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OBD2(Onboard Diagnostics II) is a diagnostic system included in every vehicle produced after 1996. It is used to check the engine and other systems and communicate all the possible glitches that happen to them. During this process, an OBD2 scanner is needed.

What are OBD2 scanners?

Generally speaking, OBD2 scanners are the devices that users plug into their cars to read the trouble codes and live data. Being the improved version of the OBD1 scanner, they have many forms, ranging from tiny boxes to large devices connected to the OBD2 port by a wire. OBD readers usually come in a compact form, commonly in a no-frills design that incorporates an LCD screen and several buttons to operate the device. OBD2 code readers are simple devices that allow users to reset the check engine light and not much else. In comparison, car scanners provide greater access to cars' diagnostic data, features, and systems. Originally designed for professional mechanics, many consumer-level car code scanners also belong to this category. These car scanner tools can offer additional features like monitoring live data, repair cost estimates, maintenance schedules, tracking, etc.

There are many levels of car scanner tools available, ranging from ones that are affordable and easy to use to professional ones that are much more powerful. Some manufacturers add unique codes to their vehicles, which a simple car code reader may not be able to see. Moreover, as technology keeps improving, users can operate a Bluetooth OBD2 scanner through their smartphone or tablet.

How does an OBD2 scanner work

A scanner plugs into a car's OBD2 port, usually located beneath the dash on the driver's side, and connects to the computer controlling the engine and other systems. With the ignition on, the scanner can read and clear diagnostic trouble codes, monitor engine and sensor data, reset the check engine light, customize the car's features, etc.

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