09-109-23

ATTENTION:
GENERAL MANAGER
q
PARTS MANAGER
q
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:
2016-19MY Legacy & Outback
SUBJECT:
NUMBER: 09-109-23
DATE:
DTC P2404 / Reprogramming Files
07/25/23
INTRODUCTION:
This bulletin announces diagnostic procedures along with availability of new Engine Control Module
(ECM) reprogramming files to address DTC P2404 (Evap System Leak Detection Pump Sensor
Circuit Range/Performance) detection. In rare cases, condensation can accumulate within the internal
pump for the Evaporative Leak Check Module (ELCM) causing improper operation. The new logic
incorporates a cleaning mode for the ELCM pump to provide added protection. If P2404 is found
stored in the ECM memory, follow the procedures outlined below.
PAK FILE APPLICABILITY:
Model
MY
16
16
Spec.
2.5L NA,
MT
2.5L NA,
CVT
File Name
Old Part Number
Decryption
Keyword
New CID #
22765AJ13G.pak
22765AJ13A
22765AJ13B
22765AJ13C
22765AJ13D
22765AJ13E
22765AJ13F
81D16D74
EB4I360A
22765AJ14G.pak
22765AJ14A
22765AJ14B
22765AJ14C
22765AJ14D
22765AJ14E
22765AJ14F
9FBD8A92
EB4I360C
22765AJ15G.pak
22765AJ15A
22765AJ15B
22765AJ15C
22765AJ15D
22765AJ15E
22765AJ15F
3ADF94F5
EB4I360B
22765AJ17F.pak
22765AJ17A
22765AJ17B
22765AJ17C
22765AJ17D
22765AJ17E
0601B6A4
DB4I360D
Legacy &
Outback
16
16
2.5L NA,
CVT
3.6 L NA,
CVT
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: 09-109-23; Date: 07/25/23
Page 1 of 11
Model
MY
17
17
17
Spec.
2.5L NA,
CVT
2.5L NA,
CVT
2.5L NA,
CVT
File Name
Old Part Number
Decryption
Keyword
New CID #
22765AK49H.pak
22765AK49A
22765AK49B
22765AK49C
22765AK49D
22765AK49E
22765AK49F
22765AK49G
6217255B
EB4I560A
82201AK48H.pak
22765AK48H.pak
22765AK48A
22765AK48B
22765AK48C
22765AK48D
22765AK48E
22765AK48F
22765AK48G
5F49B685
EB4I560C
22765AK50H.pak
22765AK50A
22765AK50B
22765AK50C
22765AK50D
22765AK50E
22765AK50F
22765AK50G
DAEEA764
EB4I560B
82CDECD6
DB4I560D
Legacy &
Outback
17
3.6 L NA,
CVT
22765AK31G.pak
22765AK31A
22765AK31B
22765AK31C
22765AK31D
22765AK31E
22765AK31F
18
2.5L NA,
CVT
82201AK85E.pak
22765AK89E.pak
22765AK85A
22765AK85B
22765AK85C
22765AK85D
DF9B30D7
EB4T800C
18
3.6 L NA,
CVT
22765AK89E.pak
22765AK89A
22765AK89B
22765AK89C
22765AK89D
E319774E
DB4T800D
19
2.5L NA,
CVT
22765AN06D.pak
22765AN06A
22765AN06B
22765AN06C
12D316B6
EB4VA00C
19
3.6 L NA,
CVT
82201AN11E.pak
22765AN11E.pak
22765AN11A
22765AN11B
22765AN11C
FB343B30
DB4VA00D
These reprogramming files have been included in the June 2023 SSM software update.
Continued...
Bulletin Number: 09-109-23; Date: 07/25/23
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Service Procedure Flowchart:
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Continued...
Bulletin Number: 09-109-23; Date: 07/25/23
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SERVICE PROCEDURE / INFORMATION:
STEP 1: Using Subaru Select Monitor (SSM), check for diagnostic trouble codes P2404. Confirm
P2404 is stored and proceed to the next step.
STEP 2: Are any of the diagnostic trouble codes listed below also stored withing the ECM?
•
P2419 - Evap System Switching Valve Control Circuit Low
•
P2420 - Evap System Switching Valve Control Circuit High
•
P2401 - Evap System Leak Detection Pump Control Circuit Low
•
P2402 - Evap System Leak Detection Pump Control Circuit High
•
P24BA - Evap System Leak Detection Pump Pressure Sensor Circuit Low
•
P24BB - Evap System Leak Detection Pump Pressure Sensor Circuit High
•
P24B9 - Evap System Leak Detection Pump Pressure Sensor Circuit Range/Performance
		 NO – Proceed to STEP 3.
		 YES – Perform diagnosis following the applicable Service Manual. Once 			
			
repaired, perform the reprograming procedure outlined in STEP 11.
STEP 3: Refer to the applicable Service Manual and review: General Description > Repair Contents
> Action required before & after Battery Disconnect. Additionally, record any stored seat position(s)
before proceeding. Relearn any seat position memory after work is complete. If the power rear gate
(PRG) height has been customized, that position must also be noted and relearned. CAREFULLY
disconnect the ground terminal from the battery sensor.
Continued...
Bulletin Number: 09-109-23; Date: 07/25/23
Page 5 of 11
STEP 4: Remove the left rear wheel and mud guard. Refer to STIS: Body & Electrical/WIRING
SYSTEM > EXTERIOR/INTERIOR TRIM > Mud Guard
STEP 5: CAREFULLY disconnect the ELCM drain tube. Inspect for signs of water or oil.
Have signs of water or oil been detected withing the ELCM drain tube?
YES – Clean and dry the drain tube using a non-alcohol base cleaner. Proceed to STEP 6.
NO – Proceed to STEP 6.
STEP 6: Connect the vehicle to a recommended power supply. See APPENDIX A for addition
information regarding power supply. Using SSM, perform the Evaporative System Leak Test. Collect
and save all data.
Continued...
Bulletin Number: 09-109-23; Date: 07/25/23
Page 6 of 11
Once the evaporative system leak test is complete, check the DTCs and examine the vacuum value
results. Record the value shown in the row labeled MID: $3C, TID: $C4, and Scaling ID: $FE. This
value should be lower than -0.26 PSI.
Is DTC P2404 stored within the ECM?
NO – Proceed to STEP 7.
YES – Proceed to STEP 8.
STEP 7: Was the vacuum value result observed in STEP 6 found to be lower than -0.26 PSI?
YES – Proceed to STEP 11.
NO – Proceed to STEP 8.
STEP 8: Using SSM, perform the ELCM Pump Active Test for a period of 35 minutes or more. See
APPENDIX A for addition information regarding power supply.
Continued...
Bulletin Number: 09-109-23; Date: 07/25/23
Page 7 of 11
Once the ELCM Pump Active Test has been performed for a period of 35 minutes or more, repeat the
Evaporative System Leak Test outlined in STEP 6. Check the DTCs and the vacuum value results.
Is DTC P2404 stored within the ECM?
		
NO – Proceed to STEP 9.
		
YES – Proceed to STEP 10.
STEP 9: Was the vacuum value result observed during the second Evaporative System Leak Test
found to be lower than -0.26 PSI?
YES – Proceed to STEP 11.
NO – Proceed to STEP 10.
STEP 10: Replace the Evaporate Leak Check Module and repeat the Evaporative System Leak Test
outlined in STEP 6. Check the DTCs and the vacuum value results.
Is DTC P2404 stored within the ECM?
		
NO – Proceed to STEP 11.
		 YES – Contact Subaru Techline with ability to provide SSM data and the testing results 		
attained using this bulletin.
STEP 11: Reprogram the ECM following the normal FlashWrite procedure. See APPENDIX A for
addition information regarding power supply.
WARRANTY / CLAIM INFORMATION:
For vehicles within the Basic New Car Limited, an applicable Emission Warranty period or covered
by an active Subaru Added Security Classic or Gold plan, this repair may be submitted using
thefollowing claim information:
Labor Description
Labor Operation #
Labor Time
ECM REPROGRAMMING & DRAIN TUBE CLEAN / EVAP TESTING
A455-223
1.0H
LEAK CHECK MODULE R&R AND ECM REPROGRAMMING
A455-244
1.9H
Fail Code
UPG-48
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 claim
specific data field during claim submission.
NOTE: The 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.
Continued...
Bulletin Number: 09-109-23; Date: 07/25/23
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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.
Continued...
Bulletin Number: 09-109-23; Date: 07/25/23
Page 9 of 11
APPENDIX A
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.
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.
Continued...
Bulletin Number: 09-109-23; Date: 07/25/23
Page 10 of 11
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.
Bulletin Number: 09-109-23; Date: 07/25/23
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