P0963 on 2019-2024 Subaru Ascent — Pressure Control Solenoid "A" Control Circuit High
1 vehicles · 1 makes · $1,500-$8,500 repair
How to diagnose and fix P0963: most-reported vehicles
Ranked by owner reports. Each card gives the symptoms, how to confirm the cause, the fix, parts and sources for that vehicle.
Subaru Ascent · 2019–2024
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.
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 valve body solenoid fault codes. 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 10-year/100,000-mile CVT warranty.
Sources for this issue (4)
Find P0963 by make
Browse every documented model and issue for your make.
P0963 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 P0963 mean?
P0963 stands for "Pressure Control Solenoid "A" Control Circuit High." This code sets when the transmission control module detects that the control circuit voltage for pressure control (line pressure) solenoid A is too high, indicating an open circuit or a short to voltage. This solenoid regulates transmission line pressure used to apply clutches and control shifts, so an electrical fault disrupts pressure control. Symptoms include harsh or slipping shifts, incorrect line pressure, or the transmission going into failsafe/limp mode. The cause is generally in the wiring or the solenoid itself.
What are the most common causes of P0963?
The most common causes of P0963 are: Open in the solenoid A control circuit, Short to voltage in the control circuit, Failed pressure control solenoid A (open coil), Damaged or corroded wiring or connector, Internal transmission harness fault, Low or contaminated transmission fluid, Faulty transmission control module (less common). The specific cause varies by vehicle.
How much does it cost to fix P0963?
Repair costs for P0963 range from $1,500 to $8,500, depending on the vehicle and root cause.
Which vehicles are affected by P0963?
Au7o has documented P0963 across 1 vehicle models from 1 manufacturers: Subaru.
Join 600+ people using Au7o to better understand their vehicles.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.