P2757
Torque Converter Clutch Pressure Control Solenoid Control Circuit Performance/Stuck Off
The TCC pressure control solenoid is commanded on but does not produce the expected lockup pressure. TCC stays open or partially engaged.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
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
Common causes
Ordered by how often each turns out to be the cause.
- Solenoid spool stuck in closed positionCommon
- Hydraulic feed restricted by debrisPossible
- Carbon or debris buildup preventing free movementLess likely
Parts involved
- TCC Pressure Solenoid
- Torque Converter
P2757 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.