P0890 TCM Power Relay Sense Circuit P05A0 Active Grille Air Shutter “A” Stuck on Low DTC P015A & P015B / Delayed O2 Sensor Response – 2017-2022 Subaru

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Bulletin Number: 09-90-22R; Revised: 01/24/23 Page 1 of 9 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: 09-90-22R DATE: 05/20/22 REVISED: 01/24/23 APPLICABILITY: 2017-22MY Impreza 2018-22MY Crosstrek SUBJECT: P0890 TCM Power Relay Sense Circuit P05A0 Active Grille Air Shutter “A” Stuck on Low DTC P015A & P015B / Delayed O2 Sensor Response 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. This concern may occur under any of the four 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. PRODUCTION CHANGE INFORMATION: This new logic was incorporated into vehicle production as per the the table below. Model Starting VIN Impreza (4 Door) N3607758 Impreza (5 Door) N1722257 Crosstrek N9249886 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. 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: 09-90-22R; Revised: 01/24/23 Page 2 of 9 Continued… 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. Scenario C: P015A (A/F /02 Sensor Delayed Response – Rich to Lean Bank 1 Sensor 1) & P015B (A/F /02 Sensor Delayed Response – Rich to Lean Bank 1 Sensor 1) may set when stabbing acceleration (ON then quickly OFF the accelerator) and similar braking are performed repeatedly such as in stop and go driving while the engine is warming up. Scenario D: A hesitation and/or lack or power may be felt while operating the vehicle with an engine speed of 1500-3500rpm. 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. 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. Bulletin Number: 09-90-22R; Revised: 01/24/23 Page 3 of 9 Continued… • 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: 09-90-22R; Revised: 01/24/23 Page 4 of 9 Continued… PAK FILE APPLICABILITY: MY Model Specification Old CID # File Name Decryption Keyword New CID # 2017 Impreza 2.0L NA, 5MT AGS 22765AJ59A 22765AU28A.pak BD9CAD75 XH3J2G0C 22765AJ59B 22765AJ59C 22765AJ59D 22765AJ59E 22765AJ59F 22765AJ59G 22765AJ59H 22765AJ59J 22765AJ59K 2.0L NA, CVT AGS 22765AJ60A 22765AU29A.pak FE01CFEB XH3J2G0D 22765AJ60B 22765AJ60C 22765AJ60D 22765AJ60E 22765AJ60F 22765AJ60G 22765AJ60H 22765AJ60I 22765AJ60J 22765AJ60K 2.0L NA, 5MT 22765AJ61A 22765AU30A.pak C3C6AC44 XH3J2G0A 22765AJ61B 22765AJ61C 22765AJ61D 22765AJ61E 22765AJ61F 22765AJ61G 22765AJ61H 22765AJ61J 22765AJ61K 2.0L NA, CVT 22765AL71A 22765AU31A.pak 182F9B0B XH3J2G0B 22765AL71B 22765AL71C 22765AL71D 22765AL71E 22765AL71F 22765AL71G 22765AL71H 22765AL71J 22765AL71K Bulletin Number: 09-90-22R; Revised: 01/24/23 Page 5 of 9 Continued… MY Model Specification Old CID # File Name Decryption Keyword New CID # 2018 Impreza 2.5L NA, CVT AGS 22765AM28A 22765AM28J.pak B8D823C7 XH3JD00D 22765AM28B 22765AM28C 22765AM28D 22765AM28E 22765AM28F 22765AM28G 22765AM28H Crosstrek 2.0L NA, 6MT 22765AJ610 22765AJ618.pak F9F53E35 XH3J2G0E 22765AJ611 22765AJ612 22765AJ613 22765AJ614 22765AJ615 22765AJ616 22765AJ617 2.0L NA, CVT 22765AJ620 22765AJ628.pak B9308D26 XH3J2G0F 22765AJ621 22765AJ622 22765AJ623 22765AJ624 22765AJ625 22765AJ626 22765AJ627 Bulletin Number: 09-90-22R; Revised: 01/24/23 Page 6 of 9 MY Model Specification Old CID # File Name Decryption Keyword New CID # 2019 Impreza 2.0L NA, 5MT AGS 22765AM64A 22765AM64G.pak 6E8A55B5 XH3NA00C 22765AM64B 22765AM64C 22765AM64D 22765AM64E 22765AM64F 2.0L NA, 5MT 22765AM65A 22765AM65G.pak FAA8D023 XH3NA00A 22765AM65B 22765AM65C 22765AM65D 22765AM65E 22765AM65F 2.0L NA, CVT AGS 22765AM66A 22765AM66G.pak FC067661 XH3NA00D 22765AM66B 22765AM66C 22765AM66D 22765AM66E 22765AM66F 2.0L NA, CVT 22765AM67A 22765AM67G.pak 5CC20BED XH3NA00B 22765AM67B 22765AM67C 22765AM67D 22765AM67E 22765AM67F Crosstrek 2.0L NA, 6MT 22765AM810 22765AM816.pak D2566269 XH3NA00E 22765AM811 22765AM812 22765AM813 22765AM814 22765AM815 2.0L NA, CVT 22765AM820 22765AM826.pak 150AAA5D XH3NA00F 22765AM821 22765AM822 22765AM823 22765AM824 22765AM825 Bulletin Number: 09-90-22R; Revised: 01/24/23 Page 7 of 9 Continued… MY Model Specification Old CID # File Name Decryption Keyword New CID # 2020 Crosstrek 2.0L NA, 6MT 22765AN930 22765AN931 22765AN933.pak FDD0BD32 XE1M500E00G 22765AN932 2.0L NA, CVT 22765AN950 22765AN952.pak 18F232B0 XE1M500F00G 22765AN951 Impreza 2.0L NA, 5MT AGS 22765AP11A 22765AP11B 22765AP11D.pak 7D36F368 XE1M500C00G 22765AP11C 2.0L NA, 5MT 22765AP12A 22765AP12B 22765AP12D.pak D7A1DB9B XE1M500A00G 22765AP12C 2.0L NA, CVT AGS 22765AP13A 22765AP13B 22765AP13D.pak D2C975EC XE1M500D00G 22765AP13C 2.0L NA, CVT 22765AP14A 22765AP14B 22765AP14D.pak 7B3A4703 XE1M500B00G 22765AP14C MY Model Specification Old CID # File Name Decryption Keyword New CID # 2021 Impreza 2.0 NA, MT, AGS XE1P100C00G XE1P10ZC00G 22765AP84C.pak 82CE2831 XE1P500C00G XE1P101C00G 2.0 NA, MT XE1P100A00G XE1P10ZA00G 22765AP85C.pak 93FBB29A XE1P500A00G XE1P101A00G 2.0 NA, CVT, AGS XE1P100D00G 22765AP86C.pak A8F10D31 XE1P500D00G XE1P400D00G 2.0 NA, CVT XE1P100B00G 22765AP87C.pak BE951B1F XE1P500B00G XE1P400B00G 2021 cont. Crosstrek 2.0 NA, 6MT XE1P100E00G XE1P10ZE00G 22765AP922.pak 7BE0917B XE1P500E00G XE1P101E00G 2.0 NA, CVT XE1P100F00G XE1P101F00G 22765AP932.pak CF1813CB XE1P500F00G XE1P10ZF00G 2.5 NA,CVT XE1P010G00G 22765AP811.pak F3081B11 XE1P500G00G Bulletin Number: 09-90-22R; Revised: 01/24/23 Page 8 of 9 MY Model Specification Old CID # File Name Decryption Keyword New CID # 2022 Impreza 2.0 NA, 5MT, AGS XE1R010C00G 22765AS27B.pak A06D93F0 XE1R200C00G XE1R011C00G 2.0 NA, 5MT XE1R010A00G 22765AS28B.pak E7D2B96A XE1R200A00G XE1R011A00G 2.0 NA, CVT, AGS XE1R010D00G 22765AS29B.pak 2E99EA2B XE1R200D00G XE1R100D00G 2.0 NA, CVT XE1R010B00G 22765AS30B.pak 5E252BEA XE1R200B00G XE1R100B00G Crosstrek 2.0 NA, 6MT XE1R010E00G 22765AS311.pak 2B358510 XE1R200E00G XE1R011E00G 2.0 NA, CVT XE1R010F00G 22765AS321.pak 8F4C1AE5 XE1R200F00G 2.5 NA, CVT XE1R010G00G 22765AS341.pak 93449D15 XE1R200G00G 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 newly- installed 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 Flash- Write. If a newer CID is shown as available in FlashWrite, reprogram using that file. Continued… Bulletin Number: 09-90-22R; Revised: 01/24/23 Page 9 of 9 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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