122-P7P6D-08

8
Bulletin #: 1801
Advanced Technical Information
Part ID: 8791
Cayenne AC Evaporator Drains Clogging
Vehicles Affected
Model
Model Year
Model Type
VIN Range
Vehicle-Specific Equipment
Cayenne
2014 - 2017
92A
N/A
N /A
Revision History
Revision
Release Date
Changes
0
July 11, 2018
Original document
Customer Concern
	Customer complains of water in the floorboard and/or a musty smell in the vehicle. The air conditioner evaporator
drain is clogged. Water backs up in the AC plenum and overflows into the vehicle interior.
Technical Background
	The issue is caused by incomplete cutting of the drain flap at the parts supplier. When the flap is not cut all the way
back, it is not able to open fully. The drain will clog.
Service Information
	A new drain may be installed. It is also possible to complete the cut on the drain flap so the flap opens fully. The drain
should then be cleaned and reinstalled.
AfterSales
July 20, 2018
Page 1 of 2
Bulletin #: 1801
Advanced Technical Information
Part ID: 8791
8
Production Information
	The supplier implemented an inspection procedure to insure that all flaps have a complete cut that allows full flap
opening. All vehicles produced since October 16, 2017 are known to have good drains installed. Parts have been
withdrawn from the PDCs and all parts in stock are known good parts. The part number has not changed since there
was no change in design or materials. 955.572.333.01
Search Items
AC drain; leak; water leak; wet floorboard; wet carpet; evaporator drain
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.
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AfterSales
July 20, 2018
Page 2 of 2