Pressure Control Solenoid C Performance/Stuck Off
What it means
P0796 means pressure control solenoid C isn't performing as commanded, or is stuck in the off (non-applying) position. This solenoid regulates the hydraulic line pressure that engages gears, so a fault causes harsh or delayed shifting, slipping, or limp mode. The engine still runs — the problem is in the transmission, commonly a stuck solenoid, dirty fluid, or a sticking valve body.
Can I keep driving? Usually driveable, but the pressure control solenoid isn't regulating properly — expect harsh shifting, slipping, or limp mode, and repair it soon to protect the transmission.
Common symptoms
What you'll notice
- Check-engine light on
- Harsh or delayed shifting
- Transmission slipping or failing to shift
- Limp mode (reduced gear range)
- Reduced fuel economy
Common causes
Most likely first
- Faulty pressure control solenoid C (stuck or worn)Likely
- Low or dirty transmission fluid restricting the solenoidCommon
- Open or shorted wiring in the solenoid C circuitCommon
- Sticking or worn valve bodyLess often
- Faulty transmission control module (TCM)Less often
How to diagnose & fix
Work through it in order
- Check transmission fluid level and condition first — service it if low, burnt, or dirty.
- Read freeze-frame data and scan for related pressure/shift-solenoid codes.
- Inspect the solenoid C wiring and connector for damage or corrosion.
- Test the pressure control solenoid C and inspect the valve body for sticking.
- If fluid and electrics are good, verify TCM operation.
FAQ
Quick answers
Is it safe to drive with P0796?+
Can I just clear P0796?+
Related codes
Often seen with P0796
Read & clear P0796 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.