P0744 – Torque Converter Clutch Circuit Intermittent

Description

The ECM detects an intermittent torque converter clutch circuit signal.

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Symptoms

  • Slipping
  • Overheating
  • Poor fuel economy

Causes

  • Loose connector
  • Faulty solenoid
  • Valve body issues

Diagnosis

  • Monitor TCC slip
  • Inspect wiring
  • Check solenoid

Repair

  • Repair wiring
  • Replace solenoid
  • Service valve body