2021 Subaru Outback Technical Service Bulletins

488 technical service bulletins (TSBs) are on record for the 2021 Subaru Outback. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 11029347Feb 25, 2026Electrical system. This Service Information Bulletin was developed to provide interim guidance for 2026 model year vehicles exhibiting DTC B2A20 with gen 4 Telematics.
• 11029329Feb 6, 2026Electrical system. This bulletin announces the new procedure and Warranty Fail Code for FirstTime air conditioning (A/C) performance concerns possibly resulting from an undetected A/C refrigerant leak.
• 11029325Feb 5, 2026Seats, Air bags, Electrical system. This announcement provides updates for WRA-24 ODS Sensor Replacement.
• 11027986Jan 15, 2026Electrical system. This Subaru service and technical support line newsletter provides information on the next phase of TechShare.
• 11027982Jan 12, 2026Engine, Electrical system. This Bulletin provides the diagnostic procedure for the STARLINK® Remote Engine Start (RES).
• 11027981Jan 12, 2026Other or unknown. This announcement has been created to address difficulties with software updates on Subaru Select Monitors with DST-010 interface firmware has been updated.
• 11027978Jan 8, 2026Engine, Fuel system. This bulletin announces the design change made to the high-pressure fuel pump developed to prevent DTC P0087 (Fuel Rail/System Pressure – Too Low Bank 1).
• 11027977Jan 8, 2026Electrical system. This Service Information Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs on the vehicles listed.
• 11027103Dec 23, 2025Engine, Electrical system. This Service Information Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs on models listed.
• 11027092Dec 16, 2025Suspension. This Bulletin announces a design change to the rear stabilizer bar bushing to address knocking sounds as a result of excessive clearance between the stabilizer bar and the bushing. The updated bushing features enhanced rubber material that is more elastic in cold climates.
• 11027090Dec 12, 2025Engine, Fuel system. This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components (e.g. intake valves and / or manifold, and combustion chambers).
• 11027083Dec 8, 2025Electrical system, Engine. This Service Information Bulletin provides the Service Manual Correction to the diagnostic procedure for DTC B2A16 (Immobilizer Key Collation Diagnosis).
• 11027081Dec 8, 2025Electrical system, Engine, Fuel system. This bulletin announces the diagnostic procedures to be used when DTCs P2096 (POST CATALYST FUEL TRIM SYSTEM TOO LEAN BANK 1) and P2097 (POST CATALYST FUEL TRIM SYSTEM TOO RICH BANK 1) are detected by the Engine Control Module (ECM).
• 11027076Dec 8, 2025Suspension. This bulletin announces availability of new front wheel hub assemblies incorporating bearing surfaces having increased resistance to imperfections resulting from shock loads.
• 11027073Dec 2, 2025Electrical system. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
• 11025796Nov 20, 2025Other or unknown. Subaru service article locator.
• 11025791Nov 20, 2025Body and structure. This Bulletin announces a new diagnostic procedure for addressing NVH (Noise, Vibration, and Harshness) originating from the roof area.
• 11025790Nov 20, 2025Engine, Electrical system. This bulletin announces the diagnostic procedures to be used when DTCs P2096 (POST CATALYST FUEL TRIM SYSTEM TOO LEAN BANK 1) and P2097 (POST CATALYST FUEL TRIM SYSTEM TOO RICH BANK 1) are detected by the Engine Control Module (ECM).
• 11025789Nov 20, 2025Other or unknown. Subaru service article locator.
• 11025788Nov 18, 2025Seats. This bulletin announces a design change to the driver front lower seat cushion cover, addressing cases of tearing at the bottom corner of the cushion in vehicles equipped with a thigh extension.
• 11025781Nov 4, 2025Electrical system. This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified.
• 11024867Oct 29, 2025Other or unknown. This bulletin provides information on the load carrying capacity reduced label when a port-installed or retailer-installed accessory exeeds 1.5 percent of the GVWR or 100 pounds, which ever is lower.
• 11024869Oct 28, 2025Electrical system. This Service Information Bulletin outlines a systematic procedure for diagnosing parasitic draw (dark/standby current) in vehicles experiencing battery drain when the ignition is off, leading to no-start conditions or frequent jump-starts.
• 11024865Oct 28, 2025Electrical system, Transmission and drivetrain. This bulletin provides guidance when diagnosing chain slip, judder, shudder, and hesitation concerns on the TR690 model CVT transmissions used in the models listed.
• 11024864Oct 28, 2025Electrical system, Engine. This bulletin announces the diagnostic procedures to be followed when encountering cases of the Remote Engine Start (RES) system being the only non-functioning feature with telematics.
• 11024863Oct 28, 2025Other or unknown. Subaru tech tips newsletter article locator.
• 11024859Oct 28, 2025Other or unknown. Subaru tech tips newsletter article locator.
• 11024858Oct 23, 2025Electrical system. This Bulletin outlines a comprehensive update to the dark current/parasitic draw diagnosis & testing procedures.
• 11024857Oct 23, 2025Electrical system. This Bulletin provides details on a new formal testing, charging, and tracking procedure for all 12-volt batteries in new vehicle inventory.
• 11024856Oct 23, 2025Electrical system, Seats. This bulletin announces the availability of new seat ventilation blower units which have been redesigned to address some cases of a vibration-type sound emitting from the blower unit during seat ventilation operation.
• 11024850Oct 10, 2025Electrical system. This bulletin provides instruction for use of a new reprogramming procedure to optimize the Denso Gen 4 Audio and Navigation system utilized in the models listed.
• 11023536Sep 30, 2025Engine, Forward collision avoidance. In the interest of customer satisfaction Subaru of America, Inc. (SOA) is extending the New Car Limited Warranty coverage in the models listed. The extension will address instances of “phantom braking” or the EyeSight/RAB systems causing unnecessary stoppage/slowing of the vehicle.
• 11023524Sep 30, 2025Electrical system. This bulletin addresses cases when attempting to complete the STARLINK Telematics subscription process, an Error Code 202 and / or 204 may occur preventing the process from completing successfully.
• 11023508Sep 30, 2025Electrical system, Seats. This bulletin announces the availability of new seat ventilation blower units. This update is set to address some cases of a vibration-type sound emitting from the blower unit during seat ventilation operation.
• 11023519Sep 29, 2025Electrical system. This OTA is an software update to provide audio improvements for the models listed.
• 11023505Sep 5, 2025Electrical system. This bulletin announces the new procedure and Warranty Fail Code for FirstTime air conditioning (A/C) performance concerns possibly resulting from an undetected A/C refrigerant leak.
• 11023504Sep 4, 2025Transmission and drivetrain. Subaru of America, Inc. (Subaru) has initiated this safety and emissions Recall for certain 2019 - 2020 model year Ascent vehicles, 2020-2021 model year turbo Legacy vehicles, and 2020-2021 model year turbo Outback vehicles in which the Continuously Variable Transmission (CVT) chain may slip and/or break.
• 11023500Sep 3, 2025Electrical system. This Bulletin provides details on a new formal testing, charging, and tracking procedure for all 12-volt batteries in new vehicle inventory wjhich must be tested and reported every 30 days.
• 11023498Sep 2, 2025Transmission and drivetrain. This Bulletin announces the release of a new diagnostic assistance application for TR690 CVT-equipped vehicles.
• 11022331Aug 26, 2025Electrical system. This Bulletin provides helpful procedures and best practices to utilize when customers present with concerns relating to the operation of their Gen 2/Gen 3 Telematics system equipped Subaru.
• 11022316Aug 26, 2025Electrical system. In the interest of customer satisfaction, Subaru of America, Inc. (SOA) is extending the New Car Limited Warranty coverage for the CP1 & Gen 3.1 Head Unit used in the listed models and model years to (8) eight years / 150,000 miles to cover certain qualifying repairs to the infotainment audio system.
• 11022319Aug 21, 2025Electrical system. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
• 11022313Aug 14, 2025Engine. This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components (e.g. intake valves and / or manifold, and combustion chambers).
• 11022309Aug 13, 2025Electrical system. Subaru of America, Inc. will release an OTA to perform a software update to the DCM. This is a preventive OTA.
• 11022305Aug 11, 2025Engine, Electrical system, Transmission and drivetrain. Subaru Service Technical Support Newsletter special edition.
• 11022304Aug 11, 2025Body and structure. This bulletin provides information on paint codes for vehicles in the 2026 line up.
• 11022302Aug 11, 2025Electrical system. This bulletin announces the availability of reprogramming files designed to improve the functionality of the Keyless Access Control Unit.
• 11022298Aug 7, 2025Seat belts. This Bulletin announces the availability of a new part Extender Belt. This is for customers who find it necessary to increase the length of their seat belt.
• 11021266Jul 29, 2025Electrical system. In the interest of customer satisfaction Subaru of America, Inc. (SOA) is extending the New Car Limited Warranty coverage in the models listed for the selected EyeSight & Reverse Automatic Braking (RAB) components.
• 11021265Jul 29, 2025Seats, Electrical system. This bulletin announces the availability of new seat ventilation blower units.

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