Torque Converter Clutch Pressure Control Solenoid
A general fault in the torque converter clutch (TCC) pressure control solenoid. Lockup feel and slip control are degraded.
Affected components
- Tcc pressure solenoid
- Torque converter
Common causes
- High likelihood: Aged solenoid coil resistance drift
- Medium likelihood: Worn valve body bore around the solenoid
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
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.