P1455 – EVAP Gross Leak Detected (Nissan)

Description

The ECM detected a large leak in the EVAP system.

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Symptoms

  • Check engine light
  • Fuel smell

Causes

  • Loose gas cap
  • Disconnected hose
  • Valve failure

Diagnosis

  • Inspect hoses
  • Check gas cap
  • Smoke test

Repair

  • Reconnect hoses
  • Replace valve