P1738 – TCC Solenoid Performance (Ford)

Description

P1738 Ford indicates the torque converter clutch solenoid is not performing correctly.

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Symptoms

  • Shuddering
  • Slipping
  • Limp mode

Causes

  • Failed TCC solenoid
  • Hydraulic pressure issue
  • Valve body fault

Diagnosis

  • Test solenoid resistance
  • Check pressure
  • Inspect valve body

Repair

  • Replace TCC solenoid
  • Repair valve body
  • Fix pressure faults