P1439 – Secondary Air Injection Pump Fault (Nissan)

Description

The ECM detected a malfunction in the secondary air injection pump.

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Symptoms

  • High emissions
  • Poor drivability

Causes

  • Pump failure
  • Wiring issue
  • Relay fault

Diagnosis

  • Check pump voltage
  • Inspect wiring
  • Test relay

Repair

  • Replace pump
  • Repair wiring