P1484 – Secondary Air Injection System Temperature Fault (Nissan)

Description

The ECM detected an abnormal temperature condition in the SAI system.

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Symptoms

  • Poor drivability
  • Hesitation

Causes

  • Sensor failure
  • Overheating
  • Wiring issue

Diagnosis

  • Check temperature sensor
  • Inspect wiring
  • Scan SAI data

Repair

  • Replace sensor
  • Repair wiring