P1440 – EVAP Small Leak Detected (Nissan)

Description

The ECM detected a small leak in the EVAP system.

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Symptoms

  • Check engine light
  • Fuel smell

Causes

  • Loose gas cap
  • Small hose leak
  • Valve issue

Diagnosis

  • Inspect hoses
  • Check gas cap
  • Scan EVAP data

Repair

  • Tighten cap
  • Repair hoses