11-204-23

ATTENTION:
GENERAL MANAGER
q
PARTS MANAGER
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CLAIMS PERSONNEL
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IMPORTANT - All
Service Personnel
Should Read and
Initial in the boxes
provided, right.
SERVICE MANAGER
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© 2023 Subaru of America, Inc. All rights reserved.
SERVICE INFORMATION BULLETIN
APPLICABILITY:
		
SUBJECT:
2020-22MY Legacy & Outback 2.4L Turbo
2019-22MY Ascent
NUMBER: 11-204-23
DATE:
04/25/23
PCV Hose Design Change / Odor from Engine Area
INTRODUCTION:
This Service Information Bulletin announces a design change made to the Positive Crankcase
Ventilation (PCV) hose assembly. Enlarged clamps and a reinforced PCV hose material have been
incorporated into production to address rare cases of odor coming from the engine compartment. A
customer may describe this as a hot rubber, raw fuel, and/or hot oil-type odor. If confirmed, replace
the PCV hose assembly and the associated clamps with the new parts.
PRODUCTION CHANGE INFORMATION:
The new PCV hose assemblies were incorporated into vehicle production as per the VIN information
listed below.
Model
Starting VIN
LEGACY
N3012316
OUTBACK
N3180978
ASCENT
N3415317
PART INFORMATION:
REMINDER: Always order the most up-to-date replacement parts based on the specific VIN being
repaired.
Part Description
Part Number
HOSE ASSEMBLY-PCV
11815AC88D
GASKET-INTER COOLER
21896AA130
GASKET-AIR INT DUCT
14497AA080
IMPORTANT NOTE: The new clamps are included with the new PCV hose assembly.
CAUTION: VEHICLE SERVICING PERFORMED BY UNTRAINED PERSONS COULD
RESULT IN SERIOUS INJURY TO THOSE PERSONS OR TO OTHERS.
Subaru Service Bulletins are intended for use by professional technicians ONLY. They
are written to inform those technicians of conditions that may occur in some vehicles,
or to provide information that could assist in the proper servicing of the vehicle. Properly
trained technicians have the equipment, tools, safety instructions, and know-how to
do the job correctly and safely. If a condition is described, DO NOT assume that this
Service Bulletin applies to your vehicle, or that your vehicle will have that condition.
Subaru of America, Inc. is
ISO 14001 Compliant
ISO 14001 is the international standard for
excellence in Environmental Management
Systems. Please recycle or dispose of
automotive products in a manner that is friendly
to our environment and in accordance with all
local, state and federal laws and regulations.
Continued...
Bulletin Number: 11-204-23; Date: 04/25/23
Page 1 of 3
DESCRIPTION OF CHANGES:
SERVICE PROCEDURE / INFORMATION:
REMINDER: Customer satisfaction and retention starts with performing quality repairs.
The service procedures for the PCV hose assembly replacement remain unchanged. Always refer
to the applicable Service Manual and review the full requirements of the repair being performed.
The Service Manual procedures contain information critical to performing an effective repair the
first time, every time. This includes but is not limited to important SAFETY precautions, proper
inspection criteria, necessary special tools, required processes and related one-time-use parts needed
for a complete and lasting repair.
Refer to STIS: Engine > EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) > PCV
Hose
IMPORTANT NOTES:
•
DO NOT re-use the original PCV hose clamps. ONLY use the NEW clamps that come with
the NEW PCV hose assembly.
•
The Service Manual uses a black star () in the component breakdown illustrations to
indicate one-time use parts. O-Rings 14497AA080 & 21896AA130 (pictured below) are to be
replaced when the intercooler is removed.
Continued...
Bulletin Number: 11-204-23; Date: 04/25/23
Page 2 of 3
WARRANTY / CLAIM INFORMATION:
For vehicles within the Basic New Car Limited, California Emissions Performance & Defect
Warranty 5yr/50,000 miles, or Federal Emissions Performance Warranty 2year/24,000, this repair
may be submitted using the following claim information:
Labor Description
Labor Operation #
Labor Time
Fail Code
CRANKCASE VENT HOSE R&R
A456-231
0.5
HCG03
IMPORTANT REMINDERS:
•
SOA strongly discourages the printing and/or local storage of service information as previously
released information and electronic publications may be updated at any time.
•
Always check for any open recalls or campaigns anytime a vehicle is in for servicing.
•
Always refer to STIS for the latest service information before performing any repairs.
Bulletin Number: 11-204-23; Date: 04/25/23
Page 3 of 3