P2764 on Subaru: How to Diagnose & Fix
Torque Converter Clutch Pressure Control Solenoid Control Circuit Low
2 Subaru models · 2 documented issues · 2 critical · $200-$8,500 repair
P2764 on Subaru by model: symptoms, diagnosis and fix
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 Ascent's TR690 high-torque CVT develops valve body faults that cause erratic shifting, harsh engagement, and transmission warning lights. The valve body controls hydraulic pressure to the CVT pulleys and chain; on these units the line pressure sensor O-ring in the valve body can leak, causing abnormal pressure readings (DTC P0841/P0842), and the transmission cannot maintain proper ratio control. This is a hardware failure rather than a calibration issue.
Common Symptoms
- Transmission warning light illuminated
- Harsh thud when shifting from Park to Drive
- CVT slipping or flaring RPMs under load
- Shuddering at highway speeds
- Vehicle going into limp mode (limited to low speeds)
- Burning fluid smell
How to Fix
Diagnose with dealer scan tool to confirm P0841/P0842 line pressure sensor faults; Subaru TSB 16-157-26 directs technicians to the enhanced P0841 diagnostic tree and supplies a redesigned valve body (31706AA164 for 2019-23, 31706AA253 for 2024-25) with an improved sensor O-ring. Valve body replacement resolves the issue in most cases — this is a less expensive repair than full CVT replacement. If the CVT has been operated with a failed valve body for an extended period, internal damage may necessitate full CVT replacement. Covered under Subaru's powertrain warranty (5yr/60k) or applicable emission warranty when in period.
Sources for this issue (3)
P2764 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 P2764 mean on a Subaru?
P2764 stands for "Torque Converter Clutch Pressure Control Solenoid Control Circuit Low." This code means the powertrain or transmission control module detected a low-voltage condition in the control circuit for the torque converter clutch (TCC) pressure control solenoid. This solenoid regulates the hydraulic pressure that locks and unlocks the torque converter clutch for fuel efficiency. A low circuit fault can prevent proper clutch engagement, causing harsh or erratic shifting, slipping, stalling, or transmission overheating. The cause is most often electrical but can involve the solenoid or fluid condition. On Subaru it is documented across 2 models: Crosstrek, Ascent.
What are the most common causes of P2764?
The most common causes of P2764 are: Faulty TCC pressure control solenoid, Damaged or corroded wiring/connectors in the circuit, Short to ground in the control circuit, Low or contaminated transmission fluid, Valve body issues, Poor ground or power supply, Faulty PCM/TCM. The specific cause varies by vehicle.
How much does it cost to fix P2764 on a Subaru?
Published repair estimates on Subaru range from $200 to $8,500 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.