P1405 – DPFE Sensor Upstream Hose Fault (Ford)

Description

P1405 Ford indicates the upstream DPFE hose is disconnected, leaking or blocked, affecting EGR flow measurement.

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Symptoms

  • Rough idle
  • Hesitation
  • High emissions

Causes

  • Disconnected hose
  • Clogged hose
  • Damaged DPFE ports

Diagnosis

  • Inspect DPFE hoses
  • Check vacuum routing
  • Test EGR flow

Repair

  • Reconnect hoses
  • Replace damaged hoses
  • Clean DPFE ports

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