What is OBD Connector?

On-board diagnostics (OBD) refers to automotive electronic systems that provide maintenance technicians with the ability to diagnose and report on the vehicle itself. OBD enables technicians to access subsystem information for performance monitoring and analysis of maintenance requirements.

OBD is the standard protocol used by most light duty vehicles to retrieve vehicle diagnostic information. The information is generated by the engine control unit (ECU or engine control module) in the vehicle. They are like the brains of cars or computers.

Where is the OBDII port located?

In a regular passenger car, you can find the OBDII port under the dashboard on the driver's side of the car. Depending on the type of vehicle, the port can be in a 16 pin, 6 pin, or 9 pin configuration 

What's the difference between OBD and OBDII?

Simply put, OBDII is the second generation OBD or OBDI. OBDI was originally externally connected to the car console, while OBDII is now integrated in the vehicle itself. The original OBD was used until OBDII was invented in the early 1990s.

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