I need to see the service manual specifically for your car.
You may really have low air flow volume, or you may have a sensor that is telling you that you have low air flow volume. The air goes through the throttle body, and the sensor is located there.
This could be caused by a restriction somewhere in the system, such as a dirty air fliter or a plugged screen. It could also be caused by a dirty throttle body or a dirty/bad idle air control valve. It could also be caused by a bad mass airflow sensor.
That'* why I need to know exactly what triggers that code.
1999 540iA Sport
Former 93 SSEi Owner
Former 89 SE Owner