No. 2204

1
Bulletin #: 2204
Part ID: 1565
Advanced Technical Information
9YA, 95B, 971-Broken Valve Springs
Vehicles Affected
Models
Model Year
Model Type
VIN Range
Vehicle-Specific Equipment
Cayenne
As of 2021 up to 2022
All models (9YA)
N/A
N/A
Macan
As of 2021 up to 2022
S, GTS, Turbo (95B)
N/A
N/A
Panamera
As of 2021 up to 2022
All models (971)
N/A
N/A
Revision History
Revision
Release Date
Changes
0
February 12, 2022
Original document
Condition
Customer complains of misfiring, vehicle may experience loss of power, and/or have a warning in the display
indicating reduced power and enter limp or emergency drive mode. This condition applies to both V6 and V8
Engines.
Related Faults:
NOTE: Fault combination and sub-fault information may vary depending on engine type and DME software version.
DME
P01C900 - Fuel high-pressure system, bank 2, pressure - above limit value
P2ADF00 - Leak behind throttle valve, bank 2
P030000 - Random/Multiple Cylinder, Misfire Detected
P030X00 - Cylinder X misfiring
P031600 - Engine Misfire Detected on Startup (First 1000 Revolutions)
P036300 - Misfire Detected - Fueling Disabled
P016A00 - Excessive Time to Enter Closed Loop Air/Fuel Ratio Control
Instrument Cluster
B19A8F0 - Display of reduced engine output, active
P162400 - Engine control indicator light switched on
AfterSales
February 12, 2022
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Bulletin #: 2204
Part ID: 1565
Advanced Technical Information
Technical Background
The aforementioned faults/condition may be the result of a broken valve spring as shown in Figure 1. A manufac-		
tured batch of valve springs associated with the issue highlighted in this bulletin were quarantined by Parts
Withdrawal GR13D590 –PAB109623 (published December 8, 2021). Any remaining stock of springs not quaratined or new parts received are therefore considered safe to use for installation.
In many cases, failures occur in less than 1000km (620 mls) of runtime, of which the majority are below
500 km (310 mls).
Figure 1 - Broken Valve Spring
Service Information
A conventional misfire diagnosis is appropriate and necessary. If the mileage is low and the spark plugs are removed
for compression (leak down could mask issue), the use of a borescope in the affected cylinder(s) may more quickly
reveal if a valve(s) is not seated properly. More extensive, collateral damage will require the “Repair vs. Replace
Analysis” and normal warranty guidelines apply.
In the event one or more valve springs are broken, then ALL VALVE SPRINGS MUST BE REPLACED (INTAKE AND
EXHAUST). Please perform the repairs in accordance with the respective workshop instructions.
Vehicles previously repaired for a broken valve spring(s) require no further action at this time.
AfterSales
February 12, 2022
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Bulletin #: 2204
Part ID: 1565
Advanced Technical Information
Warranty
As always, please document the repair completely in PCSS.
For this repair, please code the “cause” as follows:
Cause location:
15650 Valve Spring
Cause symptom:
1511 Broken into pieces
Please employ the respective operations for relevant valve spring operation.
Search Items
971, 95B, 9YA, Valve, Valve spring, Fracture, Power loss, Intake, Exhaust, Pressure loss, Misfire, 15650
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.
A13376
©2022 Porsche Cars North America, Inc.
AfterSales
February 12, 2022
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