift_Positon” by selecting value “2nd gear” and confirm with •F8“.
Assessment
( )
ENU
Check is performed and the 2nd gear is
engaged.
Action
Claw clutch not jammed.
Delete passive fault “P1D2E00 - Shift monitoring, claw clutch, timeout during installation
(00ABC8)”.
Continue with Step 5.
(✗)
Check is not performed and the 2nd gear is
not engaged.
Release jammed claw clutch manually.
Continue to  Technical Information '270689
manually release the jammed clutch'.
5
Erase fault memory.
6
Switch off ignition. Disconnect the PIWIS Tester from the vehicle.
Manually release the jammed clutch
Information
•
A jammed claw clutch can be released by a high torque drive in the transmission.
•
High torques can only be transferred on a dry and paved road.
•
The torque load can be achieved by accelerating several times with different loads (pedal positions)
and driving modes (no high speeds are necessary).
1
Have a second person to operate the PIWIS Tester during the test drive.
2
Review transmission position while driving.
2.1
Select the DME control unit in the control unit selection screen ( “Overview” menu).
2.2
Select the “Actual values input signals” menu.
2.3
Select the “G_Transmission” function and press •F12“ (‘Next’) to confirm your selection.
2.4
Select actual value “G030_Transmission position, actual position from sensor value” and
confirm with •F12“ (Next).
Information
Under ‘Value’ either “R / 1st gear” or “2nd gear” is displayed. If under ‘Value’ “2nd gear” is
displayd, the claw clutch has been freed.
2.5
Load vehicle at a suitable location with high torque requirements, changing between the
different loads and checking whether the transmission is shifting into second gear.
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ENU
Symptom-based workshop manual
86/20
Information
In rare cases, it may be necessary to carry out a Launch Control start (racing start) several
times in Sport+ mode by pressing the accelerator pedal several times after starting up.
It is mandatory to observe the respectively valid statutory regulations (road traffic regulations). Please also see the  Betriebsanleitung in the chapter “Launch Control”.
Assessment
( )
Action
Jammed claw clutch is released.
The automatic transmission changes to 2nd
gear.
•
•
•
(✗)
The automatic transmission does not change
to 2nd gear.
Delete passive fault “P1D2E00 - Shift
monitoring, claw clutch, timeout during
installation (00ABC8)”.
Switch off ignition.
Disconnect the PIWIS Tester from the
vehicle.
Jammed claw clutch cannot be released.
Replace the automatic transmission.
For procedure, see:
 Workshop Manual '373527 Removing and
mounting automatic transmission'
Labor position and PCSS encryption
Labor positions:
I No.
APOS
Labor operation
38380100
Check the C1 clutch
38384100
Repair clutch C1
37354101
Check and replace automatic transmission
PCSS encryption:
Location (FES5)
38380
Clutch 1
Damage type (SA4)
1712
sticks / gets stuck
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.
© 2024 Porsche Cars North America, Inc.
Feb 9, 2024
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