P1505 – Idle Air Control Valve Range/Performance (Nissan)

Description

The ECM detected an idle air control valve range/performance fault.

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Symptoms

  • High idle
  • Low idle

Causes

  • Valve sticking
  • Carbon buildup
  • Wiring issue

Diagnosis

  • Check valve movement
  • Inspect wiring
  • Scan idle data

Repair

  • Clean valve
  • Replace valve

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