Powertrain
generic / SAE
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.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number7 / 97
Possible causes
- Solenoid mechanically stuck high
- Valve body contamination medium
- Carbon or debris buildup preventing free movement low
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
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 400–2500 €
- Estimated time: 2–8 h
- Component: pressure control solenoid
- Component: valve body
- Component: transmission fluid
- MIL / check engine light
Sources
References
sae:J2012