P1428 – EVAP System Excessive Pressure (Ford)

Description

P1428 Ford indicates excessive pressure has been detected in the EVAP system.

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Symptoms

  • Fuel smell
  • Poor fuel economy
  • Check engine light

Causes

  • Blocked vent valve
  • Clogged canister
  • Tank pressure fault

Diagnosis

  • Inspect vent valve
  • Test canister
  • Check tank pressure

Repair

  • Replace vent valve
  • Replace canister
  • Repair pressure faults