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Autel OBD2 Scanner

How To Use OBD2 Scanner?

An OBD2 scanner can help you or your mechanic know if your car is in good condition. Use an OBD2 scanner to quickly detect and diagnose fault codes and problems with your vehicle. Here, we will explain how to use OBD2 scanner?

To use an OBD2 scanner follow these few steps:

1. Determine vehicle compatibility:

Make sure your vehicle supports the OBD II standard. Almost all cars produced after 1996 have adopted the OBD2 interface.

2. Locate the OBD2 interface:

Find the location of the OBD2 interface in your vehicle. Typically, this interface is located near the dashboard under the driver's seat. You can refer to your vehicle's owner's manual or search the internet for the location of the OBD2 interface for your specific model.

3. Connect the scanner to the OBD2 interface:

Plug the cable of the OBD2 scanner into the OBD II interface of the vehicle. This is usually a 16-pin connector, the plug can only be inserted one way, this supports cable or Bluetooth VCI.

4. Power on the vehicle:

After the scanner is connected, turn on the vehicle's ignition, but do not start the engine. This will provide the required power for vehicle detection.

5. Operate the scanner:

According to the specific brand and model of the scanner you are using, follow its operating instructions. Typically, you can view the vehicle's fault codes, sensor data, and other diagnostic information on the screen by navigating through the scanner's menus. You can also clear trouble codes, perform system tests, and more.

6. Look up the fault code:

If the scanner detects a fault code, you can look up the fault code's meaning and solution in resources such as the scanner manual, on the Internet, or using an app. This will help you understand what is wrong with your vehicle and what repairs may be required.

Identify and understand OBD codes

Each trouble code for a scanner usually begins with a letter followed by a set of four digits.

The letters in a DTC can be:

P (Powertrain): Indicates problems with the engine, transmission, ignition, emissions, and fuel systems

B (Body): Point out problems with airbags, power steering, and seat belts

C (Chassis): Indicates problems with the axles, brake fluid, and ABS

U (Undefined): Highlight questions that do not fall into categories P, B, and C

The first number after the letter will tell you if the DTC is generic (0) or manufacturer specific (1)

The second number refers to the specific vehicle part

The last two digits tell you the exact question

7. Reset check

An OBD2 scanner or OBD II code reader can tell you what's wrong with your car, determine the error code how to solve it, DIY method or professional help, and then do a fault code erasure. You can always reset the car engine light options to check if the problem persists without making sure if the problem is fixed or not.


Learning to use the OBD II scanner is very simple, the OBD 2 scanner can serve DIY enthusiasts, car maintenance personnel, basic OBD2 code diagnosis for Bluetooth scanners, built-in scanners, or wired handheld scanners, Repairing vehicle problems requires the involvement of professionals. Enable OBD2 scanner to prepare your vehicle for repair and maintenance.

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