Torque Converter Clutch Pressure Control Solenoid Control Circuit Intermittent
The TCC pressure control solenoid shows intermittent electrical or hydraulic faults. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Affected components
- Tcc pressure solenoid
- Wiring harness
Common causes
- High likelihood: Solenoid connector not fully seated
- Medium likelihood: Coil resistance drifts with temperature
- 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
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.