How to use OBD2 Scanner Tool – Complete Guide

If you have a car, you might be familiar with the OBD2 Scanner. Nowadays the OBD2 scanner tool is considered as the 2nd version of a car or vehicle’s onboard diagnostics tool. However, This onboard diagnostic tool’s function is to monitor the car’s engine problems. So, whenever you think that there is a malfunction related to your engine, you should take an OBD2 scanner. Of course, you might know about how to use OBD2 scanner.

An OBD2 scanner is used for finding the vehicle’s engine problems. It results in some trouble codes.  That is to say, The owners of the vehicle just need to fix these problems for their safe journey. To Clarify, you cannot use an OBD2scanner into your car if the car was manufactured before 1996. Almost all vehicles after 1996 can interact with OBD-II diagnostic systems.

best OBD2 Scanner

Step by Step Guide How to use OBD2 Scanner

It requires only a few minutes to plug in the scanner and access the trouble codes. Below are some steps about how to use OBD2 scanner.

  1. At first, you have to ensure that your vehicle is turned off.
  2. Take the OBD2 scanner tool and you will find a Data Link Connector attached to.
  3. Above all, Check under the steering wheel, or down to your driver side. You will find a port or plug to connect the Data Link Connector. The Data Link Connector has a 16-pin plug. Now, connect the data connector.
  4. After connecting port with your scanner, sit on your driving seat; put your vehicle’s key, switch “ON” the ignition cylinder. Remember, some OBD-II scanners from the other brands need to turn on your vehicle’s engine and let it running for while to idle.
  5. Most Importantly, If your scanner has auto-active feature, then it will start after switching the ignition cylinder “ON”. If not, then press the start button of the device.
  6. Now press the “Scan” or “Read” button from the scanner to diagnose the system. Depending on the brand of the scanner, the button or menu switches may be different. However, always check the manual to know which button is to read or scan the system. The solution or code retrieval instructions have been located in the device’s handbook.
  7. Now read the codes or the problems from your scanner’s screen. Write these codes into a paper.
  8. Now find out the codes from the handbook that you got with the scanner. Normally, the appendixes of the trouble codes are located in the last part of the handbook. Most of the generic codes are common for all OBD2 compliant vehicles.
  9. Now, turn off the vehicle’s electrical system. Unplug the scanner from the cord of the vehicle. Finally, find out solutions to solve the problem.

Special Tips:

However, The functions of an OBD2 scanner differ from model to model. Some of them work only as a trouble code readers, some others can fix the problems by interacting with the vehicle’s sensors. So, you should read the manual of the scanner to use that perfectly.


Therefore, Accessing the trouble codes do not means that this will solve your engine problems. This will only tell about the problems that your vehicle’s engine is facing. In short, If you do not fix the problem, your scanner will always show the same result.

Final Words

Finally, we can tell out that scanning the vehicle’s engine problem is really now an easy thing by the help of the OBD2 scanner. You just need to know how to use OBD2 scanner.

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