Did your vehicle's check-engine light just pop on? An OBD-II scanner can provide some direction. We tested a handful to find ...

The second character identifies whether the fault code is a generic code or a manufacturer specific code. A generic code is the same on all OBD-II equipped vehicles no matter the manufacturer.

OBDII ports are standard on all cars from the 1996 model year on in the U.S. This allows anyone with a reader to plug in and read any trouble codes the car may be throwing.

Ancel AD310 OBDII Scanner Diagnostic Tool , The Ancel AD310 uses a small LCD screen to display OBDII codes., Tony Markovich Ancel AD310 OBDII Scanner Diagnostic Tool ...

Plus, it has a more straightforward and standard user operation, meaning it now uses the same OBD-II port, connector, and diagnostic trouble codes for all car makes.

What Does Code P0442 Mean? Engine code P0442 means a small leakage in the evaporative emission control system. It is not a critical problem, but it could be annoying and cause something more serious.

When your check engine light comes on, it can be tough to figure out why. Since the mid-'90s, though, most cars are made with OBD ports that make things easier.