P1448 – EVAP System Vent Control Stuck Closed (Ford)

Description

P1448 Ford indicates the EVAP vent control valve is stuck closed.

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Symptoms

  • Fuel smell
  • High emissions
  • Poor fuel economy

Causes

  • Stuck vent valve
  • Clogged vent filter
  • Wiring issues

Diagnosis

  • Inspect vent valve
  • Check filter
  • Test EVAP flow

Repair

  • Replace vent valve
  • Clean filter
  • Repair wiring

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