NHTSA ID Number: 10251094
Manufacturer Communication Number: 09-99-23R
TSB/Document Date: 2024-03-04
Summary
This bulletin addresses rare cases of engine surg or jolting when the operator releases the accelerator from half-throttle.
ATTENTION:
GENERAL MANAGER
q
PARTS MANAGER
q
CLAIMS PERSONNEL
q
IMPORTANT - All
Service Personnel
Should Read and
Initial in the boxes
provided, right.
SERVICE MANAGER
q
© 2023 Subaru
of America, Inc. All rights reserved.
SERVICE BULLETIN
APPLICABILITY: 2020-23MY Legacy & Outback 2.5L
2017-22MY Forester
2023MY BRZ
SUBJECT:
NUMBER: 09-99-23R
DATE: 01/24/23
REVISED: 02/05/24
Engine Surging/Jolting During Accelerator Release
DTC P0011 & P0021
INTRODUCTION:
This bulletin announces availability of reprograming files for the Engine Control Module (ECM)
to address rare cases of the engine surging/jolting when releasing the accelerator from half-throttle.
DTCs P0011 (A Camshaft Position – Timing Over-Advanced or System Performance Bank 1) and
P0021 (B Camshaft Position – Timing Over-Advanced or System Performance Bank 2) may also
be stored in the ECM when this occurs. The new files contain enhanced logic to optimize fuel trim
providing stabilized engine combustion during Exhaust Gas Recirculation (EGR) valve operation.
If this condition is duplicated and/or the referenced DTCs stored, reprogram the ECM using the
procedures outlined below.
PRODUCTION CHANGE INFORMATION:
These files were incorporated into vehicle production as per the table below.
Model
Starting VIN
Legacy
P3007589
Outback
P3149667
BRZ
P3007589
Forester
N/A
PFC FILE APPLICABILITY:
MY
23
Model
File Description
Old ECM Part #
New CID #
Legacy
22765AS49B.pfc
22765AS49A
XE1W041m00G
Outback
22765AS50B.pfc
22765AS50A
XE1W041n00G
BRZ (AT)
22765AT541.pfc
22765AT540
ZF2M300D00G
BRZ (MT)
22765AT551.pfc
22765AT550
ZF2M300C00G
These reprograming files will be available on SSM5-R.
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: 09-99-23R; Revised: 02/05/24
Page 1 of 4
PAK FILE APPLICABILITY:
MY
Model
File Description
Old ECM Part #
Decryption Keyword
New CID #
22765AN20F.pk2
22765AN20A
22765AN20B
22765AN20C
22765AN20D
22765AN20E
BF42DFD
XE1J402m00G
Outback
22765AP54F.pK2
22765AP54A
22765AP54B
22765AP54C
22765AP54D
22765AP54E
FDEA31B6
XE1J402n00G
Legacy
22765AR18D.pk2
22765AR18A
22765AR18B
22765AR18C
170D8F4E
XE1P502m00G
Outback
22765AR19D.pk2
22765AR19A
22765AR19B
22765AR19C
4C372166
XE1P502n00G
Legacy
22765AS22D.pK2
22765AS22A
22765AS22B
22765AS22C
69AE755E
XE1Q202m00G
Outback
22765AS23D.pk2
22765AS23A
22765AS23B
22765AS23C
F44C7C7E
XE1Q202n00G
22765AL827.pak
22765AL820
22765AL821
22765AL822
22765AL823
22765AL824
22765AL826
9AC50DB8
XE1FB00A
22765AN466.pak
22765AN460
22765AN461
22765AN462
22765AN463
22765AN464
22765AN465
585CB1E4
XE1M700a00G
22765AR675.pak
22765AR670
22765AR671
22765AR672
22765AR673
22765AR674
67CEEA2A
XE1P800a00G
22765AR604.pak
22765AR600
22765AR601
22765AR602
22765AR603
E1A8EC6C
XE1R600k00G
22765AR554.pak
22765AR550
22765AR551
22765AR552
22765AR553
B4E98F7C
XE1R600a00G
22765AR614.pak
22765AR610
22765AR611
22765AR613
22765AR612
73EC24BE
XE1R600z00G
Legacy
20
21
22
19
20
21
22
22
22
Forester
Forester
Forester
Forester
Forester
Forester
These files are included in the January 2023 SSM software update.
Bulletin Number: 09-99-23R; Revised: 02/05/24
Continued...
Page 2 of 4
SERVICE PROCEDURE / INFORMATION:
REMINDER: Customer satisfaction and retention starts with performing quality repairs.
•
2020-22 Models ONLY - Reprogram the ECM following the normal FlashWrite procedure.
•
2023 Models ONLY - Reprogram the ECM Control Module following the normal SSM5-R
procedure. Detailed information regarding the SSM5-R reprograming procedures can be
found in TSB 14-28-21.
Subaru of America, Inc. (SOA) highly recommends utilizing either the Subaru Midtronics DCA8000
Dynamic Diagnostic Charging System or the Subaru Midtronics GR8-1100 Diagnostic Battery
Charger to the vehicle in the Power Supply Mode feature anytime a vehicle control module is
being reprogrammed. Once the Midtronics charger is connected to the vehicle, if the battery is fully
charged, it will take less than three (3) minutes to boot-up the charger, select the Power Supply Mode,
and have the battery voltage stabilized and ready for reprogramming.
NOTES:
•
For instructions on using the Power Supply Mode, reference the applicable User Manual for
the Midtronics DCA-8000 Dynamic Diagnostic Charging System and the Midtronics GR81100 Diagnostic Battery Charger on STIS.
•
Confirm all electrical loads such as lights, audio, HVAC, seat heaters, and rear defroster are all
switched OFF before setting up the charger for Power Supply Mode.
•
Select the correct battery type (Enhanced Flooded, Flooded, Gel, AGM or AGM Spiral).
•
Input the CCA which matches the vehicle’s battery. NOTE: OE and replacement batteries have
different CCA ratings. Always confirm the battery’s CCA rating before proceeding.
•
If using a DCA-8000 Dynamic Diagnostic Charging System, set the power supply voltage to
13.5 Volts.
•
DO NOT connect the DST-i or DST-010 until the Power Supply mode function has completed
its
battery test mode and the Charging Voltage has dropped to and shows a steady 13.5 Volts on
the display.
•
Once Power Supply Mode reaches a steady 13.5 Volts, connect the DST-i or DST-010 to the
OBD connector and proceed with initiating the normal FlashWrite reprogramming process.
•
Amperage will fluctuate based upon the vehicle’s demand for power. NOTE: If the voltage
rises beyond 14 Volts while programming is in process, the procedure will abort. This can
indicate a need to test or charge the vehicle battery before any further attempt at programming
is made.
•
ALWAYS set the power supply voltage to 13.5 Volts when using Power Supply Mode. NEVER
turn the ignition switch on when charging at voltages 15 Volts or higher.
Continued...
Bulletin Number: 09-99-23R; Revised: 02/05/24
Page 3 of 4
REMINDER: If the DCA-8000 or GR8-1100 indicates the vehicle’s battery must be charged, charge
the battery fully before proceeding to reprogram the vehicle while using the Power Supply Mode.
NOTE: Control module failures resulting from 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.
VERY IMPORTANT:
This information is applicable to the Subaru Midtronics DCA-8000 Dynamic Diagnostic Charging
System and the Subaru Midtronics GR8-1100 Diagnostic Battery Charger ONLY. It does not apply to
any other brand / type of “generic” battery charger whatsoever. ONLY the DCA-8000 and the GR81100 and their Power Supply Mode feature have been tested and approved by SOA.
WARRANTY / CLAIM INFORMATION:
For vehicles within the Basic New Car Limited Warranty period, this repair may be submitted using
the following claim information:
Labor Description
Labor Operation #
Fail Code
Labor Time
MFI OBDII ECM Reprogramming
A455-288
UPG-48
0.4
IMPORTANT: Always note the original Calibration Identification number (CID) the vehicle came in
with on the repair order before reprogramming and, make sure to list the NEW CID for any newlyinstalled programming (as confirmed from the actual control module AFTER installation). The
NEW CID MUST also be noted on the repair order as this information is required for entry in the
Miscellaneous Detail field during claim submission.
NOTE: The PFC and PAK file listings provided in this bulletin are the latest available at the time
of publishing. Updates are often released thereafter without revision to the original bulletin. For this
reason, it is critical to always have the latest version of Select Monitor software installed on your
system. You can confirm if a later version is available by entering the CID listed in this bulletin into
FlashWrite. If a newer CID is shown as available in FlashWrite, reprogram using that file.
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: 09-99-23R; Revised: 02/05/24
Page 4 of 4
- 3X Stronger than the leading full synthetic*
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TSB/Document ID: 09-99-23R
Replacement Service Bulletin Number:
MFR Communication Date: 2024-02-05
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
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