Torque Converter Clutch Circuit Malfunction

What This Means

The torque converter clutch (TCC) solenoid circuit has a malfunction. The TCC locks the torque converter at highway speeds to improve fuel economy by creating a direct mechanical connection.

Common Symptoms

• Decreased highway fuel economy
• Engine stalls when coming to a stop
• Slight shudder at highway speeds
• Check engine light on

Common Causes

• Faulty TCC solenoid
• Wiring issue to the solenoid
• Contaminated transmission fluid
• Internal torque converter failure
• PCM driver circuit issue

Estimated Repair Cost