P1727 – Engine Torque Signal Fault (Ford)

Description

P1727 Ford indicates the transmission received an invalid engine torque signal.

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Symptoms

  • Harsh shifting
  • Limp mode
  • Poor acceleration

Causes

  • PCM fault
  • Wiring issue
  • CAN communication error

Diagnosis

  • Check torque signal
  • Inspect wiring
  • Scan PCM and TCM

Repair

  • Repair wiring
  • Fix CAN faults
  • Replace PCM if needed