ATTENTION:
GENERAL MANAGER

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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 BULLETIN
APPLICABILITY:

2023-24MY Legacy & Outback 2.5L
2019-22MY Forester

NUMBER: 09-112-23
DATE: 01/04/24

SUBJECT: DTCs: P0016, P0017, P0018, P0019 & P0087

INTRODUCTION:
This bulletin announces availability of new reprograming files for the Engine Control Module (ECM)
developed to remedy the following DTCs:
•

P0016: Crankshaft Position - Camshaft Position Correlation Bank 1 Sensor A

•

P0017: Crankshaft Position - Camshaft Position Correlation Bank 1 Sensor B

•

P0018: Crankshaft Position - Camshaft Position Correlation Bank 2 Sensor A

•

P0019: Crankshaft Position - Camshaft Position Correlation Bank 2 Sensor B

•

P0087: Fuel Rail/System Pressure – Too Low Bank 1

These files contain enhanced logic for the self-diagnosis program of the ECM and to optimize
stabilization of fuel pressure. If any of the DTCs listed above are found to be stored in the ECM,
follow the procedures outlined below.
PRODUCT CHANGE INFORMATION:
The production change information is currently TBD.

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: 09-112-23; Date: 01/04/24

Page 1 of 14

PFC FILE APPLICABILITY:
Model

Specification

2023

Model

File Name

Old Part Number

New CID

Legacy

22765AS49C.pfc

22765AS49A
22765AS49B

XE1W400m00G

Outback

22765AS50C.pfc

22765AS50A
22765AS50B

XE1W400n00G

Legacy

22765AT70B.pfc

22765AT70A

XE1W400L00G

Outback

22765AT71B.pfc

22765AT71A

XE1W400J00G

2.5L

2024

2.5L

Detailed information regarding the SSM5-R reprograming procedures can be found in
TSB 14-28-21R.
PAK FILE AVAILABILITY:
MY

19

20

21

22

Model

Forester

Forester

Forester

Forester

Specification

Old Part Number

File Description

Decryption
Keyword

New CID #

2.5L NA,
CVT

22765AL820
22765AL821
22765AL822
22765AL823
22765AL824
22765AL825
22765AL826

22765AL827.pak

A44B186E

XE1FB00A

2.5L NA,
CVT

22765AN460
22765AN461
22765AN462
22765AN463
22765AN464
22765AN465

22765AN466.pak

585CB1E4

XE1M700a00G

2.5L NA,
CVT

22765AR670
22765AR671
22765AR672
22765AR673
22765AR674

22765AR675.pak

67CEEA2A

XE1P800a00G

22765AR600
22765AR601
22765AR602
22765AR603

22765AR604.pak

E1A8EC6C

XE1R600k00G

22765AR550
22765AR551
22765AR552
22765AR553

22765AR554.pak

B4E98F7C

XE1R600a00G

22765AR610
22765AR611
22765AR612
22765AR613

22765AR614.pak

73EC24BE

XE1R600z00G

2.5L NA,
CVT

Continued...
Bulletin Number: 09-112-23; Date: 01/04/24

Page 2 of 14

SERVICE PROCEDURE / INFORMATION:

Continued...
Bulletin Number: 09-112-23; Date: 01/04/24

Page 3 of 14

(*1) Use the following instructions to perform and read the OBD MODE test results. This
procedure will be required when performing the diagnostic steps outlined below.

Read the following data monitor values:
1. MID - $35 TID - $8B
2. MID - $35 TID - $8C
3. MID - $35 TID - $8D
4. MID - $35 TID - $8E
5. MID - $36 TID - $8B
6. MID - $36 TID - $8C
7. MID - $36 TID - $8D
8. MID - $36 TID - $8E

Continued...
Bulletin Number: 09-112-23; Date: 01/04/24

Page 4 of 14

STEP 1: Are DTCs P0016, P0017, P0018, or P0019 displayed in the ECM fault memory?
YES – Proceed to STEP 2.
NO – If DTC P0087 is stored, perform the reprogramming procedures outlined in STEP 2
ONLY. The service procedure is finished, no further action is required. For any other
DTCs not mentioned in the bulletin, performe diagnosis and repair as per the applicable
Service Manual.

STEP 2: Reprogram the ECM following the normal Flashwrite or SSM5-R procedure. Detailed
information regarding the SSM5-R reprograming procedures can be found in TSB 14-28-21R.
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 and utilizing 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 takes 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 SSM5-R 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: 09-112-23; Date: 01/04/24

Page 5 of 14

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.
End of procedure for vehicles WITHOUT DTCs P0016, P0017, P0018, or P0019 stored in
the ECM.

STEP 3: Start the vehicle and allow to idle. Using the SSM, read the value the following four data monitor items
(ALWAYS Save SSM Data):
1. VVT Initial Position Learning Value #1
2. VVT Initial Position Learning Value #2
3. VVT EX Initial Position Learning Value #1
4. VVT EX Initial Position Learning Value #2

Are all of the data monitor item values within the acceptable range listed in the table above?
YES - proceed to STEP 5.
NO - proceed to STEP 4.
STEP 4: Perform the procedures outlined in “#7 INSPECTION MODE N” and “#10
INSPECTION MODE T”. Then re-check the threshold values in STEP 3 along with the OBD
MODE test results (*1)
“#7 INSPECTION MODE N” procedure.
Using the applicable Service Manual, refer to: DIAGNOSTICS > ENGINE> Inspection Mode> #7
DRIVE CYCLE N
A. Confirm the battery voltage is 12 Volts or more and the fuel tank is at least half full.
B. Using SSM, clear the fault memory. Prepare the SSM to be kept in the vehicle during the
following road test.
Continued...
Bulletin Number: 09-112-23; Date: 01/04/24

Page 6 of 14

C. With gear selector in the park position (neutral for MT models), idle the engine at
approximately 2500 rpm for 40 seconds or more.
D. Move the gear selector into the drive position (appropriate gear range for MT models.
Accelerate the vehicle to 31 mph or more.
E. When the vehicle speed is 31 mph or more, release the accelerator pedal and brake pedal
(and clutch for MT models) and allow the vehicle to decelerate without any gear shift
changes. Maintain the engine speed between 2500 rpm to 1900 rpm for 5 seconds during this
deceleration.
NOTE: Depending on road conditions, an appropriate gear might have to be selected to maintain the
desired engine speed. The vehicle speed is not important as long as the engine speed is within range
during the declaration
F. In a suitable area, safely bring the vehicle full stop and allow it to idle for 5 minutes.
“#7 INSPECTION MODE N” procedure is complete. Proceed to “#10 INSPECTION MODE T”
procedure.
“#10 INSPECTION MODE T” procedure.
Using the applicable Service Manual, refer to: DIAGNOSTICS > ENGINE> Inspection Mode > #10
INSPECTION MODE T
A. Confirm the battery voltage is 12 Volts or more the fuel is at least half full.
B. Start the engine.
C. Allow the engine to idle for at least 3 minutes.
D. Accelerate the vehicle speed to approximately 37 mph.
E. While maintaining approximately 37 mph, cycle the accelerator from a 0% to 20% opening angle.
Try to keep these cycles within 5 second intervals. Maintain this driving pattern for 20 minutes or
more.
NOTE: It is acceptable to stop the vehicle if needed depending on road/traffic conditions during this
driving pattern.
F. Release the accelerator pedal and brake pedal (and clutch for MT models) and allow the vehicle to
decelerate with any gear shift changes.
G. In a suitable area, safely bring the vehicle full stop and turn off the engine.

Continued...
Bulletin Number: 09-112-23; Date: 01/04/24

Page 7 of 14

“#10 INSPECTION MODE T” procedure is complete.
Read the threshold values from STEP 3 (pictured below) and the OBD MODE test results (*1)
Are all of the data monitor item values within the acceptable range listed in the table below? Are the
threshold values between -1000 to + 1000?

YES - The procedure is FINISHED.
NO - Repeat STEP 4 ONE TIME ONLY and if the result answer is still “NO”, proceed to STEP 6.

STEP 5: Perform the “#7 INSPECTION MODE N” and “#10 INSPECTION MODE T”
procedure.
“#7 INSPECTION MODE N” procedure.
Using the applicable Service Manual, refer to: DIAGNOSTICS > ENGINE> Inspection Mode > #7
INSPECTION MODE N
A. Confirm the battery voltage is 12 Volts or more the fuel is at least half full.
B. Using SSM, clear the fault memory. Prepare the SSM to be kept in the vehicle during the
following road test.
C. With gear selector in the park position, idle the engine at approximately 2500 rpm for 40
seconds or more.
D. Move the gear selector into the drive position. Accelerate the vehicle to 31 mph or more.
E. When the vehicle speed is 31 mph or more, release the accelerator pedal and brake pedal, allow
the vehicle to decelerate without any gear shift changes. Maintain the engine speed between 2500
rpm to 1900 rpm for 5 seconds during this deceleration.
NOTE: Depending on road conditions, an appropriate gear might have to be selected to maintain the
desired engine speed. The vehicle speed does is not important as long as the engine speed is within range
during the declaration.
F. In a suitable area, safely bring the vehicle full stop and allow it to idle for 5 minutes.

Continued...
Bulletin Number: 09-112-23; Date: 01/04/24

Page 8 of 14

“#7 INSPECTION MODE N” procedure is complete. Proceed to “#10 INSPECTION MODE T”
procedure.
“#10 INSPECTION MODE T” procedure.
Using the applicable Service Manual, refer to: DIAGNOSTICS > ENGINE> Inspection Mode > #12
INSPECTION MODE T
H. Confirm the battery voltage is 12 Volts or more the fuel is at least half full.
I. Start the engine.
J. Allow the engine to idle for at least 3 minutes.
K. Accelerate the vehicle speed to approximately 37 mph.
L. While maintaining approximately 37 mph, cycle the accelerator from a 0% to 20% opening
angle. Try to keep these cycles within 5 second intervals. Maintain this driving pattern for 20
minutes or more.
NOTE: It is acceptable to stop the vehicle if needed depending on road/traffic conditions during
this driving pattern.
M. Release the accelerator pedal and brake pedal (and clutch for MT models) and allow the
vehicle to decelerate with any gear shift changes.
N. In a suitable area, safely bring the vehicle full stop and turn off the engine.

“#10 INSPECTION MODE T” procedure is complete.
O. Using SSM, select Diagnosis > Each System > Engine > DTC > Readiness Code

Continued...
Bulletin Number: 09-112-23; Date: 01/04/24

Page 9 of 14

P. Read the readiness codes for P0016, P0017, P0018, P0019, P000A, P000B, P000C, and P000D.
Confirm the self-diagnosis is complete and that the codes are not pending.

Q. Check the DTC and data monitor threshold values. Using SSM, select Diagnosis > Select
Vehicle > OBD System – Each System > ECM-EngineControl > OBD MODE test results
(*1)
Are there NO DTCs present and the threshold values between -1000 to + 1000?
YES - The procedure is FINISHED.
NO - Proceed to STEP 6

STEP 6: Inspect the engine oil level and condition.
IMPORTANT: If the engine oil and filter were replaced prior to diagnosis, there is no need for
inspection. Proceed to STEP: 7.
Is there any abnormal condition or inappropriate oil level??
YES - Perform the engine oil and filter change. Repeat STEP 4 or STEP 5, then continue
diagnosis.
NO – Proceed to STEP 7
STEP 7: Performed the outlined timing chain inspection outlined below:
IMPORTANT: If the timing chain was replaced prior to diagnosis, there is no need to perform
the inspection. Proceed to STEP 8.
A. Using SSM, clear the fault memory.
B. Switch the ignition to the “OFF” position.
C. Disconnect the oil control solenoid valve connector on the bank with associated DTC.
Continued...
Bulletin Number: 09-112-23; Date: 01/04/24

Page 10 of 14

D. Switch the ignition switch to the “ON” position.
E. Using SSM and the engine not running, read the “VVT Advance Angle Value” data monitor
value.
F. Start the engine and read the “VVT Advance Angle Value” data monitor value for a duration
of 10 seconds.
G. Switch the ignition to the “OFF” position.

Is the “VVT Advance Angle Value” data monitor value out of -10 degrees to +10 degrees?
YES - Adjust and / repair the timing chain as needed. Repeat STEP 4 and STEP 5, then continue
diagnosis.
NO - Proceed to STEP 8.