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IMPORTANT - All
Service Personnel
Should Read and
Initial in the boxes
provided, right.

SERVICE MANAGER

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SERVICE BULLETIN
APPLICABILITY:
SUBJECT:

2014-15MY Forester 2.0 DIT Models

NUMBER: 11-146-14
DATE: 09/24/14

Reprogramming Files for DTC P0420

INTRODUCTION
This bulletin announces the availability of reprogramming files to address DTC P0420 which may set
as a result of an incomplete ECM calculation during catalyst diagnosis.
COUNTERMEASURE IN PRODUCTION
The new logic was incorporated into production starting with VIN F*499037.
PACK FILE APPLICABILITY
MODEL / MODEL
YEAR

2014-2015MY
Forester 2.0L
Turbo

OLD ECM PART NUMBERS

NEW CID
NUMBER

22611AW066.pak 22611AW066

22611AW060, 061,
062, 063, 064, 065

AF56B00B

22765AG972.pak

22765AG970, 971

LF61500B

PAK FILE NAME

NEW ECM PART
NUMBER

22765AG972

NOTES:
SOA now highly recommends connecting the Midtronics GR8 Diagnostic Battery Charger to the
vehicle and utilizing the Power Supply Mode feature anytime a vehicle control module is being
reprogrammed. Once the GR8 is connected to the vehicle, as long as the battery is fully charged, it
takes less than 3 minutes to boot-up the charger, select the Power Supply Mode, and have the battery
voltage stabilized and ready for reprogramming.
VERY IMPORTANT: This information is applicable to the Midtronics GR8 Diagnostic Battery
Charger ONLY. It does not apply to any other brand / type of “generic” battery charger whatsoever.
ONLY the GR8 and its Power Supply Mode feature has been tested and approved by Subaru of
America, Inc. (SOA).
•

If the GR8 indicates the vehicle’s battery must be charged, charge the battery using the GR8
before proceeding to reprogram the vehicle while using the Power Supply Mode.

•

Control module failures as a result of battery discharge during reprogramming are not a
matter for warranty. Should any DTCs reset after the reprogramming update is performed,
diagnose per the procedure outlined in the applicable Service Manual.
Continued...

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.

Bulletin Number: 11-146-14; Date: 09/24/14

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.

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WARRANTY / CLAIM INFORMATION
For vehicles within the Basic New Car Limited and / or Emissions Warranty period, this repair may
be claimed using the following information:
LABOR DESCRIPTION

LABOR
OPERATION #

FAIL
CODE

LABOR
TIME

MFI OBDII ECM Reprogramming

A455-288

UPG-48

0.4

REMINDER: 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
refer to STIS for the latest service information before performing any repairs.

Bulletin Number: 11-146-14; Date: 09/24/14

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