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 best OBD-II scanners are a must for any car owner, thanks to their ability to unlock the secrets of your car. It doesn't matter how laid back you are, a mysterious light on your dashboard is ...

[Alex Sidorenko] has built an open source OBD-II Adapter which provides a serial interface using the ELM327 command set and supports all OBD-II standards. We featured [Alex]’s inexpensive PIC ...

OBD stands for On Board Diagnostics, and an OBD-II scanner can check on your vehicle's vital systems, providing valuable information about warning lights, airbags, ABS, and more. Due to the wide ...

In short, effective vehicle diagnosis combines mechanical knowledge, specialized tools, and a systematic approach to ...

Not Ready means the self-test cannot determine if it's working as it should. The OBD II system stores diagnostic trouble codes (DTCs) in the ECM. DTCs help identify which offending part, component or ...