P1728 – Torque Converter Clutch Slip (Ford)

Description

P1728 Ford indicates excessive torque converter clutch slip has been detected.

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Symptoms

  • Shuddering
  • Slipping
  • Poor fuel economy

Causes

  • Worn torque converter
  • Low fluid
  • Valve body issue

Diagnosis

  • Check TCC slip
  • Inspect fluid
  • Test hydraulic pressure

Repair

  • Replace torque converter
  • Refill fluid
  • Repair valve body

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