P0776: Pressure Control Solenoid B Performance/Stuck Off
8 vehicles · 6 makes · $150-$6,500 repair
Most Reported On
P0776 is an OBD-II diagnostic trouble code meaning “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. This code is most commonly reported on 2005-2011 Cadillac STS, 2008-2017 Opel Insignia (Edition, Cosmo, Sport, OPC, Country Tourer), and 2021-2025 Cadillac Escalade ESV, plus 5 other vehicles, with repair costs ranging from $150 to $6,500.
Common Causes
Typical Repair Cost
Based on 8 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P0776, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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Vehicles Affected (8)
FAQ
What does P0776 mean?
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.
What are the most common causes of P0776?
The most common causes of P0776 are: 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. The specific cause varies by vehicle.
How much does it cost to fix P0776?
Repair costs for P0776 range from $150 to $6,500, depending on the vehicle and root cause.
Which vehicles are affected by P0776?
Au7o has documented P0776 across 8 vehicle models from 6 manufacturers: Buick, Cadillac, Chevrolet, Ford, Nissan, Opel.
Sources (11)
- TSBGM TSB/Service Information for 10-speed harsh shift and valve body concerns
- ForumCadillac owners forum discussions on 2021+ Escalade transmission harsh shifting
- articleChevy Equinox Transmission Problems & Cost | 6T70 / 6T45 (Transmission Repair Cost Guide)
- ForumTrans shudder? (TerrainForum)
- NHTSAChevrolet Equinox Transmission Slip Out Of Gear Problems (CarProblemZoo / NHTSA complaints)
- ForumTransmission 'bump' aka 'hard shifting' TSB - Ford Explorer Forums
- articleFord Explorer Transmission Problems: Shift Flare, Converter Shudder & CDF Drum Failure - Cherish Your Car
- articleFord Explorer Transmission Problems & Cost (6F50/6F55) - TransmissionRepairCostGuide
- articleBuick Enclave Transmission Problems: Known Failures and Fixes - Cherish Your Car
- articleBuick Enclave Transmission Problems & Cost (6T75E) - Transmission Repair Cost Guide
- ForumGeneral Info on the 6T75 Transmission - EnclaveForum.net
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.