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.

• 11005608Jul 11, 2024Engine. This thermo control valve video contains information on the replacement of thermo control valve.
• 11005599Jul 9, 2024Other or unknown. This Bulletin provides SOA paint codes to help eliminate possible confusion for 2025 MY vehicles.
• 11005597Jul 8, 2024Electrical system. "This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified."
• 11005595Jul 8, 2024Other or unknown. This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.
• 11005594Jul 8, 2024Electrical system, Engine. This bulletin announces the availability of new reprogramming files for the Engine Control Module (ECM), to address concerns of the starter motor not operating.
• 11005593Jul 8, 2024Suspension. This Bulletin provides guidance for diagnosing a leaking front or rear suspension strut.
• 11005592Jul 8, 2024Engine, Electrical system. "This bulletin announces availability of new reprograming files for the Engine Control Module (ECM) developed to remedy the following DTCs: P0016, P0017, P0018, P0019, P0087."
• 11005588Jul 1, 2024Air bags, Electrical system. This bulletin announces the service manual correction when diagnosing occupant detection sensor failure.
• 11002728Jul 1, 2024Electrical system, Engine. This Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs.
• 11002730Jun 28, 2024Electrical system. This information announces reprograming file availability for Gen 4.5 Denso CP1.5 Audio and Navigation systems. Inprovement for CarPlay concerns with hands-free calls when the receiving party is not able to hear the caller.
• 11002725Jun 25, 2024Brakes. This bulletin provides diagnosis and procedure information to be applied when diagnosing potential fluid leaks on front and rear brake calipers. This information has been developed to reduce unnecessary brake caliper replacement.
• 11000832May 14, 2024Electrical system, Air bags, Seats. This Service Information Bulletin announces the Service Manual Correction when diagnosing the following DTCs; B1792: Front Right Occupant Detection Sensor Failure, B1793: Rear Left Occupant Detection Sensor Failure, B1794: Rear Right Occupant Detection Sensor Failure.
• 11000830May 14, 2024Electrical 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.
• 11000828May 14, 2024Electrical system, Engine. This bulletin announces the availability of new oxygen sensors developed to address the following Diagnostic Trouble Codes (DTCs); P0137 (O2 Sensor Circuit Low Voltage Bank 1 Sensor 2, P0138 (O2 Sensor Circuit High Voltage Bank 1 Sensor 2) P0140 (O2 Sensor Circuit No Activity Detected Bank 1 Sensor 2), and P0141 (O2 Sensor Heater Circuit Bank 1 Sensor 2).
• 11000820May 14, 2024Electrical system, Engine, Fuel system. 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.
• 11000816May 13, 2024Electrical system, Air bags, Seats. This is an update for owner notification for Safety recall WRA-24 to replace the ODS sensor replacement.
• 11000812May 3, 2024Fuel system, Engine. 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).
• 10254003Apr 30, 2024Electrical system, Equipment. 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.
• 10253993Apr 23, 2024Equipment, Transmission and drivetrain. This bulletin announces the design change made to the front drive axle shaft assemblies to address cases of a clicking/cracking-type sound heard when driving with the steering wheel in the fully locked (left or right) position.
• 10253953Apr 9, 2024Electrical system, Transmission and drivetrain, Engine cooling. This bulletin announces the availability of new reprogramming files developed to address cases of DTC P0890 (TCM Power Relay Sense Circuit Low) detected by the Engine Control Module (ECM).
• 10253930Apr 4, 2024Equipment, Engine cooling, Electrical system. This bulletin announces the extended warranty coverage for the Thermo Control valve (TCV) used the the models listed. The coverage will be extended to (15) fifteen years / 150,000 miles.
• 10253911Apr 4, 2024Seats, Air bags, Electrical system. WRA-24 Subaru Safety Recall Customer Information Sheet.
• 10253908Apr 4, 2024Air bags, Electrical system, Seats. Owner Contact and Vehicle Disclosure Form.
• 10253923Apr 3, 2024Seats, Electrical system, Air bags. Subaru of America, Inc. has determined that a safety recall for certain 2020-2022 model year Legacy and Outback vehicles to replace all (four) of the Occupant Detection System (ODS) sensors on the front passenger seat.
• 10253906Apr 1, 2024Electrical system, Air bags, Seats. WRA-24 ODS Sensor Replacement FAQs.
• 10253903Apr 1, 2024Engine cooling, Equipment. This bulletin announces availability of a new thermo control valve assembly. The new valve contains an enhanced stainless steel internal shaft for optimized durability along with advanced water proofing for the sensor portion.
• 10252553Mar 28, 2024Equipment, Electrical system. This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified.
• 10252549Mar 28, 2024Equipment, Electrical system. "This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified. This battery has higher capacity and is slightly larger in dimension."
• 10252534Mar 27, 2024Air bags, Electrical system, Equipment. Subaru of America, Inc. (Subaru) has initiated a safety recall for certain 2020-2022 model year Legacy and Outback vehicles to replace all (four) of the Occupant Detection System (ODS) sensors on the front passenger seat.
• 10252539Mar 26, 2024Equipment, Steering. This bulletin announces the design change made to the cowl panel. The change was made to address a small number of cases where the rubber sealing portion becomes separated.
• 10252531Mar 19, 2024Electrical system, Equipment. "This Bulletin provides insight in response to both customer and retailer feedback resulting from the use of OBD-II port connected devices. These devices are often employed by insurance companies to monitor driver activity for premium calculations, and can cause DTC B2A15, a red telematics MIL to illuminate, or recurring STARLINK notification to retailers and emails to customers. "
• 10252492Mar 19, 2024Equipment. This bulletin has been developed for use as a quick reference tool to aid in diagnosing operational concerns of the Gen 2 Telematics system’s remote access features.
• 10252491Mar 19, 2024Equipment, Electrical system. This bulletin addresses an error code 202 and or 204 when attempting to complete the STARLINK telematics subsription process.
• 10252490Mar 19, 2024Transmission and drivetrain. Subaru of America, Inc. (Subaru) has initiated a safety recall for certain 2021 model year Crosstrek vehicles, certain 2022 model year Forester, and certain 2021-2023 model year Legacy and Outback vehicles. This recall may contain an inhibitor switch that was manufactured with an insufficient weld between the switch stator and cover allowing water intrusion.
• 10251094Feb 5, 2024Electrical system, Engine cooling. This bulletin addresses rare cases of engine surg or jolting when the operator releases the accelerator from half-throttle.
• 10249608Jan 31, 2024Equipment. Subaru of America, Inc. (Subaru) has initiated a safety recall for certain 2021 model year Crosstrek vehicles, certain 2022 model year Forester, and certain 2021-2023 model year Legacy and Outback vehicles.
• 10249614Jan 22, 2024Fuel system. This bulletin announces design changes made to the fuel injector assembly in response to the DTCs listed.
• 10249606Jan 11, 2024Equipment, Electrical system. This Service Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
• 10249602Jan 8, 2024Transmission and drivetrain. This bulletin announces the design change made to the front drive axle shaft assemblies to address cases of a clicking/cracking-type sound heard when driving with the steering wheel in the fully locked (left or right) position.
• 10249591Jan 2, 2024Electrical system, Equipment. This Service Information Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs.
• 10248209Dec 21, 2023Electrical system. This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified.
• 10248199Dec 18, 2023Electrical system, Equipment. The following information announces reprogramming file availability and provides a software update installation procedure to optimize the new Gen 4 Denso CP1 Audio and Navigation head units utilized in the models listed.
• 10248196Dec 12, 2023Transmission and drivetrain, Equipment, Electrical system. Subaru of America, Inc. (Subaru) has initiated a safety recall for certain 2021 model year Crosstrek vehicles, certain 2022 model year Forester, and certain 2021-2023 model year Legacy and Outback vehicles.
• 10248191Dec 7, 2023Electrical system, Equipment. OTA version of RC 2304 Announcement
• 10248186Dec 4, 2023Equipment, Transmission and drivetrain, Electrical system. Inhibitor Switch Replacement tool will be automatically shipped to each retailer.
• 10246138Nov 27, 2023Engine cooling. This bulletin announces design changes made to the Exhaust Pipe Front (EPF) to address concerns of rattle-type or fluttering sounds coming from the undercarriage during acceleration caused by cracking in the EPF.
• 10246135Nov 27, 2023Engine cooling. This bulletin the announces availability of new reprogramming files for the Engine Control Module (ECM) developed to address cases of DTC P04AE (EVAP System Purge Control Valve “B” Performance / Stuck Open).
• 10246109Nov 15, 2023Electrical system. This Service Information Bulletin announces the revised break-in procedure for the A/C compressor.
• 10246101Nov 13, 2023Equipment, Electrical system. In the interest of customer satisfaction, Subaru of America, Inc. (Subaru) is initiating a Service Program for certain 2020-2021 model year Legacy and Outback vehicles to update the Cockpit Control Module (CCM) software to the latest version.
• 10246097Nov 10, 2023Electrical system, Equipment. The following information announces reprogramming file availability and provides a software update installation procedure to optimize the new Gen 4 Denso CP1 Audio and Navigation head units utilized in the models listed.

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