P1739 – TCC Solenoid Stuck Off (Ford)

Description

P1739 Ford indicates the torque converter clutch solenoid is stuck in the off position.

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Symptoms

  • Shuddering
  • Slipping
  • Poor fuel economy

Causes

  • Stuck solenoid
  • Valve body issue
  • Low fluid

Diagnosis

  • Test solenoid movement
  • Inspect valve body
  • Check fluid

Repair

  • Replace TCC solenoid
  • Repair valve body
  • Refill fluid