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PDK Transmission Diagnosis, Symptoms and Repair Procedures (43/10)

Information
This Technical Information replaces the TI dated May 15, 2014.
Changes/additions compared to the previous Technical Information: The fault code P17E0 was added
in section 1.3 - Overview of fault memory entries for gear selection.

Information
This Technical Information replaces the TI dated May 24, 2012.
Changes/additions compared to the previous Technical Information:
New PDK Diagnostic Flow Charts dated 03/2014.
Vehicle Type:

Panamera S/Panamera 4S/Panamera Turbo

Model Year:

As of 2010 up to 2016

Equipment:

Porsche Doppelkupplung (PDK) – I-no. 250

Concerns:

PDK transmission/control unit for PDK transmission

Information:

Procedure and repair measures in the event of complaints relating to PDK:
•
•
•
•
•

Gearbox emergency operation/other warning messages
Fault memory entries in the fault memory of the PDK control unit
Leaks on the PDK transmission
Complaints relating to comfort
Complaints relating to noises

This Technical Information is divided into the following sections:
•
•
•
•

 Technical Information '373000 1 - Procedure and repair measures in the event of fault entries in
the fault memory of the PDK control unit'
 Technical Information '373000 2 - Repair measures in the event of leaks on the PDK transmission'
 Technical Information '373000 3 - Remedial action and repair measures in the event of
complaints relating to comfort and noise'
 Technical Information '373000 4 - Procedure in the event of noises on the PDK transmission'

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Information

•

Always create a Vehicle Analysis Log (VAL) before starting any measures  Workshop
Manual '0X03IN Creating Vehicle Analysis Log (VAL)'.

•

When evaluating faults, also bear in mind the detailed information contained or stored in the
relevant fault code (measured values, etc.).

•

Make sure the version of the 9900 - PIWIS Tester III software you are using is the latest version.

•

If components are replaced: Return components to the Porsche and document all measures in
PIWIS/PQIS.

Information
Information on PDK calibration and engine torque loss adaptation
Engine torque loss adaptation
Engine torque loss adaptation must always be performed before calibrating PDK. Engine torque loss
adaptation is also required after carrying out control unit programming (DME/PDK – with or without
part replacement).
Conditions/procedure for engine torque loss adaptation:
•

Engine temperature is at least 176° F. (80° C.) (read out the temperature from the PDK control unit
by selecting “Actual values/Input signals” > “CAN input signals - Engine temperature”).

•

All loads switched off.

•

PDK selector lever in position P.

•

Allow engine to run at idle speed for 3 minutes with air conditioning switched off.

•

Then allow engine to run at idle speed for 3 minutes with air conditioning switched on.

•

Switch off ignition and wait 15 seconds (adaptation values are stored).

PDK calibration
Essentially, PDK calibration is required only after replacing parts (of the PDK control unit, hydraulic
switch unit, PDK transmission) or if you are expressly instructed to do so during troubleshooting.
PDK calibration can be started by selecting the PDK control unit under > “Maintenance/repairs” >> “Calibration (complete process)” using PIWIS Tester II. Shift travel, hydraulics and clutches are calibrated
during calibration.
It is not possible to perform a “minor” calibration routine (“Calibration without previous part replacement”)
– which you may be familiar with from the Boxster, Cayman and Carrera sports cars – on the Panamera.
Engine torque loss adaptation must always be performed before carrying out calibration.
The preconditions for engine torque loss adaptation and PDK calibration are summarised again in the
following overview:

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Activity
(What was done?)

Engine torque loss adaptation required

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PDK calibration
required*

PDK control unit re-programmed
(without previous part replacement)

Yes

No**

PDK control unit replaced

Yes

Yes

Hydraulic switch unit replaced

Yes

Yes

PDK transmission replaced

Yes

Yes

* Engine torque loss adaptation must always be performed before carrying out PDK calibration.
** Exception: There are other faults present and calibration is expressly recommended in order to
correct these faults.

1 - Procedure and repair measures in the event of fault entries in the fault memory of the PDK control
unit
Work Procedure: 1

Procedure and repair measures in the event of fault entries in the fault memory of the PDK
control unit.
The required procedure for correcting faults for the groups of fault memory entries listed below is
described using flow charts.
A separate flow chart is used for each of the fault groups specified below.
Information
You will find the flow charts under the heading “3730 – Flow charts of PDK fault codes
(970)” in the information medium TI – Technical Information releases, main group 3 –
Transmission.
In addition to the flow charts, Guided Fault Finding in PIWIS Tester II must always be used during
troubleshooting for existing fault memory entries. In some cases, you are directed to the required
guided fault finding from the flow charts. The procedure for required electric testing is stored only
under Guided Fault Finding in PIWIS Tester III.
Sequence for correcting faults if various fault entries from various fault groups are present:
1) Electrical faults
2) Sensor faults/software faults
3) Gear selection faults
Fault correction for complaints relating to comfort and noise must only be carried out after the
faults listed above (if present) have been found and corrected.
1.1

Electrical faults

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Electrical faults include all fault memory entries relating to fault type
– Short circuit to ground
– Short circuit to B+
– Shunt
– Open circuit
– Incorrect voltage (operating limit, undervoltage, overvoltage)
.
Correct faults as shown in Flow chart EF – Electrical faults.
1.2

Sensor faults/software faults
“Sensor faults” include all fault memory entries relating to the components
– Distance sensor
– Speed sensor
– Pressure sensor
– Temperature sensor
.
Correct faults as shown in Flow chart SF0 – SF5.
Overview of fault memory entries for distance sensor (Flow chart SF1)
– P1731 ... to P1734: Distance sensor information/shift rod faults (outside of validity range)
Overview of fault memory entries for speed sensor (Flow chart SF2)
– P0730:
– P1743:
– P1744:
– P1745:

Transmission monitoring symptom - incorrect gear ratio
Plausibility of transmission input shaft speed sensor clutch 1
Plausibility of transmission input shaft speed sensor clutch 2
Input shaft overspeed

Overview of fault memory entries for pressure sensor (Flow chart SF3)
– P0841, P0846 and P0871: Pressure sensor fault (measured value implausible)
– P17B1 and P17B2: Clutch fault (activation pressure implausible)
– P17B3 and P17B4: Clutch valve fault (valve pressure stays too high mechanically during
overlap switching after quick filling)
– P17BB ... to P17BE: Clutch fault (clutch cannot be opened)
Overview of fault memory entries for temperature sensor (Flow chart SF4)
– P0711: Transmission temperature sensor implausible
– P172D: Transmission temperature sensor gradient fault
– P17F0 to P17F2: Transmission overtemperature
Overview of fault memory entries for software faults (Flow chart SF5)

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– P0602: PDK control unit not programmed
– P0603 ... to P605: PDK control unit, internal fault
– P0614: Data status does not match engine
– P0702: PDK control unit, internal fault
– P1715: PDK control unit, internal fault
– P1749: PDK control unit, variant coding invalid
– P174B: PDK control unit, interchange detected
– P174C: BIN file does not match software version
– P174E: EEPROM content at system start incorrect/implausible
– P186F ... to P1872: PDK control unit, internal fault (electric synchronisation data, shift rod
compensation, clutches and hydraulics)
– P1897, P189A, P189C, P189D: PDK control unit, internal fault (software monitoring)
– P18A0 ... to P18B5: PDK control unit, internal fault (software monitoring)
– P18D0: Clutch, BIN file implausible
– Uxxxx: CAN fault
1.3

Overview of fault memory entries for gear selection
– P17D0 ... to 17D9: Hydraulic gear selection, system fault
– P1779, P177A ... to P177F: Synchroniaation fault – gear cannot be disengaged (disengagement block)
Other fault entries relating to the fault memory entries specified above that can be entered in
the fault memory of the PDK control unit.
– P18B4: PDK control unit, internal fault (software monitoring) with fault type $36/$37/$38
– P17E0 (new information): Hydraulic emergency hold function cannot be cancelled due to
mechanical blockage. The fault can also be caused by a leak in the clutch if the expected
pressure is not reached.
Correct faults as shown in Flow chart GS.

2 - Repair measures in the event of leaks on the PDK transmission
Information
General information on how to deal with leaks on the PDK transmission
The exact site of the leak must be determined in order to be able to define the required repair measures.
If this is not possible at first, carry out the following steps one after the other:
•

Clean the transmission

•

Perform a test drive

•

Check the transmission for leaks and find the leak.

Once you have found the leak, carry out the required repair measures in accordance with the following
overview.

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Once you have repaired the leak, always check the transmission fluid level and correct it if necessary 
Workshop Manual '370235 Checking and topping up ATF'.
Work Procedure: 2

Repair measures in the event of leaks on the PDK transmission
Item

Description

Possible cause(s)

Remedial action

1

Leak in the side shaft
and connecting shaft
area  Figure 1 -item 1-

O-ring on connecting shaft
damaged

Replace O-ring on
connecting shaft (Part No.
999.701.640.xx). For
instructions on removing and
installing the connecting shaft,
see  Workshop Manual
'373419 Removing and installing
Porsche Doppelkupplung (PDK)'.

2

Leak between
transmission housing
and side shaft  Figure
1 -item 2-

Radial shaft seal damaged

Replace radial shaft seal (Part
No. 970.302.885.xx) 
Workshop Manual '387055
Replacing sealing ring for output
shaft'

3

Leak around the oil
cooler connections
 Figure 1 -item 3-

O-rings on oil lines for oil
cooler damaged

Replace O-rings (Part No.
999.707.647.xx) on the oil lines.
For details, see  Workshop
Manual '386219 Removing and
installing line for ATF cooling'.

Oil line for oil cooler
damaged

Replace oil line (Part No.
970.307.082.xx)  Workshop
Manual '386219 Removing and
installing line for ATF cooling'.

Housing screw(s) loose

Replace PDK transmission
 Workshop Manual
'373455 Replacing Porsche
Doppelkupplung (PDK)'.

4

Leak between
distributor housing
and transmission
housing Figure 1
-item 4-

Seal damaged

The exact site of the leak
must be located.
It is important to be sure
that the leak is actually
between the distributor
housing and transmission
housing and that the
transmission fluid that
is found is not coming

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