What are Bi-Directional Scanners?

How often have you heard the phrase 'bi-directional' when your searching for a scan tool? Quite a lot right? All this technical jargon can make it pretty confusing if it is your first time looking to purchase a scanner. Fortunately, we've made a list clarifying common terms so that you can get the most out of your purchase!

So, what is bi-directional control?

Bi-Directional controls are often referred to as actuation tests, function testing, and system tests. This is where both devices (that is, the scan tool and the ECU) send and receive information. This is what sets bi-directional scanners apart from regular OBD2 scanners. You see, regular scanners only have the capacity to retrieve data from the vehicle's ECU. Bi-directional scan tools allow for commands as well.

What are the benefits of bi-directional controls?

Bi-directional controls introduce an entirely new configuration of options that can streamline diagnostic procedures without even needing to physically inspect components. Bi-directional controls allow the user to actuate components from the scanner to test their operation. For example, you can activate and deactivate thermofans, the fuel pump, and many ECU-controlled devices to inspect for correct operation. This functionality promotes rapid and accurate diagnostic procedures.

Do you need a bi-directional scanner?

Bi-directional scanners are a must-have for any professional workshop or even hard-core enthusiasts. The ability to receive information and perform commands is a hugely important tool that will accelerate results. 

However, if you are new to the trade and only looking to read codes or analyse data, then a generic OBD2 scanner may be right for you. 

Generic scanners come at a lower price but can only provide limited functionality. Scan tools equipped with bi-directional controls are without a doubt the better option, but they will come at a higher cost. When you are choosing a scan tool it is important to weigh up what your requirements are. You can search through our mid-range and professional scan tools to see which one is the right fit for your workshop!