Have your owner’s manual handy. Place your vehicle in “park,” or “neutral” for a manual transmission. Firmly set the parking brake. Download and install the manufacturer’s code reader app to your ...

How iPhone turns the Camera app into a code reader On iPhone, the built in Camera app is the primary gateway to this hidden scanner. When you open Camera on your iPhone and point it at a QR code, the ...

Spark plug wear hides in plain sight. It builds slowly, then suddenly the engine starts telling a different story. A code reader might flag a misfire or throw a generic warning, but spark plug wear ...

Companies are scrambling to deal with the glut. Credit...Mojo Wang Supported by By Mike Isaac and Erin Griffith Reporting from San Francisco When a financial services company recently began using ...