Torque Converter Clutch Circuit Intermittent
The TCC circuit drops in and out — intermittent open or short. Symptoms include erratic shudder at lock-up speeds and intermittent engine stalls when stopping.
Affected components
- Tcc solenoid
- Solenoid wiring
Common causes
- High likelihood: Intermittent wiring fault
- Medium likelihood: TCC solenoid failing
- Low likelihood: Connector with intermittent contact under vibration
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
- Reduced-power or limp mode may occur
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.