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.
Affected components
- Pressure control solenoid
- Valve body
- Transmission fluid
Common causes
- High likelihood: Solenoid mechanically stuck
- Medium likelihood: Valve body contamination
- Low likelihood: Carbon or debris buildup preventing free movement
Possible 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
Diagnostic notes
- The malfunction indicator lamp may illuminate
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.