NHTSA ID Number: 10240114
Manufacturer Communication Number: 09-107-23
TSB/Document Date: 2023-08-02
Summary
This bulletin announces diagnostic procedures and availability of new Engine Control Module (ECM) reprogramming files to address DTC P2404 (Evap System Leak Detection Pump Sense Circuit Range/Performance) detection.
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:
SUBJECT:
2019-23MY Ascent
NUMBER: 09-107-23
DATE: 07/18/23
DTC P2404 / Reprogramming Files
INTRODUCTION:
This bulletin the announces diagnostic procedures and availability of new Engine Control Module
(ECM) reprogramming files to address DTC P2404 (Evap System Leak Detection Pump Sense
Circuit Range/Performance) detection. In rare cases, the internal pump for the Evaporative Leak
Check Module (ELCM) system can seize temporarily. The new files contain enhanced logic to
prevent the ELCM pump from seizing. If P2404 is found in the fault memory, follow the diagnostic
procedures outlined below.
PFC FILE INFORMATION:
Model
MY
File Name
Old Part Number
New CID #
Ascent
23
22765AS631.pfc
22765AS630
LHBK240Y00G
Detailed information regarding the SSM5-R reprogramming procedures can be found in
TSB 14-28-21.
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: 09-107-23; Date: 07/18/23
Page 1 of 11
PAK FILE APPLICABILITY:
Model
MY
File Name
Old Part Number
Decryption Keyword
New CID #
0DDE2284
LT8DB00A
D0E053B2
LT8F600C00G
B681D094
LT8H600D00G
C3D40F22
LT8J500F00G
22765AL730
22765AL731
22765AL732
22765AL733
19
22765AL739.pak
22765AL734
22765AL735
22765AL736
22765AL737
22765AL738
22765AN500
22765AN501
20
22765AN506.pak
22765AN502
22765AN503
22765AN504
Ascent
22765AN505
22765AP820
21
22765AP824.pak
22765AP821
22765AP822
22765AP823
22765AS000
22
22765AS003.pak
22765AS001
22765AS002
These reprogramming files have been included in the April 2023 SSM software update.
Continued...
Bulletin Number: 09-107-23; Date: 07/18/23
Page 2 of 11
SERVICE PROCEDURE FLOWCHART:
Perform reprogramming outlined in STEP 11.
Perform diagnosis following the
applicable Service Manual. Once
repaired, perform the reprogramming
procedure outlined in STEP 11.
Continued...
Bulletin Number: 09-107-23; Date: 07/18/23
Page 3 of 11
Continued...
Bulletin Number: 09-107-23; Date: 07/18/23
Page 4 of 11
Contact Subaru Techline with ability to
provide SSM data and the testing results
attained using this bulletin.
SERVICE PROCEDURE / INFORMATION:
STEP 1: Using Subaru Select Monitor (SSM), check for diagnostic trouble codes. Confirm P2404 is
stored and proceed to the next step.
NOTE: Always save SSM data and record the results of the following tests.
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 of the DTC(s) following the procedures outlined
in the applicable Service Manual. Once repaired, perform the
reprogramming procedures outlined in STEP 11.
Continued...
Bulletin Number: 09-107-23; Date: 07/18/23
Page 5 of 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.
STEP 4: CAREFULLY Raise the vehicle and locate the ELCM located behind the fuel tank.
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.
Continued...
Bulletin Number: 09-107-23; Date: 07/18/23
Page 6 of 11
STEP 6: Connect the vehicle to a recommended power supply. See APPENDIX A for additional
information regarding power supply. Using SSM, perform the Evaporative System Leak Test. Collect
and save all data.
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 – Repeat the Evaporative System Leak Test (outlined in STEP 6) then proceed to STEP 9.
Continued...
Bulletin Number: 09-107-23; Date: 07/18/23
Page 7 of 11
STEP 8: Using SSM, perform the ELCM Pump Active Test for a period of 35 minutes or more. See
APPENDIX A for additional information regarding power supply.
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 7.
YES – Proceed to STEP 8.
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 recommendations.
Continued...
Bulletin Number: 09-107-23; Date: 07/18/23
Page 8 of 11
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 the
following claim information:
Labor Description
Labor Operation #
Labor Time
ECM REPROGRAMMING & DRAIN TUBE CLEAN / EVAP TESTING
A455-223
1.0H
Fail Code
UPG-48
LEAK CHECK MODULE R&R AND ECM REPROGRAMMING
A455-244
1.9H
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.
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: 09-107-23; Date: 07/18/23
Page 9 of 11
APPENDIX A
Subaru of America, Inc. (SOA) highly recommends connecting 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: 09-107-23; Date: 07/18/23
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: 09-107-23; Date: 07/18/23
Page 11 of 11
- 3X Stronger than the leading full synthetic*
- 10X Better high stress performance**
- 20,000 miles between oil changes***
- Viscosity breakdown as measured in Kurt Orbahn test on 5W...
- As measured in Seq IX test under high load/torque conditions...
- Phosphorus Replacement Technology to help extend the life of...
- Reduces leaks, oil burnoff and power robbing deposits
- 15,000 miles between oil changes*
- Meets or exceeds the following specifications: API SP/SN...
- Or one year, whichever comes first
If the PDF is very large, it may not load in the preview below.
Some older TSBs had multiple PDFs — visit the NHTSA Website to view all PDFs.
If the TSB PDF does not show, download or view it on the NHTSA Website.
Click on the (+) Plus Sign
Then Click on Associated Document(s)
Search NHTSA Database for Recalls
Search NHTSA Database for Vehicle Investigations
View Latest Vehicle Investigations
Search NHTSA Database for Vehicle Complaints
View Latest Vehicle Complaints
TSB/Document ID: 09-107-23
Replacement Service Bulletin Number:
MFR Communication Date: 2023-07-18
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
- [Notice] When you receive a used device, it may be a customer return resold by Amazon without inspection. You can exchange it for a new one through Amazon. As this situation is unavoidable, we sincerely apologize. For any issues, contacting us via Amazon's "Messages" is the best way. THINKSCAN 689BT Bidirectional Scan Tool Can Be Used Immediately After It is Turned On, Without Complicated Registration Process, Which is More Convenient & Quick.
- Full Bi-Directional Control & 3000+ Active Tests: Take control and test components like actuators, fuel injectors, relays, and cooling fans in real time. You’ll quickly see if the problem is in the part itself or the control module — saving you hours of guesswork and frustrating trial-and-error.
- Advanced ECU Coding Capabilities: Handle module matching and hidden feature activation with confidence. When you replace an ECU or want to customize settings, this obd2 scanner diagnostic bi directional tool gives you the professional-level capabilities you need without the dealership price tag.
- 34+ Useful Reset and Maintenance Functions: Complete everyday service tasks smoothly with a wide range of helpful reset and maintenance functions. Whether you’re keeping up with regular upkeep or tackling a specific job, this scanner makes maintenance simpler and less stressful for both DIYers and pros.
- Comprehensive Full System Diagnostics: Diagnose every major system — Engine, Transmission, ABS, SRS, TPMS, and more — all in one place. Finally stop wondering if you’re missing something important; get the full picture and clear codes with ease.
- Top Reasons to Choose the D7S OBD2 Scanner: XTOOL D7S car scan tool, an upgrade of XTOOL D7, offers comprehensive features for automotive technicians, workshops, and DIY enthusiasts 1. Upgraded Hardware: 2+64GB memory, rear camera, intuitive interface, foldable bracket 2. Complete Diagnostics: FCA
Autoauth, OE-level all system scan, 39+ maintenance services, 4K+ bidirectional, CANFD/DoIP protocol 3. Advanced Capabilities: ECU coding, PMI functions 4. Wide Compatibility: Support 10,000+ models, covering 99% vehicle brands 5. Multi-language: Available in 22+ languages, No IP Restrictions 6. 3-Year Updates: Save 300 bucks on software updates for the latest features and optimizations - 2026 Upgraded D7S Car Scanner Features: The newly 2026 D7S V2.0 scanner for car brings exciting features for advanced vehicle diagnostics and enhanced user experience 1. FCA AutoAuth: Now supports FCA SGW module for Chrysler, for Jeep, for Dodge (2018+), for Fiat (2017+), enabling faster vehicle communication without gateway restrictions 2. PMI (Offline ECU Programming): Allows for Ford, for Lincoln, and for Mazda ECU programming for new modules 3. Optimized Diagnostic Report 2.0: Personalized reports with logos and customer info for auto shops. Note: Compatibility varies by cars, please check before order
- Cost-effective ECU Coding Scan Tool for Specific Brands: Enhance your vehicle's performance with XTOOL D7S! This obd2 scanner all systems bidirectional offers advanced capabilities at an affordable price, supports online for BMW, for Benz and offline for BENZ, for MIT, along with PMI functions for Ford, for Mazda, and for Lincoln. Ideal for technicians and DIY enthusiasts, this automotive scanner diagnostic tool optimizes vehicle performance and enhances the driving experience. Note: Not for all cars and modules, please send car VIN to check the compatibility before purchase
- OE All System Diagnostic & 8 Pids Graphing: XTOOL D7S is a comprehensive all system bi directional obd2 scanner that delivers dealer-level diagnostics, completely controlling over your vehicle’s performance and health. This automotive scan tool can read and clear DTCs, view live data and ECU information, retrieve freeze frames, and perform active tests and full obd2 functions. This bi-directional scan tool can can identify your vehicle's make, model, and year information with just one click and show up to 8 PIDs live data with options for CSV viewing, playback, and recording for in-depth analysis. It is easy-to-use for both professionals and beginners, helping pinpoint issues efficiently
- 3 Years Software Update, Value for Money: With 3 years of software updates and 22+ languages(no IP restrictions), XTOOL D7S auto scanner code scanner ensures ongoing compatibility for the latest car models and improved diagnostic functions. This all system vehicle diagnostic scanner comes with a 30-day return policy and a 24-month repair for dependable performance. XTOOL are dedicated to your satisfaction, so enjoy seamless support and lifetime expert assistance. Should you encounter any issues or concerns, don’t hesitate to reach out XTOOL. D7S with newest update with 22 languages freely transfer without authorization, check details from setting-language or from XTOOL
- 【✅Compared to BOSSCOMM IF742, IF745 Offers Full-System Diagnostics】The BOSSCOMM IF745 car diagnostic scanner is an upgraded model of IF742. In addition to supporting all OBD2 Code Reader functions and 6 reset options (ABS/EPB/SAS/BMS/Oil/Throttle), it expands diagnostics from 4 systems (Check Engine/ABS/SRS/Transmission) to vehicle All systems, including Steering, Suspension, and Body Electronics. This provides deeper, more comprehensive diagnostic capabilities.
- 【✨10 OBD2 Functions】The BOSSCOMM IF745 scan tool’s DTC Lookup instantly translates fault codes into user-friendly explanations, its I/M Readiness feature streamlines emissions testing with a single tap, and Freeze Frame lets you pinpoint the exact moment of a fault for in-depth root-cause diagnosis. Combined with a live data dashboard and advanced diagnostics (O2S, OBMon, EVAP), it delivers comprehensive insights for confident troubleshooting.
- 【✨Deep Diagnostics for All Vehicle System Modules】Beyond code reading/clearing and ECU information retrieval, our all-in-one data stream feature lets you inspect all current fault codes and their locations across the vehicle’s systems. This vehicle code reader helps you turn off dashboard warning lights and perform a comprehensive self-check of your car at home—no more back-and-forth trips to the repair shop or hefty inspection fees.
- 【✨6 Essential Resets: ABS Bleeding, Oil, EPB, SAS, Throttle, BMS】The BOSSCOMM IF745 obd2 scanner diagnostic tool swiftly purges air from brake lines to restore braking sensitivity, fine-tunes maintenance cycles to eliminate false alerts, resolves parking brake issues with one-click control, recalibrates steering sensors for stability, optimizes engine idling/acceleration for smoother performance, and deeply resets battery systems to extend lifespan and range via precise parameter adjustments.❗NOTE: Does NOT support bidirectional control, coding, or programming.
- 【✨10,000+ Car Models, AutoVIN, 13 Languages】The BOSSCOMM IF745 vehicle scanner diagnostic tool covers 73+ global car brands and offers support in 13 languages, making it perfect for DIYers, auto mechanics, or as a thoughtful gift. With a single-click AutoVIN feature, it instantly retrieves vehicle serial numbers, streamlining diagnostics for users globally. This adaptable tool balances user-friendliness with precision, catering to both personal and professional requirements.✅Unsure about compatibility? Compatibility will vary on vehicles' model and year, pls reach us via 📧 [email protected] 📧 before purchase.
This product presentation was made with AAWP plugin.