P0868 on Subaru: How to Diagnose & Fix
Transmission Fluid Pressure Low
5 Subaru models · 6 documented issues · 5 critical · $200-$9,000 repair
P0868 on Subaru by model: symptoms, diagnosis and fix
The Lineartronic CVT can develop shudder, hesitation, or jerky operation, especially during light acceleration at low speeds. Subaru has updated CVT software multiple times to address these concerns.
Common Symptoms
- Shudder during light acceleration
- Hesitation from stop
- Jerky operation at low speeds
- CVT whine or noise
- Delayed engagement
How to Fix
Have dealer update CVT software to latest version. CVT fluid change may help. In severe cases, valve body or CVT replacement may be needed. Subaru extended CVT warranty on some vehicles.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Owner tips & cautions
- TipGet a proper diagnosis before replacing parts - similar symptoms can have different causes
- TipSearch Subaru Outback forums and owner groups for real-world experiences and DIY guides
- TipGet multiple quotes from independent mechanics - dealer prices can be 2-3x higher for the same repair
Sources for this issue (2)
Early Lineartronic CVT Outbacks (2010-2015) have documented internal CVT failures — most commonly valve-body faults, but also chain/pulley and pressure-control problems — that can cause harsh or delayed engagement, RPM flare, jerking, limp mode, or complete loss of drive. Subaru extended the CVT powertrain warranty to 10 years / 100,000 miles on 2010-2015 Legacy/Outback 2.5L CVT and 2015 3.6L CVT models (and related models) under bulletin 16-107-17R, while stating the extension was not in response to a specific condition. A revised/upgraded valve body is installed at repair. This is separate from the low-speed torque-converter shudder complaint; here the transmission can set fault codes and go into failsafe. Out of warranty, a full CVT replacement is a multi-thousand-dollar repair.
Common Symptoms
- Harsh or delayed engagement into gear
- RPM flare / slipping under acceleration
- Jerking or shuddering
- Transmission warning light / limp mode
- Whining or loss of drive
How to Fix
If you experience harsh/delayed engagement, flaring, jerking, or a transmission warning, scan for CVT codes and get it evaluated quickly. First verify the vehicle is within (or was serviced under) the 10-year/100,000-mile CVT Warranty Extension — if so the valve-body or CVT repair should be free; escalate to Subaru of America if a dealer initially denies coverage, since owners report success on valve-body claims. Keep CVT fluid at the correct level/spec and address any leaks promptly, as low pressure accelerates valve-body wear. Out of warranty, a rebuilt/updated valve body is far cheaper than a complete CVT unit — get a diagnosis of the specific failed component before authorizing a full replacement.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine Subaru 31706AA331 CVT Control Valve Body
early CVT valve body only after TCM diagnosis proves the valve-body fault Fitment/availability: 2010-2012 Outback 2.5-liter EJ253 CVT branch; confirm VIN and production date Fitment/availability: ships in 1-2 business days with Add to Ca…
- Genuine Subaru 31825AA055 CVT Control Valve Kit
later 2.5-liter CVT valve body only after TCM diagnosis proves the fault Fitment/availability: 2013-2015 Outback 2.5-liter FB25 CVT branch; current supersession of 31825AA050-054, confirm VIN Fitment/availability: Add to Cart live when r…
- Genuine Subaru 31706AA144 High-Torque CVT Control Valve Body
2015 3.6R high-torque CVT valve body after exact diagnosis and VIN selection Fitment/availability: 2015 Outback 3.6R CVT branch within this card; current supersession of production-specific 31706AA140/141, confirm VIN Fitment/availabilit…
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Sources for this issue (3)
The Ascent's high-torque Lineartronic CVT (TR690) paired with the 2.4L turbo FA24 engine exhibits hesitation from stops, harsh engagement when shifting from Park to Drive/Reverse, and surging at low speeds. The TR690 CVT must handle significantly more torque than the TR580 used in Subaru's non-turbo models, leading to durability concerns. Multiple TSBs have addressed calibration issues. Some owners report complete CVT failure under 60,000 miles.
Common Symptoms
- 1-2 second hesitation when accelerating from a stop
- Harsh thunk when shifting from Park to Drive or Reverse
- Surging or bucking at low speeds in parking lots
- Shuddering during light acceleration at 25-40 mph
- Transmission warning light
- Burning smell from transmission area
How to Fix
Have dealer apply latest TCM software calibration (multiple TSBs released). Perform CVT fluid drain and refill with the CVT fluid Subaru specifies for the Ascent (TR690) - note this is different from the standard CVTF-II (SOA427V1660) used in TR580 units. If hesitation persists after software update, valve body replacement may be needed. For complete failure, Subaru reman CVT is available. In June 2025 Subaru extended CVT coverage on 2019-2020 Ascents to 10 years/100,000 miles, with reimbursement for earlier paid repairs; later Ascents carry the standard 5-year/60,000-mile powertrain warranty.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Sources for this issue (3)
The Lineartronic CVT (TR580) used in Crosstreks develops chain stretch over time, typically between 80,000-130,000 miles. The stretched chain causes slippage, resulting in judder during light acceleration, particularly between 20-45 mph. The issue worsens in cold weather and uphill conditions. Subaru extended CVT coverage on 2013-2015 Crosstreks to 10 years/100,000 miles under service bulletin 16-107-17R and released multiple software calibration updates. In severe cases, the CVT requires complete replacement.
Common Symptoms
- Juddering or shaking during light acceleration at 20-45 mph
- Slipping sensation when climbing hills
- Delayed response when pressing accelerator
- Whining noise from transmission that increases with speed
- Check Engine Light with CVT-related codes (P0700, P2764)
How to Fix
Start with CVT fluid drain and refill using Subaru CVT Fluid Lineartronic II (SOA427V1700). Have dealer apply latest transmission control module software update. If judder persists, valve body replacement may resolve the issue. For severe chain stretch, full CVT replacement is needed (Subaru reman unit available). Verify if covered under Subaru's CVT warranty extension (bulletin 16-107-17R: 2013-2015 Crosstrek, 10 years/100,000 miles from the original warranty start date).
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Sources for this issue (6)
- Subaru Bulletin 16-107-17R: CVT Warranty Extension to 10 Years/100,000 Milestsb
- Subaru Transmission Warranty Extension (CarComplaints)article
- CVT Chain Snapped Crosstrek - Subaru Crosstrek and XV Forumsforum
- Buying a 2013 Crosstrek XV CVT break - Subaru Crosstrek and XV Forumsforum
- CVT chain broke - Subaru Outback Forumsforum
- Subaru Crosstrek Transmission Problems TR580 - Cherish Your Carmedia
The 2010+ Legacy uses the Lineartronic CVT (TR690 behind the 2010-2012 EJ253 2.5L, TR580 behind the 2013+ FB25 2.5L) which has widespread reports of premature failure, typically between 80,000-140,000 miles. Failures include chain stretch, torque converter shudder, valve body malfunction, and complete transmission failure. The 2010-2014 models are most affected. Subaru extended CVT warranty coverage to 10 years/100,000 miles on 2010-2015 Legacys. Symptoms often start with subtle judder during light acceleration and progress to complete loss of drive.
Common Symptoms
- Shudder during light throttle acceleration
- Delayed engagement when shifting from Park
- Loud whining from transmission area
- Loss of power under acceleration
- Transmission overheating warning
- Complete loss of forward or reverse gear
How to Fix
Perform CVT fluid exchange with Subaru Lineartronic CVT Fluid II. Apply latest TCM software calibration at dealer. For torque converter shudder, converter replacement ($1,500-2,500) is often sufficient. Full CVT replacement with Subaru remanufactured unit for complete failures. On 2010-2015 models, check 10-year/100,000-mile warranty extension eligibility first.
Sources for this issue (4)
- Rohnert Park Transmission: Subaru CVT Transmission Problems Complete Guidemedia
- Super Rupair: Subaru Lineartronic CVT Common Problemsmedia
- Motorverso: Subaru CVT Problems Common Transmission Reliability & Issuesmedia
- CarComplaints: Subaru CVT warranty extended to 10 years/100,000 miles (2010-2015 Legacy and Outback)media
The 2012+ Impreza's Lineartronic CVT (TR580 for 2.0L models) is prone to harsh engagement, delayed acceleration response, and premature failure. The smaller TR580 CVT handles the 2.0L engine but can develop valve body issues causing harsh shifts into Drive/Reverse and a pronounced thunk when engaging gear from Park. The CVT chain can stretch, and the transmission oil pump can fail. Subaru extended the CVT warranty to 10 years/100,000 miles on affected models.
Common Symptoms
- Harsh thunk when shifting from Park to Drive or Reverse
- Delayed acceleration from a stop (2-3 second lag)
- Shuddering at low speeds during light throttle
- Transmission warning light illuminated
- Metallic whining noise from transmission area
- Vehicle surging or bucking at highway speeds
How to Fix
Begin with CVT fluid drain and refill using genuine Subaru CVT fluid. Have dealer check for and apply all available TCM software updates. Valve body replacement resolves harsh engagement in many cases. For complete CVT failure, a remanufactured CVT from Subaru costs less than a new unit. Verify 10-year/100,000-mile CVT warranty coverage before paying out of pocket.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Sources for this issue (3)
P0868 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0868 mean on a Subaru?
P0868 stands for "Transmission Fluid Pressure Low." This code indicates the transmission's internal fluid pressure is reading lower than the computer expects for current operating conditions. The transmission control module uses a pressure sensor to monitor line pressure, which is what applies the clutches and bands that engage gears. When that pressure stays below the target threshold, P0868 sets. Low line pressure can cause slipping, harsh or delayed shifts, and in severe cases internal clutch damage, so it should be addressed promptly. On Subaru it is documented across 5 models: Outback, Ascent, Crosstrek, Legacy, Impreza.
What are the most common causes of P0868?
The most common causes of P0868 are: Low transmission fluid level, Worn or stuck-open pressure control solenoid, Internal leak (worn seals, gaskets, or valve body), Faulty transmission fluid pressure sensor, Clogged transmission filter, Failing transmission (oil) pump, Worn or leaking valve body, Wiring or connector fault to the pressure sensor/solenoid. The specific cause varies by vehicle.
How much does it cost to fix P0868 on a Subaru?
Published repair estimates on Subaru range from $200 to $9,000 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.