P2764 on Subaru
Torque Converter Clutch Pressure Control Solenoid Control Circuit Low
P2764 on Subaru vehicles indicates torque converter clutch pressure control solenoid control circuit low. Au7o has documented this code across 3 Subaru models — most commonly on Ascent, Crosstrek, Forester. 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. Typical repair costs on Subaru range from $200 to $8,500, depending on the specific model and root cause.
Common Causes of P2764
- •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
P2764 on Subaru by Model
Subaru Ascent(1 issue)
- CVT Valve Body Failure and Transmission Warning2019-2024
The Ascent's TR730 high-torque CVT develops valve body failures that cause erratic shifting, harsh engagement, and transmission warning lights. The valve body controls hydraulic pressure to the CVT pulleys and chain, and when solenoids or passages within it fail, the transmission cannot maintain proper ratio control. This issue is distinct from the CVT hesitation TSB and represents a hardware failure rather than a calibration issue.
Subaru Crosstrek(1 issue)
- CVT Chain Stretch and Transmission Judder2013-2021
The Lineartronic CVT (TR690) 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 addressed earlier models under warranty extension WTY-72 (10 years/100,000 miles) and released multiple software calibration updates. In severe cases, the CVT requires complete replacement.
Subaru Forester(1 issue)
- CVT Torque Converter Lock-Up Clutch Solenoid Failure — P2764, Flashing AT OIL TEMP Light2014-2018
Separate from the well-known belt/chain judder, the TR580 CVT in the SJ-generation Forester suffers electrical failures in the torque converter lock-up circuit. The lock-up clutch solenoid (and its harness) degrades, so the converter clutch cannot be commanded cleanly. The signature is not a smooth shudder but a hard bucking or stumble on light throttle at lock-up speeds, a check engine light with P2764 (or related P0741/P2762 codes), and a flashing AT OIL TEMP warning that puts the transmission into a limp mode. Subaru acknowledged lock-up torque converter behavior in a design change (bulletin 16-90-13R) and rolled CVT coverage into the extended-warranty bulletin 16-107-17, which extends CVT coverage to 10 years/100,000 miles for covered concerns on 2014-2018 Foresters.
Looking for P2764 on a different make?
View P2764 across all makes →Frequently Asked Questions
What does P2764 mean on 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 specifically, this code is documented across 3 models.
What causes P2764 on Subaru vehicles?▼
Common causes on Subaru: 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. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P2764 on a Subaru?▼
Repair costs on Subaru range from $200 to $8,500, depending on the specific model and root cause.
Which Subaru models have P2764 documented?▼
Au7o has documented P2764 on 3 Subaru models: Ascent, Crosstrek, Forester.