Torque Converter Clutch Pressure Control Solenoid Control Circuit / Open
The control line to the TCC pressure control solenoid is open. The solenoid cannot be driven so TCC lockup is unavailable.
Affected components
- Tcc pressure solenoid
- Wiring harness
Common causes
- High likelihood: Open solenoid coil
- Medium likelihood: Broken control wire
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.