What Does A Bidirectional Scan Tool Do? Reviews and FAQs

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Suppose you’re going on a romantic ride with your girlfriend. But, it doesn’t last long as some awkward sounds are coming off from your car’s engine. So, you have to come out of the car and check it thoroughly. However, you’re not finding the place where these sounds are coming! 

Then, you have no way but to take the car to a car mechanic. A mechanic will most likely use an automotive diagnostic tool to discover the problem. Hence, it won’t take so long for a professional to where these sounds are coming from the car’s engine. 

But, what’s the tool? Well, it’s a bidirectional scan tool. Here, we will discuss this topic thoroughly. 

What Does a Bidirectional Scan Tool do?

What is Bidirectional Control on a Scan Tool

Bidirectional control on a scan tool refers to the ability of the scan tool to control some functions of the vehicle being diagnosed. Besides, the processes include things like opening and closing doors, starting and stopping the engine, and activating and deactivating specific systems. 

Furthermore, this helps a professional person test the vehicle’s exact functions without being present in the vehicle physically. This is how they can save time. Moreover, this can be a valuable tool for diagnosing definite problems.

What is a bi-directional Scan Tool?

A bi-directional scan tool is a device that can be used to diagnose and repair vehicles. It is a handheld device connected to the vehicle’s diagnostic port. 

Further, this device can read and clear diagnostic trouble codes, access the engine control module, view lives data streams, etc. It can also perform various tests and repairs to a vehicle. In addition, it is much different than traditional scanners. 

A bi-directional scan tool is crucial for any auto part store or professional mechanic. It can be used to check out and reconstruct various vehicle problems. Hence, it is one of the significant products for a technician. They can easily add it to their toolkit. 

Besides, it is an economic tool that can save you time and money by avoiding costly trips to the dealership. This equipment is excellent when it comes to saving money. 

How Does This Help Me?

It helps identify the real problem and track the area that needs improvement. 

What Does a Bidirectional Scan Tool Do?

A bidirectional scan tool is a device that can be used to detect and service vehicle issues. It is a machine that can read and clear diagnostic trouble codes. Hence, a bidirectional scan tool can perfectly deliver live data streams from the vehicle’s computer. 

Further, it can successfully send outputs to test other modules of your car that include – Anti-lock Braking System, temperature sensor, transmission function, engine function, battery situation, oxygen, air pressure, etc. 

After completing tests of all these modules, the scanner will notify you that no problems have been found. But, if they find a problem, they will show you an error code. 

On the other hand, most modern scanners can notify you about a possible car engine failure in the near future. So, you can take the demanded measures to prevent it.  

But, one thing you should keep in mind – these scan tools won’t solve the problem. They can only inform you about it. 

How Does it Work?

Bi-directional control is a type of feedback control where the controller sends information to the controlled system. After that, the controlled system sends information back to the controller. 

This feedback loop allows the two systems to communicate with each other. Hence, it ensures that the controlled system does what the controller wants it to do.

Furthermore, the most common type of bi-directional control is PID (proportional-integral-derivative) control. In PID control, the controller constantly calculates the error between the desired and the actual outcome of the controlled system. 

After that, it adjusts the input accordingly in order to try to vanish the error.

One advantage of bi-directional control is that it can help to prevent overshoot and oscillations. Moreover, this happens because the feedback loop allows the controller to see how the system responds to its input. Thus, it can make adjustments accordingly.

Controlling a vehicle’s functions through an external resource is such a tremendous advantage. It can significantly change the working style of a workshop. In addition, this procedure can raise productivity and decrease the chance of errors. 

Benefits of a Bidirectional Tool

Bidirectional tools offer many advantages over traditional tools. Here, we will discuss some remarkable benefits of a bidirectional tool. Let’s check – 


Bidirectional tools are highly versatile because they can be used for a variety of tasks. For example, a bidirectional drill can drill holes, drive screws, and even sandpaper surfaces. 

This versatility is a significant advantage over traditional tools, which are often designed for only one specific task.


Bidirectional tools are very efficient. Since they are capable of doing various tasks at once, they can save your time and effort. For example, a bidirectional drill can drill holes faster than a traditional drill. The reason is they be used in both directions. 

Additionally, you don’t have to stop and reverse the drill every time you reach the end of the hole.


You will get utter comfort while using a bidirectional tool. Besides, you don’t need too much effort in using them. So, this is a clear indicator that you can work for more extended periods without getting tired.

Easy Readability Diagram

The bidirectional tool is equipped with the most modern technology. This is why you can see the latest info on its display. Hence, this device can provide colorful information. They can also visualize graphics and charts

To make everything easy, download the software that comes with the tool. You can check it out from any place you want. 

Finding Problem Characteristic

Usually, there are two kinds of problems your vehicle will face. They are – continuous or intermittent. The scanner can successfully show it after a short diagnosis. Further, this device can assist you in finding out several reasons for intermittent problems. 

Using the Bi-Directional Scan Tool

Have you worked for a car ever? If yes, then you might know that there are various tools you need to do the job right. One of the essential tools that you need is a bi-directional scan tool. 

These gadgets are essential because it allows you to communicate with the car’s computer. Without this tool, you will fail to correctly monitor and find out the problem. 

The bi-directional scan tool is straightforward to use. Here are some steps we will share with you to make your job convenient. Let’s check the steps – 

Step 1 – Firstly, plug the Bi-Directional OBD2 Scanner into the car. Now, please turn it on. This is how the device will automatically connect and read the CEL. 

Step 2 – After completing step 1, you will be able to access the information on your Bi-Directional OBD2 Scanner. All you need to do is navigate over the menu to do it perfectly. 


What is bidirectional control means on a scan tool?

Bidirectional control allows the scan tool to communicate with the vehicle’s computer. Thus, it can conduct various diagnostics and tests of the engine. It can also reprogram the computer’s control system if necessary. 

Should I purchase a bidirectional tool?

The answer is definitely yes. You can conveniently check the engine’s problem through it. Besides, it can perform tasks very quickly. So, your time and energy will be saved. The technicians must use this device to raise their productivity. 

Final Thought About Bidirectional Scan

So, are you satisfied to read the article? We think that after reading this, you will earn enough knowledge on “what does a bidirectional scan tool do?”. This is a unique and user-oriented appliance that can rescue money and energy. Besides, these tools are highly efficient. 

So, do you have any questions regarding our article? If yes, share it in the box below.

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