View ALL Hyundai Sonata Parts
If your Hyundai Sonata Air Flow Meter keeps failing the issue is most likely to much oil on a Hyundai performance air filter, or to much blow by from the Sonata engine.
Use only Hyundai OE quality replacement Catalytic Converters to keek your Hyundai Sonata in the best running condition. DriveWire sells only California legal Sonata OBD-II Converters.
If your Hyundai Sonata failed the emissions test due to high NOX, the EGR Valve is most likely the issue. If your Hyundai is running rough or has poor fuel mileage, replace the Sonata EGR Valve and gasket.
The Hyundai Sonata 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 Hyundai Sonata diagnosics codes for proper replacement of the O2 Sensor.