What Causes Low Airflow from Car Air Conditioning Vents?

[Luis]

Here are the specific reasons for low airflow from car air conditioning vents: 1. Blocked or leaking vents: If the dashboard vents are blocked, clean them; if the air ducts of the dashboard vents are leaking, inspect and repair them, replacing if necessary. 2. Airflow direction control failure: If the airflow direction control motor is abnormal, inspect and repair the airflow direction control mechanism. 3. Blower fan failure: If the blower fan speed is low, inspect the wiring and the blower motor, replacing if necessary; if the blower fan speed control module is abnormal, replace it. 4. Air conditioning pipeline or control module failure: If the air conditioning pipeline is frozen, replace the refrigerant according to the manufacturer's standards or replace the expansion valve; if the air conditioning control module is abnormal, inspect its wiring and replace the module if necessary.