122-H9A7N-09

911 (991)
Technical Information
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If There is a Loss of Power or if a Fault Code is Stored in the Fault Memory: Checking
Wastegate Function (62/16)
Information
This Quick Information shall remain valid until such a time as PIWIS Tester software version 18.100
becomes available.
Until then, the following check must be performed.
Vehicle Type:
911 Carrera (991)
911 Carrera S (991)
Model Year:
2017
Subject:
Turbocharger – wastegate
Information:
If there is a loss of power or if the following fault codes are stored in the fault memory, the
wastegate must be checked for smooth operation and corrosion:
•
•
•
•
•
P0133 (Oxygen sensor upstream of catalytic converter, bank 1)
P0153 (Oxygen sensor upstream of catalytic converter, bank 2)
P0234 (Boost pressure control limit exceeded)
P0299 (Boost pressure control deviation)
P2262 (Boost pressure too low)
Remedial
Action:
•
•
•
•
Check wastegate on turbocharger bank 1 for smooth operation and corrosion.
Check wastegate on turbocharger bank 2 for smooth operation and corrosion.
If the wastegate shaft on turbocharger bank 1 is stuck, replace turbocharger on bank 1.
If the wastegate shaft on turbocharger bank 2 is stuck, replace turbocharger on bank 2.
Work
Procedure:
Always check the wastegate on both turbochargers. Perform each test step on turbocharger
bank 1 (left in direction of travel) first and then on turbocharger bank 2.
CAUTION
Hot components
•
Risk of burns

Let hot components cool down.

Wear personal protective gear.
1
Raise the vehicle.  Workshop Manual '4X00IN Lifting the vehicle'
2
Check actuating lever and wastegate shaft for corrosion.
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Technical Information
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Check actuating lever.
3.1
The actuating lever  Checking stop -1- must be at the stop  Checking stop -arrow-.
3.2
It must be possible to move the actuating lever  Checking stop -1- against the spring force
of the vacuum unit with your hand.
If the actuating lever is stuck, replace the relevant turbocharger.  Workshop Manual '213019
Removing and installing turbocharger'
If the actuating lever is at the stop and can be moved by hand, continue with Step 4.
Checking stop
4
Check wastegate shaft  Checking wastegate shaft -2-.
4.1
Check that the wastegate shaft  Checking wastegate shaft -2- moves smoothly internally.
4.2
Move the wastegate shaft  Checking wastegate shaft -2- using the actuating lever 
Checking wastegate shaft -1- in axial direction  Checking wastegate shaft -arrows-.
The axial play  Checking wastegate shaft -b- of the wastegate shaft  Checking
wastegate shaft -2- is about 0.5 mm.
A clear locking sound can be heard in both directions.
•
•
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If the wastegate shaft is stiff and/or if there is too much/not enough axial play, replace the relevant
turbocharger.  Workshop Manual '213019 Removing and installing turbocharger'
If the wastegate shaft moves freely and the axial play corresponds to the setpoint value, continue
with Step 5.
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Checking wastegate shaft
5
Perform vacuum test.
5.1
Disconnect vacuum line from the vacuum unit for the wastegate adjuster.
5.2
9160/1 - Tester must then be connected to the vacuum connection on the boost pressure
control valve.
5.3
Build up vacuum and compare setpoint values  Nominal values:
5.3.1
The actuating lever must start to move within the specified setpoint value.
5.3.2
The end position of the actuating lever must be reached within the specified
setpoint value.
5.3.3
The actuating lever must move evenly and without jerking.
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Nominal values
•
•
If the setpoint values are not reached and/or if the actuating lever does not move evenly, replace the
relevant turbocharger.  Workshop Manual '213019 Removing and installing turbocharger'
If the setpoint values are reached and the actuating lever moves evenly, continue with Step 6.
6
Check actuating lever travel.
6.1
The actuating lever  Lever travel -1- must travel a total distance  Lever travel -a- of
approx. 16 mm.
Lever travel
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If the actuating lever travel does not correspond to the setpoint value, replace the relevant
turbocharger.  Workshop Manual '213019 Removing and installing turbocharger'
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If the actuating lever travel corresponds to the setpoint value and if the wastegate is checked and
found to be OK, the fault is not due to the cause described here. Find the cause of the fault
and correct it.
•
Invoicing:
62/16
The work involved is invoiced under the labor operation:
I No.
Labor operation
For invoicing and documentation using PQIS, enter the following coding:
Location (FES5)
21300
Turbocharger
Damage type (SA4)
1711
Stiff, stuck, not enough play
References:
 Workshop Manual '213019 Removing and installing turbocharger'
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. If a particular condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your authorized Porsche Dealer for the latest information
about whether a particular technical bulletin applies to your vehicle. Part numbers listed in these bulletins are for reference only. Always check with your authorized Porsche dealer to verify the current and
correct part numbers. 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.
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