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P1459 – EVAP System Purge Solenoid Stuck Open

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Symptoms

  • Rough idle
  • Hard starting
  • Fuel smell

Causes

  • Stuck solenoid
  • Vacuum leak
  • ECU issue

Diagnosis

  • Command solenoid
  • Inspect hoses
  • Scan ECU

Repair

  • Replace solenoid
  • Repair vacuum leaks
  • Update ECU
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