P1765 – TCM Power Relay Control Circuit (Ford)

Description

P1765 Ford indicates a fault in the TCM power relay control circuit.

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Symptoms

  • Limp mode
  • No shifting
  • Warning light on

Causes

  • Failed relay
  • Wiring fault
  • TCM issue

Diagnosis

  • Check relay control
  • Inspect wiring
  • Scan TCM

Repair

  • Replace relay
  • Repair wiring
  • Replace TCM if needed