No. 1804.1

2
Bulletin #: 1804.1
Advanced Technical Information
Part ID: 2473
Panamera (971) Rear O2 Sensor Replacement
Vehicles Affected
Model
Model Year
Model Type
VIN Range
Vehicle-Specific Equipment
Panamera
As of 2017
up to 2020
97AAA1, 97ABA1, 97ABE1, 97ADB1,
97BAA1, 97BBA1, 97BBE1, 97BDB1,
97CBA1, 97CBE1, 97CDB1, 97CHE1
N/A
N/A
Revision History
Revision
Release Date
Changes
0
October 2, 2018
Original document
1
October 23, 2020
Content update
Customer Concern
The fault entries P227000/P227200 “O2 Sensor Signal Stuck Lean Bank X Sensor 2” and/or P209600/P209800
“Post Catalyst Fuel Trim System Bank x Too Lean” in combination with a check engine light. The MIL remain active 		
after an engine restart. Most cases are for vehicles with mileages between 7,000 to 50,000 miles.
Technical Background
	The rear O2 sensor(s) is found to be bad. The sleeve on the O2 sensor was being heated enough that the fumes from
it were contaminating the sensor.
Service Information
Replace the oxygen sensor downstream of the catalytic converter (Sensor 2). Please consult PET for the current,
appropriate sensor.
AfterSales
October 23, 2020
Page 1 of 2
Bulletin #: 1804
Advanced Technical Information
Part ID: 2473
2
Search Items
O2 sensor; Oxygen sensor; Rear O2 sensor; P227000/P227200 “O2 Sensor Signal Stuck Lean Bank X Sensor 2”; 		
P209600/P209800 “Post Catalyst Fuel Trim System Bank x Too Lean”
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.
A1482/A11937
©2020 Porsche Cars North America, Inc.
AfterSales
October 23, 2020
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