122-D4S6F-04

Service
Technical Information
20/20
ENU
1055
1
Complaint - Check Engine Light Active Together with Fault Memory Entries Relating to
Oxygen Sensor (20/20)
Vehicle type:
Macan S (95B)/Macan Turbo (95B)/Cayenne (9YA)/Cayenne Coupé (9YB)
Model Year:
As of 2017
Subject:
Oil separator
Information:
On vehicles with active Check Engine light and fault memory entries:
•
•
•
•
P227000 - Oxygen sensor downstream of catalytic converter, bank 1 – signal too lean
and/or
P227200 - Oxygen sensor downstream of catalytic converter, bank 2 – signal too lean
and/or
P209800 - Lambda correction behind catalytic converter, bank 2 – lean control limit
exceeded and/or
P219800 - Oxygen sensor upstream of catalytic converter, bank 2 – signal too rich
the oil separator is being replaced for no reason.
Information
An oil film in the intake system and in the throttle valve, particularly in the intake tract of cylinder bank 2
and sometimes even with drops forming, is perfectly normal and is not the cause of the fault memory
entries for the oxygen sensors.
•
The one-sided introduction of crankcase full load ventilation on cylinder bank 2 results in a significantly larger oil film compared to cylinder bank 1.
•
The traces of oil occur particularly during frequent short journeys or in cold weather.
Replacing the oil separator will not correct the problem; PAG will not cover the costs of unwarranted replacement.
Continue fault finding to determine the cause of the fault memory entries for the oxygen sensors.
The attached sample pictures show a typical oil film in the intake system (oil film OK)  Throttle
valve Vent line on oil separator.
AfterSales
Mar 3, 2020
Page 1 of 4
1
Service
1055
ENU
Technical Information
20/20
Throttle valve
Vent line on oil separator
Vehicle type:
Panamera (971)
Subject:
Oil separator
Information:
On vehicles with active Check Engine light and fault memory entries:
•
•
•
•
Mar 3, 2020
Page 2 of 4
P227000 - Oxygen sensor downstream of catalytic converter, bank 1 – signal too lean
and/or
P227200 - Oxygen sensor downstream of catalytic converter, bank 2 – signal too lean
and/or
P209800 - Lambda correction behind catalytic converter, bank 2 – lean control limit
exceeded and/or
P219800 - Oxygen sensor upstream of catalytic converter, bank 2 – signal too rich
AfterSales
Service
Technical Information
20/20
ENU
1055
1
the oil separator is being replaced for no reason.
Information
An oil film in the intake system and in the throttle valve, particularly in the intake tract of cylinder bank 2
and sometimes even with drops forming, is perfectly normal and is not the cause of the fault memory
entries for the oxygen sensors.
•
The one-sided introduction of crankcase full load ventilation on cylinder bank 2 results in a significantly larger oil film compared to cylinder bank 1.
•
The traces of oil occur particularly during frequent short journeys or in cold weather.
Replacing the oil separator will not correct the problem; PAG will not cover the costs of unwarranted replacement.
Continue fault finding to determine the cause of the fault memory entries for the oxygen sensors.
The attached sample pictures show a typical oil film in the intake system (oil film OK)  Air cleaner
housing Throttle valve Vent line on oil separator.
Air cleaner housing
AfterSales
Mar 3, 2020
Page 3 of 4
1
Service
1055
ENU
Technical Information
20/20
Throttle valve
Vent line on oil separator
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.
© 2020 Porsche Cars North America, Inc.
Mar 3, 2020
Page 4 of 4
AfterSales