P1449 – EVAP Canister Overload / Saturation (Nissan)

Description

The ECM detected an overloaded or saturated EVAP canister.

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Symptoms

  • Fuel smell
  • High emissions

Causes

  • Fuel saturation
  • Canister failure
  • Vent issue

Diagnosis

  • Inspect canister
  • Check vent lines
  • Scan EVAP data

Repair

  • Replace canister
  • Repair vent

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