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 ...

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 ...

[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 ...

An OBD2 (On-Board Diagnostics II) scanner can provide information about the status and health of various vehicular systems.

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

The OBD II system stores diagnostic trouble codes (DTCs) in the ECM. DTCs help identify which offending part, component or system causes the CEL to illuminate. You'll need a scan tool to read DTCs.