If your Mazda MPV Air Flow Meter keeps failing the issue is most likely to much oil on a Mazda performance air filter, or to much blow by from the MPV engine.
Use only Mazda OE quality replacement Catalytic Converters to keek your Mazda MPV in the best running condition. DriveWire sells only California legal MPV OBD-II Converters.
The Mazda MPV Oxygen sensor is a critical part of the emmision control system and should be replaced as soon as it fails. Make sure to check the Mazda MPV diagnosics codes for proper replacement of the O2 Sensor.