P1481 – Secondary Air Injection Pump Overcurrent (Nissan)

Description

The ECM detected an overcurrent condition in the SAI pump.

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Symptoms

  • Rough idle
  • Poor drivability

Causes

  • Pump failure
  • Electrical short
  • Relay issue

Diagnosis

  • Check pump current
  • Inspect wiring
  • Test relay

Repair

  • Replace pump
  • Repair wiring