I use a ViBecs Bluetooth OBD2 Scanner Adapter that connects via Bluetooth to my iPhone with the Car Scanner App to diagnose trouble codes on my View and delete Minivan Dodge. . It provides real-time status of all sensors including emission test status. Not only does this device ensure that all of your car's systems are working properly, it also allows me to ensure my car is roadworthy before sending it in for a smog check. Small and easy to store in the glove compartment, so always in the car.
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