P0890 TCM Power Relay Sense Circuit P05A0 Active Grille Air Shutter “A” Stuck on Low – 2015-2019 Subaru Legacy & Outback

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Bulletin Number: 09-87-22; Date: 04/26/22 Page 1 of 6 SERVICE BULLETIN 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. 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. NUMBER: 09-87-22 DATE: 04/26/22 APPLICABILITY: 2015-19MY Legacy & Outback SUBJECT: P0890 TCM Power Relay Sense Circuit P05A0 Active Grille Air Shutter “A” Stuck on Low INTRODUCTION: This bulletin announces availability of new reprograming files for the Engine Control Module (ECM). These files have been developed to address concerns of the starter motor not operating and/ or illumination of the engine warning lamp. These concerns may occur under any of the two driving scenarios outlined below. It is IMPORTANT to fully review the details below to accurately confirm the concern and perform the reprogramming procedure when necessary. DESCRIPTIONS OF CONCERN: Scenario A: While attempting a restart after a short drive cycle in low ambient temperatures (less than 0 Degrees Celsius / 32 Degrees Fahrenheit), the starter motor may not operate. DTC P0890 (TCM Power Relay Sense Circuit Low) will likely be stored in the ECM under this condition. Condensed moisture in the ignition relay can cause the contact points to freeze under these conditions. The new logic enhances the relay self-shutdown program, eliminating the possibility of frozen relay contacts. Scenario B: DTC P05A0 (Active Grille Air Shutter “A” Stuck On) may be stored in the ECM when the vehicle is driven in low ambient temperatures (less than 0 Degrees Celsius / 32 Degrees Fahrenheit) and/or harsh weather including snow and freezing rain. This is caused by an inaccurate freezing estimation of the Active Grille Shutter (AGS) by the ECM. The new logic optimizes the freezing estimation program within the ECM. NOTE: Reprogram the ECM ONLY after confirming any of the scenarios as described above are present. SERVICE PROCEDURE / INFORMATION: REMINDER: Customer satisfaction and retention starts with performing quality repairs. • Reprogram the ECM following the normal FlashWrite procedure. • See the information below for PAK file applicability. ATTENTION: GENERAL MANAGER q PARTS MANAGER q CLAIMS PERSONNEL q SERVICE MANAGER q IMPORTANT – All Service Personnel Should Read and Initial in the boxes provided, right. ©2022 Subaru of America, Inc. All rights reserved. Bulletin Number: 09-87-22; Date: 04/26/22 Page 2 of 6 Continued… 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 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 GR8- 1100 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 (Flooded, EFB, 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 SDI 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 SDI 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 14V 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. 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 GR8- 1100 and their Power Supply Mode feature have been tested and approved by SOA. Bulletin Number: 09-87-22; Date: 04/26/22 Page 3 of 6 Continued… PAK FILE APPLICABILITY: MY Model Specification Old CID # File Name Decryption Keyword New CID # 2015 Legacy & Outback 2.5L NA, CVT EB4F300B 22765AF35J.pak 545BE3B9 EB4GH00B EB4G100B EB4G300B EB4G400B EB4G401B EB4G600B EB4GA00B EB4GA01B EB4GA02B EB4GA03B EB4GE00B EB4F300C 22765AF36J.pak EBD0C9F8 EB4GH00C EB4G100C EB4G300C EB4G400C EB4G401C EB4G600C EB4GA00C EB4GA01C EB4GA02C EB4GA03C EB4GE00C EB4G700C 22765AK16G.pak 81549BFC EB4GH00c EB4GA00C EB4GA01c EB4GA02c EB4GA03c EB4GE00c 3.6L NA, CVT DB4F300D 22765AF45G.pak 7A3AB447 DB4GH00D DB4F301D DB4G300D DB4G301D DB4G3Z1D DB4GA00D DB4GA01D DB4GE00D DB4GG00D Bulletin Number: 09-87-22; Date: 04/26/22 Page 4 of 6 Continued… MY Model Specification Old CID # File Name Decryption Keyword New CID # 2016 Legacy & Outback 2.5L NA, CVT EB4I200C 22765AJ14F.pak 4BB01297 EB4I350C EB4I310C EB4I311C EB4I312C EB4I313C EB4I31ZC EB4I330C EB4I200B 22765AJ15F.pak 607512EB EB4I350B EB4I310B EB4I311B EB4I312B EB4I313B EB4I31ZB EB4I330B 3.6L NA, CVT DB4I100D 22765AJ17E.pak 254F5AC8 DB4I350D DB4I310D DB4I311D DB4I330D DB4I340D Bulletin Number: 09-87-22; Date: 04/26/22 Page 5 of 6 Continued… MY Model Specification Old CID # File Name Decryption Keyword New CID # 2017 Legacy & Outback 2.5L NA, CVT EB4I500C 22765AK48G.pak 57166248 EB4I550C EB4I50ZC EB4I50YC EB4I501C EB4I502C EB4I503C EB4I504C EB4I50XC EB4I530C EB4I500B 22765AK50G.pak 819BE7E1 EB4I550B EB4I501B EB4I50ZB EB4I502B EB4I503B EB4I504B EB4I505B EB4I50YB EB4I530B 3.6L NA, CVT DB4I500D 22765AK31F.pak 6D87DE45 DB4I550D DB4I50ZD DB4I501D DB4I502D DB4I530D DB4I540D MY Model Specification Old CID # File Name Decryption Keyword New CID # 2018 Legacy & Outback 2.5L NA, CVT EB4P000C 22765AK85D.pak ED0B7C17 EB4T700C EB4P001C EB4S100C EB4S101C EB4S10ZC EB4T400C 3.6L NA, CVT DB4P000D 22765AK89D.pak A26C95FA DB4T700D DB4P001D DB4T400D DB4T600D Bulletin Number: 09-87-22; Date: 04/26/22 Page 6 of 6 MY Model Specification Old CID # File Name Decryption Keyword New CID # 2019 Legacy & Outback 2.5L NA, CVT EB4V000C EB4V00ZC 22765AN06C.pak 03B99837 EB4V900C EB4V600C 3.6L NA, CVT DB4V000D DB4V600D 22765AN11D.pak 03BC002D DB4V900D DB4V800D 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 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.

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