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Subaru · Known Issues

2022 Subaru Outback Problems: 15 Known Issues

2022 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026

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Issue summary

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2022 Subaru Outback has 15 documented known issues, with 2 rated critical. The most serious are Occupant Detection System (ODS) Sensor Failure — Front Passenger Airbag May Not Deploy (Recall 24V-227 / WRA-24) ($0-$0 repair) and Thermo Control Valve Failure Causing Check Engine Light and Overheating Risk ($900-$1,800 repair). Across all issues with published estimates, repair costs range from $20 to $3,500. DIY maintenance guides at au7o.io.

In This Article

  • Outback Safety/Recalls2
  • Outback Cooling1
  • Outback Electrical2
  • Outback Emissions2
  • Outback Body/Panels2
  • Outback HVAC1
  • Outback Interior1
  • Outback Engine1
  • Outback Drivetrain1
  • Outback Suspension1
  • Outback Brakes1
  • Recalls7
  • FAQ
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In This Article

  • Safety/Recalls2
  • Cooling1
  • Electrical2
  • Emissions2

All 15 Known Issues

NHTSA Recalls7 recalls

POWER TRAIN:DRIVELINE:DRIVESHAFT

Subaru of America, Inc. (Subaru) is recalling certain 2023 Outback, Legacy, Ascent, and Impreza vehicles. The center support bolts for the driveshaft may loosen, resulting in the disconnection of the front end of the driveshaft.

Campaign #23V64700021/09/2023

POWER TRAIN:AUTOMATIC TRANSMISSION:PARK/NEUTRAL START INTERLOCK SWITCH

Subaru of America, Inc. is recalling certain model year 2021 Crosstrek, 2022 Forester, 2021-2023 Legacy, and Outback vehicles. An insufficient weld may allow water to enter the inhibitor switch, causing it to fail.

Campaign #23V75500009/11/2023

ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)

Subaru of America, Inc. (Subaru) is recalling certain 2022 Outback vehicles. The engine wiring harness may have been damaged, resulting in a loose electrical connection to the engine control unit (ECU).

Campaign #22V47300001/07/2022
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Subaru Forester46Subaru WRX31Subaru Ascent25Subaru Solterra24Subaru Crosstrek23Subaru Legacy18

Frequently Asked Questions

What are the most common Subaru Outback problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2022 Subaru Outback has 15 documented issues. The most frequently reported are: Occupant Detection System (ODS) Sensor Failure — Front Passenger Airbag May Not Deploy (Recall 24V-227 / WRA-24), Thermo Control Valve Failure Causing Check Engine Light and Overheating Risk, Inhibitor (Park/Neutral) Switch Water Intrusion Disabling Reverse Lights and Rearview Camera (Recall 23V755000 / WRQ-23). Of these, 2 are rated critical and should be addressed promptly.

Is the Subaru Outback reliable?

The 2022 Subaru Outback has 15 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 2 issues are rated critical: Occupant Detection System (ODS) Sensor Failure — Front Passenger Airbag May Not Deploy (Recall 24V-227 / WRA-24) and Thermo Control Valve Failure Causing Check Engine Light and Overheating Risk. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Subaru Outback problems?

Repair costs for known Subaru Outback issues range from $0 to $3,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Occupant Detection System (ODS) Sensor Failure — Front Passenger Airbag May Not Deploy (Recall 24V-227 / WRA-24), typically costs $0-$0 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2020-2022 Subaru Outback Occupant Detection System (ODS) Sensor Failure — Front Passenger Airbag May Not Deploy (Recall 24V-227 / WRA-24)?

Certain 2020-2022 Outback (and Legacy) vehicles have defective Aisin Occupant Detection System sensors in the front passenger seat. A defect in the ODS sensor printed circuit board can crack a capacitor; moisture entering the capacitor causes a short circuit. This illuminates the… Repairs typically run $0-$0. Severity: high.

What is the 2020-2023 Subaru Outback Thermo Control Valve Failure Causing Check Engine Light and Overheating Risk?

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data compiled from NHTSA recalls, manufacturer TSBs, automotive forums, and AI-assisted research. No aggregated owner-report counts available for this vehicle yet.

Body/Panels
2
  • HVAC1
  • Interior1
  • Engine1
  • Drivetrain1
  • Suspension1
  • Brakes1
  • Recalls7
  • FAQ
  • Filter:
    ALL YEARS2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999

    When Issues Typically Appear

    Driver Monitoring System and EyeSight Camera Faults Causing Persistent Warning Messages
    1K-60K
    Rear Gate Control Module / Power Liftgate Failure and Uncommanded Reversal
    5K-70K
    Seat Heater Failure or Overheating in Front Seats
    10K-70K
    Thermo Control Valve Failure Causing Check Engine Light and Overheating Risk
    15K-90K
    025K50K75K100K mi

    On the 2020-2022 Subaru Outback, certain 2020-2022 Outback (and Legacy) vehicles have defective Aisin Occupant Detection System sensors in the front passenger seat. A defect in the ODS sensor printed circuit board can crack a capacitor; moisture entering the capacitor causes a short circuit. This illuminates the SRS airbag warning lamp and the front passenger frontal-airbag OFF indicator, and the front passenger airbag may fail to deploy in certain crashes, increasing injury risk to an occupant. About 103,114 Outbacks were among the 118,723 vehicles recalled.

    Common Symptoms

    • SRS / airbag warning light illuminated
    • Front passenger airbag OFF indicator stays on with a passenger seated
    • Passenger airbag may not deploy in a crash

    How to Fix

    Free recall remedy under campaign WRA-24 (NHTSA 24V-227): dealers replace all four ODS sensors in the front passenger seat. Parts supply was constrained, so Subaru re-notified owners in phases beginning February 2025. If the airbag/SRS warning light is on or the passenger airbag stays OFF with an occupant seated, verify the VIN and schedule the recall repair.

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    Typical repair cost:$0 - $0

    Research This Issue

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    Community Reported
    High ConfidenceVerifiedReviewed Jun 2026

    On the 2020-2025 Subaru Outback, owners across the 2020-2025 generation report recurring Driver Monitoring System and EyeSight-related warnings such as 'Driver Monitoring System Disabled' or temporary loss of driver-assist functions even in normal conditions. While some events are environmental, complaint patterns and service visits show that camera alignment, software sensitivity, interior camera faults, and related module issues can cause repeated warnings or feature shutdowns. This does not duplicate windshield cracking; the issue is the electronic sensing/monitoring system itself.

    Common Symptoms

    • Driver Monitoring System disabled message
    • EyeSight unavailable message
    • lane keep or adaptive cruise disabled
    • frequent warning chimes
    • warnings return after restart

    How to Fix

    Diagnosis involves scanning ADAS modules for stored faults, checking for software updates, verifying camera visibility and alignment, and inspecting the driver monitoring camera and harness. Repairs may include module reprogramming, camera recalibration, replacement of the driver monitoring unit, or correction of low-voltage conditions that trigger false faults. If the windshield or interior trim has been disturbed, recalibration is especially important.

    Owner tips & cautions

    • TipOwners recommend documenting the exact warning text and weather/light conditions with photos because intermittent ADAS faults are easier for dealers to address when reproduced clearly.
    • TipIf the windshield has ever been replaced or the battery disconnected repeatedly, ask specifically whether EyeSight and driver monitoring calibration/software updates were completed.
    Typical repair cost:$150 - $2,000

    Research This Issue

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    Community Reported
    Medium Confidence

    On the 2020-2023 Subaru Outback 2.5L FB25 naturally aspirated H4, multiple 2020-2023 Outback owners with the 2.5L FB25 engine report failure of the thermo control valve assembly, which can trigger a check engine light, disable normal coolant flow control, and in some cases lead to overheating or poor heater performance. Subaru issued a warranty extension and service communications because the valve's internal position sensor/motor can fail. Owners commonly see the problem well before 100,000 miles, often with no prior cooling-system symptoms.

    Common Symptoms

    • check engine light
    • engine coolant temperature warning
    • poor cabin heat
    • engine running cooler or hotter than normal
    • reduced fuel economy
    • cooling fan behavior changes

    How to Fix

    Diagnosis usually begins with stored cooling-system related DTCs and confirmation of improper thermo control valve operation using scan data. The standard repair is replacement of the thermo control valve assembly, followed by coolant refill/bleed and code clearing. If the vehicle has overheated, the cooling system should be pressure-tested and checked for secondary damage.

    What you need to fix it

    Only diagnosis- and fitment-reviewed repair parts are linked here.

    • Genuine Subaru 21319AA040 Thermo Control Valve Assembly

      updated valve assembly after diagnosis and warranty-extension check Fitment/availability: 2020-2025 Outback 2.5-liter FB25 only; not the 2.4-liter turbo, confirm VIN and coverage Fitment/availability: ships in 1-2 business days with Add …

      SubaruPartsDeal

    As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

    Owner tips & cautions

    • TipIf the CEL appears with cooling-related codes, avoid repeated long trips until coolant temperature behavior is confirmed; some owners caught the issue early before overheating by scanning codes immediately.
    • TipAfter replacement, owners recommend confirming the cooling system was properly vacuum-filled or bled to avoid trapped air and erratic heater performance.
    Typical repair cost:$900 - $1,800

    Research This Issue

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    Community Reported
    High Confidence

    On the 2021-2023 Subaru Outback, an insufficient weld between the switch stator and cover of the transmission inhibitor (park/neutral start interlock) switch allows water intrusion over time, causing the switch to become inoperative. When it fails, the reverse lights do not illuminate and the rearview/backup camera image does not display when the vehicle is shifted into reverse, increasing the risk of a backover crash. Subaru recalled certain 2021-2023 Outback (and Legacy, plus 2021 Crosstrek and 2022 Forester) vehicles; roughly 51,470 Outbacks were among the ~95,830 total affected.

    Common Symptoms

    • Backup/rearview camera image does not display when in reverse
    • Reverse (backup) lights do not illuminate
    • Intermittent loss of rear camera
    • Possible no-crank or shift-interlock related faults

    How to Fix

    Free recall remedy: Subaru dealers replace the inhibitor switch under campaign WRQ-23 (NHTSA 23V755000). Owner notification letters mailed beginning January 2024. If the backup camera goes dark or reverse lights stop working, verify the VIN at NHTSA or with a dealer and have the switch replaced.

    Typical repair cost:$0 - $0

    Research This Issue

    GoogleRedditYouTubeNHTSA
    Community Reported
    High ConfidenceVerifiedReviewed Jun 2026

    On the 2015-2024 Subaru Outback, like many modern automakers, Subaru switched to soy/plant-based wire insulation, and owners widely report that rodents (mice/rats) are attracted to and chew through the harnesses, causing warning lights, no-starts, sensor faults, and blown fuses. Documented Outback repair bills range from ~$1,500 to $3,500+, with damage found in the engine-bay harnesses, MAP/MAF wiring, fuel lines, and even dash harnesses. The soy-insulation issue has spawned class-action litigation against several manufacturers including Subaru. Owners report being unaware of the vulnerability at purchase, and standard warranty typically excludes 'rodent/animal damage,' pushing the cost onto comprehensive insurance or the owner.

    Common Symptoms

    • Multiple/unrelated warning lights
    • Intermittent no-start or stalling
    • Blown fuses
    • Bite marks and nesting debris in engine bay
    • HVAC or sensor malfunctions

    How to Fix

    Inspect the engine bay and under-dash harnesses for bite marks, droppings, and nesting material at the first sign of intermittent electrical faults or warning lights. Repair chewed sections with proper splices/soldered-and-heatshrink joints or harness replacement — avoid quick tape jobs on safety circuits. Prevent recurrence with rodent-deterrent tape (capsaicin-treated harness tape), ultrasonic/peppermint deterrents, hood/cabin traps, and keeping the car driven and free of nearby food sources. Comprehensive (not collision) insurance often covers rodent damage — file a claim for large repairs. Keep the cabin air intake and blower area clear, as nests there also damage HVAC wiring.

    Typical repair cost:$500 - $3,500

    Research This Issue

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    Community Reported
    Medium ConfidenceVerifiedReviewed Jul 2026

    On the 2010-2022 Subaru Outback, p0455 indicates a large (gross) EVAP leak — the system can't hold pressure/vacuum at all during the self-test. Across the Subaru lineup (Outback, Forester, Impreza, Crosstrek) the standout pattern is the purge control solenoid valve failing due to internal seal degradation, which leaves the system effectively open. The other frequent Outback source is the charcoal canister assembly behind the left-rear wheel: later Outbacks integrate a leak-check valve mounted on the canister, and a stuck/failed valve or a cracked canister triggers P0455. A badly missing, cross-threaded, or grossly leaking gas cap will also set it. Unlike the small-leak P0442, a gross leak often comes with a noticeable fuel-vapor smell near the tank/filler.

    Common Symptoms

    • Check engine light
    • Fuel/gas smell near tank or filler
    • Slightly reduced fuel economy
    • No lasting drivability problem

    How to Fix

    Verify the gas cap is present, correct, and sealing. Smoke-test the EVAP system — apply smoke at the purge line and watch where it escapes. Most Outback fixes are replacing the purge control solenoid valve; if the leak is at the rear, drop the left-rear wheel-well liner to access and replace the charcoal canister / leak-check valve assembly. Inspect vapor lines for cracks or disconnection.

    What you need to fix it

    Only diagnosis- and fitment-reviewed repair parts are linked here.

    • Genuine Subaru 42031AJ001 Fuel Filler Cap

      only for a missing cap or one that fails inspection/seal testing Fitment/availability: 2010-2012 Outback all listed engines; confirm VIN Fitment/availability: ships in 1-2 business days with Add to Cart live when reviewed

      SubaruPartsDeal
    • Genuine Subaru 42031FJ001 Fuel Filler Cap

      later cap only when the cap is the proven gross leak Fitment/availability: 2013-2022 Outback branch within this card, all listed engines; confirm VIN Fitment/availability: Add to Cart live when reviewed

      SubaruPartsDeal

    As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

    Typical repair cost:$30 - $700

    Research This Issue

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    Community Reported
    High ConfidenceVerifiedReviewed Jul 2026

    On the 2005-2022 Subaru Outback, p0442 means the ECM detected a small leak in the sealed evaporative-emissions system during its self-test. On the Outback the three usual culprits, in order, are: (1) the fuel filler cap — its rubber O-ring hardens and cracks with age, or the cap isn't clicked tight, or a non-OEM cap seals poorly; (2) the EVAP purge valve (solenoid), which should hold vacuum but starts to weep past its internal seal; and (3) the vent valve on/near the charcoal canister, which can't seal during the leak test if dirt or corrosion is present. Because the leak is tiny, drivers usually notice nothing but the check-engine light, and the code is often intermittent (comes and goes with temperature and fuel level).

    Common Symptoms

    • Check engine light (often intermittent)
    • No drivability change
    • Occasional faint fuel smell
    • Code may clear itself then return

    How to Fix

    Start with the cheapest fix: inspect the gas cap, make sure it clicks, and replace it with an OEM cap if the O-ring is cracked or the cap is aftermarket. Clear the code and re-drive. If it returns, smoke-test the EVAP system to pinpoint the leak, then replace the purge solenoid or vent valve as indicated. Check vapor hoses and the canister connections for cracks.

    What you need to fix it

    Only diagnosis- and fitment-reviewed repair parts are linked here.

    • Genuine Subaru 42031AG00A Fuel Filler Cap

      cap only after inspection or seal testing proves the original cap failed Fitment/availability: 2005-2009 Outback 2.5, 2.5 turbo and 3.0 H6 branches; confirm VIN Fitment/availability: ships in 1-3 business days with Add to Cart live when …

      SubaruPartsDeal
    • Genuine Subaru 42031AJ001 Fuel Filler Cap

      middle-generation cap only after a failed cap test Fitment/availability: 2010-2012 Outback all listed engines; replaces 42031AJ000, confirm VIN Fitment/availability: ships in 1-2 business days with Add to Cart live when reviewed

      SubaruPartsDeal
    • Genuine Subaru 42031FJ001 Fuel Filler Cap

      later cap only after a failed cap test Fitment/availability: 2013-2022 Outback branch within this card, all listed engines; replaces 42031FJ000, confirm VIN Fitment/availability: Add to Cart live when reviewed

      SubaruPartsDeal

    As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

    Typical repair cost:$20 - $400

    Research This Issue

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    Community Reported
    High ConfidenceVerifiedReviewed Jul 2026

    On the 2020-2024 Subaru Outback, owners of 2020-2024 Outbacks frequently report power rear gate problems including failure to open or close, repeated beeping, stopping mid-travel, or reversing unexpectedly. Subaru issued service information for rear gate control module logic and initialization issues, and owner complaints commonly describe the hatch becoming unusable until reset or repair. In some cases the problem is tied to low system voltage, latch alignment, or module/software faults.

    Common Symptoms

    • power liftgate will not open
    • power liftgate stops halfway
    • repeated warning beeps
    • liftgate reverses direction
    • manual operation only
    • dash rear gate warning

    How to Fix

    Diagnosis should include battery voltage testing, scan-tool checks for rear gate module faults, latch/strut inspection, and confirmation of proper gate initialization. Repairs range from module reprogramming or reset procedures to latch, switch, spindle drive, or control module replacement. If the gate is misaligned, adjustment may be required to prevent false pinch detection.

    Owner tips & cautions

    • TipMany owners report that a weak battery can aggravate rear gate faults, so load-test the battery before replacing liftgate parts.
    • TipAfter repairs or battery disconnect, perform the factory rear gate initialization procedure exactly as specified; incomplete initialization can mimic a hardware failure.
    Typical repair cost:$150 - $1,800

    Research This Issue

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    Community Reported
    High Confidence

    On the 2010-2022 Subaru Outback, outbacks with a sunroof/moonroof commonly develop interior water leaks caused by clogged, kinked, or (on some 2020 Touring XT builds) factory-blocked sunroof drain tubes. Rather than draining out, water backs up in the sunroof frame and overflows into the headliner and down the A-pillars, soaking the front and rear footwells, wetting carpet/underlay, and in some cases flooding audio/electrical components under the seats — which can then cause secondary electrical faults and musty odors/mold. Subaru has issued service bulletins for water intrusion (e.g., leaks appearing at the map-light/overhead area on 2010-2013 Legacy/Outback). Complaints span many model years and generations.

    Common Symptoms

    • Wet carpet in front or rear footwells
    • Water stains on headliner near A-pillar
    • Dripping from overhead/map-light area
    • Musty/mildew smell in cabin
    • Fogged windows or electrical faults after rain

    How to Fix

    Diagnose by pouring a small amount of water into the sunroof channel corners and watching where it exits — it should drain out below each A-pillar/rocker, not into the cabin. Clear the four drain tubes with low-pressure compressed air or a soft trimmer line (never a stiff wire that can pop the hose off the fitting). On affected builds, remove assembly grease/debris plugging the drain holes. Dry out and treat any soaked carpet/insulation promptly to prevent mold and electrical corrosion, and check under-seat modules for water damage. For vehicles in the New Car warranty window, reference the applicable water-leak TSB for coverage. Periodic drain cleaning is good preventive maintenance.

    Typical repair cost:$150 - $800

    Research This Issue

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    Community Reported
    Medium ConfidenceVerifiedReviewed Jul 2026

    On the 2015-2022 Subaru Outback, the forward-mounted A/C condenser and its connecting refrigerant lines are vulnerable to leaks - sometimes from road-debris/stone damage to the thin condenser, sometimes from a damaged line or failed O-ring at a hose connection. The system slowly loses refrigerant and cooling fades, with reports on low-mileage cars including a 2022 Onyx at ~5,800 miles found with a damaged condenser line. Because the condenser sits at the front, it isn't economically repairable and must be replaced.

    Common Symptoms

    • A/C blows warm or only cools weakly after a period of normal operation
    • Gradual loss of cooling over weeks/months (slow refrigerant leak)
    • Oily/dye residue at the condenser or a line fitting
    • A/C works at highway speed but not at idle as charge drops

    How to Fix

    Pressure-test/UV-dye the system to locate the leak, then replace the leaking A/C condenser (or repair the damaged line / failed O-ring), evacuate and recharge the system. A condenser replacement with recharge typically runs roughly $500-$1,100 at an independent shop.

    What you need to fix it

    Only diagnosis- and fitment-reviewed repair parts are linked here.

    • Genuine Subaru 73210AL00A A/C Condenser with Integrated Receiver-Drier

      condenser only after the condenser itself is confirmed leaking or damaged Fitment/availability: 2015-2019 Outback 2.5-liter and 3.6-liter branches; confirm VIN Fitment/availability: ships in 1-3 business days with Add to Cart live when r…

      SubaruPartsDeal
    • Genuine Subaru 73210AN00A A/C Condenser with Integrated Receiver-Drier

      later condenser only after the condenser itself is confirmed leaking or damaged Fitment/availability: 2020-2022 Outback 2.5-liter and 2.4-liter turbo catalog branch; direct summary lists 2020-2021 and the 2022 vehicle catalog carries the…

      SubaruPartsDeal

    As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

    Typical repair cost:$500 - $1,100

    Research This Issue

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    Community Reported
    High ConfidenceVerifiedReviewed Jun 2026

    On the 2020-2024 Subaru Outback, owners have reported front seat heaters that stop working, heat unevenly, or become excessively hot in localized areas. Complaints and forum reports point to failures in the seat heater element, thermostat/control logic, or seat cushion wiring within this generation. The issue is more than comfort-related when overheating occurs, as some owners describe burning sensations or needing to shut the heater off immediately.

    Common Symptoms

    • seat heater inoperative
    • one seat heats less than the other
    • hot spot in seat cushion
    • heater shuts off unexpectedly
    • burning sensation from seat

    How to Fix

    Diagnosis typically includes checking heater switch operation, seat heater current draw, and continuity of the seat cushion/backrest elements. Repair often requires replacing the failed heater pad or seat trim assembly, and in some cases the seat control module or wiring repair. Technicians should verify both cushion and backrest elements because one section may fail while the other still heats.

    Owner tips & cautions

    • TipIf the seat gets unusually hot in one spot, stop using the heater until inspected; owners recommend not assuming it is normal break-in behavior.
    • TipWhen only one section of the seat heats, ask the shop to test cushion and backrest elements separately before replacing expensive seat trim assemblies.
    Typical repair cost:$300 - $1,200

    Research This Issue

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    Community Reported
    Medium Confidence

    On the 2020-2025 Subaru Outback 2.4L Turbo FA24 (FA24F / FA24DIT), the turbocharged FA24 (FA24F/FA24DIT) 2.4L boxer in Outback XT, Onyx Edition XT, and Wilderness trims uses port-less direct injection only, so fuel never washes the back of the intake valves. Carbon sludge accumulates on the intake ports/valves, typically becoming noticeable around 40,000-60,000 miles, causing rough idle, misfires, hesitation, and gradual power loss. Some owners also report elevated oil consumption on this engine, which accelerates deposit formation. Because no port injectors exist, fuel-additive cleaners do not reach the valves.

    Common Symptoms

    • Rough or unstable idle
    • Cylinder misfire
    • Hesitation and reduced power
    • Check engine light (misfire codes)
    • Elevated oil consumption between changes

    How to Fix

    The effective remedy is mechanical cleaning — walnut-shell media blasting of the intake valves every ~50,000-60,000 miles (about $400-$1,200 depending on shop). Mitigate (not prevent) buildup with top-tier synthetic oil at shorter 4,000-5,000 mile intervals, top-tier fuel, and an occasional intake cleaner/Italian tune-up. Monitor oil level between changes given the engine's consumption tendency.

    Typical repair cost:$400 - $1,200

    Research This Issue

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    Community Reported
    High ConfidenceVerifiedReviewed Jun 2026

    On the 2015-2022 Subaru Outback, owners report a speed-dependent whine/howl or turbine-like noise from the rear/undercarriage that turns out to be the rear differential or a driveline carrier bearing rather than a wheel bearing. The tell-tale difference: differential and driveshaft-related noise rises in pitch about 4x as fast as road speed (and often changes on accel vs coast/decel), while wheel-bearing noise scales ~2x with speed and shifts with cornering load. Causes include premature rear-diff gear-surface wear under severe use (steep grades, extreme weather, towing) and worn carrier/center-support bearings. Subaru issued a service bulletin (03-87-21) addressing rear differential noise and introduced a higher-viscosity gear oil to better protect gear surfaces under demanding conditions.

    Common Symptoms

    • Whine or howl from rear that scales with speed
    • Pitch changes between acceleration and coasting
    • Turbine/gear-like drone under the car
    • Vibration from driveline at certain speeds
    • Noise unaffected by steering input (vs wheel bearing)

    How to Fix

    Distinguish diff/driveline noise from a wheel bearing by testing on accel vs coast and noting the 4x-vs-2x speed relationship, and by inspecting the driveshaft center support/carrier bearing for play and cracked rubber. For gear-surface wear caught early, a fluid change to the updated higher-viscosity Subaru rear-differential gear oil per bulletin 03-87-21 can help; a worn carrier/center bearing is replaced as a unit; a howling, worn ring-and-pinion requires diff service or replacement. Verify correct fluid level and that the rear diff hasn't been run low. Have a tech road-test to localize the source before authorizing an expensive diff teardown.

    What you need to fix it

    Only diagnosis- and fitment-reviewed repair parts are linked here.

    • Genuine Subaru 27111AL03E Propeller Shaft Assembly

      complete shaft for the validated non-serviceable center-support branch Fitment/availability: 2015-2019 Outback 2.5i CVT only; confirm VIN and that center-support/shaft fault is localized Fitment/availability: ships in 1-3 business days w…

      SubaruPartsDeal
    • Subaru SOA427V1700 High Performance 75W-90 Gear Oil, 1 Quart

      required fill for the applicable replacement differential, not a guaranteed noise cure Fitment/availability: Subaru fluid explicitly listed in bulletin 03-87-21 for the applicable R152 replacement procedure Fitment/availability: Add to C…

      MAPerformance
    • Genuine Subaru 38300AC370 R152 Differential Carrier Assembly

      ratio-matched carrier after bulletin diagnosis confirms worn differential Fitment/availability: 2020-2021 Outback 2.5 branch with R152 ID 42/VB1AAB and 3.700 ratio; verify label and VIN Fitment/availability: ships in 1-3 business days wi…

      SubaruPartsDeal
    • Genuine Subaru 38300AC380 R152 Differential Carrier Assembly

      alternate ratio-matched carrier after diagnosis Fitment/availability: 2018-2021 Outback 2.5 branch with R152 ID 43/VB1BAA and 3.900 ratio; verify label and VIN Fitment/availability: ships in 1-3 business days with Add to Cart live when r…

      SubaruPartsDeal
    • Genuine Subaru 38300AC390 R152 Differential Carrier Assembly

      alternate ratio-matched carrier after diagnosis Fitment/availability: 2018-2019 Outback 2.5 branch with R152 ID 44/VB1CAA and 4.111 ratio; verify label and VIN Fitment/availability: ships in 1-3 business days with Add to Cart live when r…

      SubaruPartsDeal

    As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

    Typical repair cost:$100 - $3,000

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    Community Reported
    Medium ConfidenceVerifiedReviewed Jul 2026

    On the 2010-2024 Subaru Outback, owners across multiple Outback generations report premature wheel hub bearing failure, most commonly showing up between roughly 80,000 and 120,000 miles. The classic symptom is a low-pitched droning/humming or 'beehive' noise that begins around 45-55 mph and gets louder with speed, and that changes pitch when the car is loaded up in a curve (louder turning one direction, quieter the other). Subaru hubs frequently fail WITHOUT the traditional 'play' you can feel by rocking the wheel, which leads to misdiagnosis as tire noise. Some owners report replacing three separate bearings on a single car. A useful field test is an infrared thermometer after a highway drive: a failing bearing runs noticeably hotter (~150F+) than its healthy siblings (~120F).

    Common Symptoms

    • Droning or humming noise starting around 45-55 mph
    • Noise gets louder as speed increases
    • Pitch changes when turning left vs right
    • Growling/grinding from one corner
    • Bearing hotter than others by IR thermometer
    • Sometimes no detectable wheel play despite failure

    How to Fix

    Diagnose by road-testing for a speed-dependent hum that shifts with cornering load, and confirm with an IR temperature check across all four hubs or by listening with a chassis-ear/stethoscope. The correct repair is replacement of the complete hub bearing assembly (the bearing is pressed into the knuckle on many years; the pressed cartridge or full knuckle-mounted hub is replaced as a unit). Use OEM Subaru or a top-tier supplier (Koyo/NSK/NTN, which are the OE bearing makers, or Timken/SKF) rather than budget bearings, which frequently fail again quickly. Replace in axle pairs only if both are noisy. Have the tech torque the axle nut to spec and inspect the ABS tone ring/sensor while apart.

    What you need to fix it

    Only diagnosis- and fitment-reviewed repair parts are linked here.

    • Genuine Subaru 28373AG01A Front Axle Hub Complete

      early-generation front bolt-on hub after that corner is confirmed failed Fitment/availability: 2010-2014 Outback front, all listed engines/trims; quantity one for the confirmed corner, confirm VIN Fitment/availability: ships in 1-3 busin…

      SubaruPartsDeal
    • Genuine Subaru 28373XC01A Front Hub Unit Complete

      later-generation front bolt-on hub after that corner is confirmed failed Fitment/availability: current supersession covering 2015-2024 Outback front branches in this card, all listed engines; confirm VIN Fitment/availability: ships in 1-…

      SubaruPartsDeal
    • Genuine Subaru 28473AJ00A Rear Hub Unit Complete

      early-generation rear bolt-on hub after that corner is confirmed failed Fitment/availability: 2010-2014 Outback rear, all listed engines/trims; quantity one for the confirmed corner, confirm VIN Fitment/availability: ships in 1-3 busines…

      SubaruPartsDeal
    • Genuine Subaru 28473XC00E Rear Hub and Bearing

      later-generation rear bolt-on hub after that corner is confirmed failed Fitment/availability: current replacement for 28473AL00A and 28473XC00A/B/C/D covering 2015-2024 Outback rear branches in this card; confirm VIN Fitment/availability…

      SubaruPartsDeal
    • Genuine Subaru 902170049 Axle Nut

      new staked axle nut when the front hub procedure removes the original nut Fitment/availability: cataloged on the front-axle branch through 2024 Outback including 2.5-liter and 2.4-liter turbo models; one per disturbed front axle, confirm…

      SubaruPartsDeal

    As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

    Typical repair cost:$200 - $700

    Research This Issue

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    Community Reported
    Medium ConfidenceVerifiedReviewed Jul 2026

    On the 2013-2024 Subaru Outback, a very common owner complaint is that the Outback's rear brake pads and rotors wear out dramatically faster than the fronts — often gone by 20,000-40,000 miles while the fronts still have most of their life. Multiple owners report metal-on-metal rear pads and scored rotors at low mileage, sometimes replaced twice before the fronts need service (the reverse of most cars). The cause is design/software: the Outback uses the ABS/VDC system as an electronic brake-force distributor and biases braking rearward for straight-line stability, while the rear pads/rotors are physically smaller than the fronts. Stability control and hill-holder also drag the rears. It rarely leaves owners stranded but is a recurring, unexpected maintenance expense.

    Common Symptoms

    • Rear brake squeal or grinding at low mileage
    • Rear pads worn out well before fronts
    • Scored/grooved rear rotors
    • Metal-on-metal noise from rear
    • Brake dust heavier on rear wheels

    How to Fix

    Inspect rear pads more often than you would on a typical vehicle (every service after ~15k miles). When replacing, this is a routine pad-and-rotor job — use quality pads (Akebono ceramic is the OE-style choice on many Subarus) and properly bed them in. Ensure caliper slide pins are cleaned and greased and that the parking-brake/caliper isn't dragging, which accelerates wear. Owners who tow, drive hilly terrain, or use the car in stop-and-go traffic should expect rear service roughly twice as often as fronts. There is no recall — this is inherent to the brake-bias design, so budget for it rather than chasing a nonexistent defect.

    What you need to fix it

    Only diagnosis- and fitment-reviewed repair parts are linked here.

    • Genuine Subaru 26696AG051 Rear Brake Pad Kit

      rear axle pad set after measurement and drag diagnosis Fitment/availability: 2013-2014 Outback 2.5i branch; kit covers both rear wheels, confirm VIN Fitment/availability: ships in 1-3 business days with Add to Cart live when reviewed

      SubaruPartsDeal
    • Genuine Subaru 26696XA011 Rear Brake Pad Kit

      H6 rear axle pad set after inspection Fitment/availability: 2013-2014 Outback 3.6R branch; replaces 26696XA000/010, confirm VIN Fitment/availability: ships in 1-3 business days with Add to Cart live when reviewed

      SubaruPartsDeal
    • Genuine Subaru 26696AL020 Rear Brake Pads

      2015-2019 rear axle pad set after measurement and diagnosis Fitment/availability: 2015-2019 Outback rear branch within this card; supersedes 26696AL000/01A, confirm VIN Fitment/availability: direct OEM product page live when reviewed

      SubaruOnlineParts
    • Genuine Subaru 26696AN00A Rear Brake Pads

      2020-2024 rear axle pad set after measurement and EPB-aware diagnosis Fitment/availability: 2020-2024 Outback rear branch within this card, all listed engines; confirm VIN Fitment/availability: Add to Cart live when reviewed

      Flatirons Tuning

    As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

    Typical repair cost:$250 - $650

    Research This Issue

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    Community Reported
    Medium ConfidenceVerifiedReviewed Jul 2026

    VISIBILITY:WINDSHIELD

    Subaru of America, Inc. (Subaru) is recalling certain 2022 Impreza and Outback vehicles. The incorrect paint clearcoat may have been applied, which can cause the windshield to be insufficiently bonded to the vehicle. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 212, "Windshield Mounting."

    Campaign #22V71200022/09/2022

    AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER

    Subaru of America, Inc. (Subaru) is recalling certain 2020-2022 Outback and Legacy vehicles. A capacitor in the sensors for the Occupant Detection System (ODS) may crack and short circuit, which can prevent the front passenger air bag from deploying in a crash.

    Campaign #24V22700022/03/2024

    + 2 more recalls. Check all on NHTSA.gov

    Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

    get a full repair guide

    Multiple 2020-2023 Outback owners with the 2.5L FB25 engine report failure of the thermo control valve assembly, which can trigger a check engine light, disable normal coolant flow control, and in some cases lead to overheating or poor heater performance. Subaru issued a warranty… Repairs typically run $900-$1,800. Severity: high.

    What is the 2021-2023 Subaru Outback Inhibitor (Park/Neutral) Switch Water Intrusion Disabling Reverse Lights and Rearview Camera (Recall 23V755000 / WRQ-23)?

    An insufficient weld between the switch stator and cover of the transmission inhibitor (park/neutral start interlock) switch allows water intrusion over time, causing the switch to become inoperative. When it fails, the reverse lights do not illuminate and the rearview/backup cam… Repairs typically run $0-$0. Severity: medium.

    What is the 2010-2022 Subaru Outback P0455 — Gross EVAP Leak from Failed Purge Control Solenoid or Charcoal Canister Assembly?

    P0455 indicates a large (gross) EVAP leak — the system can't hold pressure/vacuum at all during the self-test. Across the Subaru lineup (Outback, Forester, Impreza, Crosstrek) the standout pattern is the purge control solenoid valve failing due to internal seal degradation, which… Repairs typically run $30-$700. Severity: medium.

    What is the 2015-2022 Subaru Outback A/C Condenser / Refrigerant Line Leak Causing Loss of Cooling?

    The forward-mounted A/C condenser and its connecting refrigerant lines are vulnerable to leaks - sometimes from road-debris/stone damage to the thin condenser, sometimes from a damaged line or failed O-ring at a hose connection. The system slowly loses refrigerant and cooling fad… Repairs typically run $500-$1,100. Severity: medium.

    What is the 2020-2024 Subaru Outback Seat Heater Failure or Overheating in Front Seats?

    Owners have reported front seat heaters that stop working, heat unevenly, or become excessively hot in localized areas. Complaints and forum reports point to failures in the seat heater element, thermostat/control logic, or seat cushion wiring within this generation. The issue is… Repairs typically run $300-$1,200. Severity: medium.

    What is the 2020-2024 Subaru Outback Rear Gate Control Module / Power Liftgate Failure and Uncommanded Reversal?

    Owners of 2020-2024 Outbacks frequently report power rear gate problems including failure to open or close, repeated beeping, stopping mid-travel, or reversing unexpectedly. Subaru issued service information for rear gate control module logic and initialization issues, and owner… Repairs typically run $150-$1,800. Severity: medium.

    What is the 2020-2025 Subaru Outback FA24 2.4L Turbo Direct-Injection Intake-Valve Carbon Buildup (XT / Wilderness / Onyx Turbo Models)?

    The turbocharged FA24 (FA24F/FA24DIT) 2.4L boxer in Outback XT, Onyx Edition XT, and Wilderness trims uses port-less direct injection only, so fuel never washes the back of the intake valves. Carbon sludge accumulates on the intake ports/valves, typically becoming noticeable arou… Repairs typically run $400-$1,200. Severity: medium.

    What is the 2020-2025 Subaru Outback Driver Monitoring System and EyeSight Camera Faults Causing Persistent Warning Messages?

    Owners across the 2020-2025 generation report recurring Driver Monitoring System and EyeSight-related warnings such as 'Driver Monitoring System Disabled' or temporary loss of driver-assist functions even in normal conditions. While some events are environmental, complaint patter… Repairs typically run $150-$2,000. Severity: medium.

    What is the 2015-2024 Subaru Outback Rodent-Chewed Wiring (Soy-Based Insulation) Causing Electrical Faults?

    Like many modern automakers, Subaru switched to soy/plant-based wire insulation, and owners widely report that rodents (mice/rats) are attracted to and chew through the harnesses, causing warning lights, no-starts, sensor faults, and blown fuses. Documented Outback repair bills r… Repairs typically run $500-$3,500. Severity: medium.

    What is the 2010-2022 Subaru Outback Sunroof/Moonroof Drain Tube Clog Causing Interior Water Leaks?

    Outbacks with a sunroof/moonroof commonly develop interior water leaks caused by clogged, kinked, or (on some 2020 Touring XT builds) factory-blocked sunroof drain tubes. Rather than draining out, water backs up in the sunroof frame and overflows into the headliner and down the A… Repairs typically run $150-$800. Severity: medium.

    What is the 2015-2022 Subaru Outback Rear Differential / Driveline Carrier Bearing Whine?

    Owners report a speed-dependent whine/howl or turbine-like noise from the rear/undercarriage that turns out to be the rear differential or a driveline carrier bearing rather than a wheel bearing. The tell-tale difference: differential and driveshaft-related noise rises in pitch a… Repairs typically run $100-$3,000. Severity: medium.

    What is the 2010-2024 Subaru Outback Front and Rear Wheel Hub Bearing Failure Causing Droning/Humming Noise?

    Owners across multiple Outback generations report premature wheel hub bearing failure, most commonly showing up between roughly 80,000 and 120,000 miles. The classic symptom is a low-pitched droning/humming or 'beehive' noise that begins around 45-55 mph and gets louder with spee… Repairs typically run $200-$700. Severity: medium.

    What is the 2013-2024 Subaru Outback Premature Rear Brake Pad and Rotor Wear?

    A very common owner complaint is that the Outback's rear brake pads and rotors wear out dramatically faster than the fronts — often gone by 20,000-40,000 miles while the fronts still have most of their life. Multiple owners report metal-on-metal rear pads and scored rotors at low… Repairs typically run $250-$650. Severity: low.

    What is the 2005-2022 Subaru Outback P0442 — Small EVAP Leak from Gas Cap O-Ring or Leaking Purge/Vent Valve?

    P0442 means the ECM detected a small leak in the sealed evaporative-emissions system during its self-test. On the Outback the three usual culprits, in order, are: (1) the fuel filler cap — its rubber O-ring hardens and cracks with age, or the cap isn't clicked tight, or a non-OEM… Repairs typically run $20-$400. Severity: low.