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What Does P0492 Code Mean?

    OBD-II Code P0492 is defined as a Secondary Air Injection System Insufficient Flow

    The Secondary Air Injection System pumps outside fresh air into the Exhaust System during cold engine start up. This additional air helps burn up the highly rich exhaust emissions that are produced when the engine is warming up. The Secondary Air System typically has an Air Pump and some tubes or plumbing to route the air. The system also has a solenoid and Check Valve(s) to control the airflow. When the engine control module (PCM) detects a faulty with the Secondary Air Injection System, it will set code P0492.

    Common Problems That Trigger the P0492 Code

    • Clogged or disconnected vacuum hose
    • Powertrain Control Module (PCM) failure
    • Secondary air pump control valve failure
    • Secondary air pump failure
    • Wiring issue

    Common Repairs Needed for the P0492 Code

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