P0776 on Buick
Pressure Control Solenoid B Performance/Stuck Off
P0776 on Buick vehicles indicates pressure control solenoid b performance/stuck off. Au7o has documented this code across 1 Buick model — most commonly on Enclave. This code means the transmission's Pressure Control Solenoid B is not performing correctly and is behaving as if stuck in the 'off' position. Pressure control solenoids regulate the hydraulic fluid pressure used to apply clutches and bands and to control shift quality, so when one underperforms the transmission may shift harshly, slip, flare between gears, or feel inconsistent. The transmission control module sets this code when the fluid pressure or response it measures doesn't match what it commanded from that solenoid. It generally indicates a hydraulic performance issue with the solenoid or its fluid circuit rather than just a wiring fault.
Common Causes of P0776
- •Stuck or failed pressure control solenoid B
- •Low, dirty, or degraded transmission fluid
- •Clogged solenoid screen or valve body passages
- •Sticking or worn valve body components
- •Wiring or connector problem at the solenoid
- •Internal transmission wear or pressure loss
- •Faulty transmission control module
P0776 on Buick by Model
Buick Enclave(1 issue)
- 3-5-Reverse Clutch Wave Plate Can Fracture (Special Coverage 14404)2008-2009
GM identifies some 2008-2009 Buick Enclave vehicles equipped with a 6T70/6T75 six-speed automatic transmission in which the 3-5-reverse clutch wave plate can crack or fracture. The documented result is loss of reverse, 3rd and 5th gears; drivers may also notice slip, flare or harsh shifts and a check-engine light.
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View P0776 across all makes →Frequently Asked Questions
What does P0776 mean on Buick?▼
P0776 stands for "Pressure Control Solenoid B Performance/Stuck Off." This code means the transmission's Pressure Control Solenoid B is not performing correctly and is behaving as if stuck in the 'off' position. Pressure control solenoids regulate the hydraulic fluid pressure used to apply clutches and bands and to control shift quality, so when one underperforms the transmission may shift harshly, slip, flare between gears, or feel inconsistent. The transmission control module sets this code when the fluid pressure or response it measures doesn't match what it commanded from that solenoid. It generally indicates a hydraulic performance issue with the solenoid or its fluid circuit rather than just a wiring fault. On Buick specifically, this code is documented across 1 model.
What causes P0776 on Buick vehicles?▼
Common causes on Buick: Stuck or failed pressure control solenoid B, Low, dirty, or degraded transmission fluid, Clogged solenoid screen or valve body passages, Sticking or worn valve body components, Wiring or connector problem at the solenoid. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0776 on a Buick?▼
Repair costs vary widely depending on the root cause and specific Buick model.
Which Buick models have P0776 documented?▼
Au7o has documented P0776 on 1 Buick model: Enclave.