P0796: Pressure Control Solenoid 'C' Performance or Stuck Off
4 vehicles · 3 makes · $150-$4,500 repair
Most Reported On
P0796 is an OBD-II diagnostic trouble code meaning “Pressure Control Solenoid 'C' Performance or Stuck Off.” This generic transmission code means the TCM/PCM detected that pressure control solenoid 'C' is not regulating hydraulic pressure as expected, or appears stuck in the off position. These solenoids control the line pressure that applies the transmission's clutch packs to achieve the correct gear ratios, so a performance fault here disrupts shift quality. Symptoms can include harsh or delayed shifts, slipping, or limp mode, and continued driving can accelerate transmission wear. This code is most commonly reported on 2018-2025 Chevrolet Traverse, 2008-2012 Buick Enclave, and 2022-2023 Toyota Land Cruiser, plus 1 other vehicle, with repair costs ranging from $150 to $4,500.
Common Causes
Typical Repair Cost
Based on 4 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P0796, 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 (4)
FAQ
What does P0796 mean?
P0796 stands for "Pressure Control Solenoid 'C' Performance or Stuck Off." This generic transmission code means the TCM/PCM detected that pressure control solenoid 'C' is not regulating hydraulic pressure as expected, or appears stuck in the off position. These solenoids control the line pressure that applies the transmission's clutch packs to achieve the correct gear ratios, so a performance fault here disrupts shift quality. Symptoms can include harsh or delayed shifts, slipping, or limp mode, and continued driving can accelerate transmission wear.
What are the most common causes of P0796?
The most common causes of P0796 are: Faulty pressure control solenoid C, Low, dirty, or degraded transmission fluid, Blocked or restricted valve body fluid passages, Damaged wiring or connector to the solenoid, Worn valve body or stuck valve, Internal transmission mechanical wear, Faulty TCM/PCM (rare). The specific cause varies by vehicle.
How much does it cost to fix P0796?
Repair costs for P0796 range from $150 to $4,500, depending on the vehicle and root cause.
Which vehicles are affected by P0796?
Au7o has documented P0796 across 4 vehicle models from 3 manufacturers: Buick, Chevrolet, Toyota.
Sources (7)
- ForumReddit r/MechanicAdvice Thread Discussing 9T65 Transmission Shudder on Chevrolet Traverse
- 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
- ForumOwner discussions on 300-series Land Cruiser low-speed shift hesitation and calibration updates
- Forum2-3 Shift Flare on 6L80E - Camaro5 Chevy Camaro Forum
- articleChevy Camaro Transmission Problems & Cost (6L80/6L90)
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.