OBD-II code · Powertrain (generic)
P0797 Pressure Control Solenoid C Stuck On
The TCM detects that pressure control solenoid C remains energized hydraulically despite commanded de-energization. Line pressure or shift quality deviates from target.
Is it safe to drive with P0797?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelySolenoid mechanically stuck
- PossibleValve body contamination
- Less likelyCarbon or debris buildup preventing free movement
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–8 h
- Emissions test
- Usually unaffected
- Parts involved
- Pressure Control Solenoid, Valve Body, Transmission Fluid
Related codes
- P0747Pressure Control Solenoid A Stuck On
- P0777Pressure Control Solenoid B Stuck On
- P08BCPressure Control Solenoid L Stuck On
- P08C5Pressure Control Solenoid M Stuck On
- P2715Pressure Control Solenoid D Stuck On
- P2724Pressure Control Solenoid E Stuck On
- P2733Pressure Control Solenoid F Stuck On
- P27BAPressure Control Solenoid N Stuck On
- P27C2Pressure Control Solenoid P Stuck On
- P27CAPressure Control Solenoid R Stuck On
- P27D2Pressure Control Solenoid S Stuck On
- P27DAPressure Control Solenoid T Stuck On
- P0794Intermediate Shaft Speed Sensor A Circuit Intermittent
- P0795Pressure Control Solenoid C
- P0796Pressure Control Solenoid C Performance
- P0798Pressure Control Solenoid C Electrical
- P0799Pressure Control Solenoid C Intermittent
- P079ATransmission Friction Element A Slip Detected
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.