Skip to content
Two common tools used by both professional mechanics and DIY car owners are the obd2 scanner with bluetooth and the car code reader.
Those handy gadgets that help you read trouble codes and monitor your vehicle's performance.
But if you really want to level up your diagnostic game, you might want to consider a bidirectional obd2 scanner.
What Does Bidirectional Mean in a Car Scanner
At its core, a bidirectional scanner is a diagnostic tool that gives you more control over your car’s systems.
You see, while a regular OBD2 scanner is great for reading error codes and pulling up sensor data, it’s basically a one-way street. It tells you what’s wrong, but it doesn’t do much beyond that.
Unlike basic OBD2 scanners or car code readers that only retrieve trouble codes from your car’s onboard computer, a bidirectional obd2 scanner can both read and write data.
This means it can send commands to your car’s systems, allowing it to perform tasks like activating components, resetting systems, and running tests.
While a regular car scanner can give you a snapshot of your vehicle’s performance by showing error codes or sensor data, a bidirectional scanner gives you more control over the car's functions. For example, you can activate the fuel pump, test the ABS system, reset the oil light, or even reprogram the vehicle's computer.
Related Reading: The Future of Motorcycle Diagnostics
The Main Difference
Functionality
OBD2 Scanner: A standard OBD2 scanner typically reads and clears fault codes, providing basic data from sensors like engine temperature, oxygen sensor readings, and more.
It’s a great tool for quick diagnostics and clearing codes but lacks the capability to interact directly with the vehicle’s systems.
Bi-directional Scan Tool: This tool does everything an OBD2 scanner does, but it also offers much more. It allows users to send commands to various car systems, enabling more hands-on diagnostics and repairs. A bidirectional automotive scanner can activate or test certain systems, reset parameters, and perform procedures that a standard OBD2 scanner cannot.
Control and Testing
A bidirectional automotive scanner helps you zero in on the issue faster, giving you the power to test individual components and interact with systems directly.
ABS (Anti-lock Braking System): You can test the ABS system to check if it’s functioning correctly, simulate sensor readings, or even reset the system after repairs.
Electronic Components: Activate systems like power windows, door locks, and even the radiator fan. This can save a lot of time when troubleshooting electrical components.
Brake and Throttle Systems: You can calibrate the throttle position sensor or perform active tests on the brake system, which helps in pinpointing issues without needing to disassemble parts.
Bi-directional scanner having the ability to test components directly saves time and increases diagnostic accuracy.
Advantages of Using a Bidirectional Scanner
Multi-Functionality
A bidirectional automotive scanner offers an extensive range of features that a regular scanner for car can’t touch. Aside from the basic code-reading capabilities, it enables you to perform tasks like:
Activating components: You can activate components such as fuel pumps, windows, or the air conditioning system to verify whether they are functioning properly.
Resetting systems: After performing maintenance tasks like replacing brake pads, resetting the oil light, or recalibrating the throttle, a bidirectional scanner helps you reset the vehicle’s systems and get it back on the road.
Advanced troubleshooting: An obd2 scanner professional can interact with more complex systems like ABS, SRS (airbag), transmission control, and more. It helps you pinpoint the problem much faster and more accurately than an OBD2 scanner.
For example, if you suspect an issue with the brake system, you can perform an active test to see how the car reacts, instead of relying on code interpretation alone. This leads to faster, more efficient diagnostics, saving you time and effort, especially when dealing with complex issues like electrical faults or sensor malfunctions.
When using a regular OBD2 scanner, you may have to clear a code, test the system again, and repeat the process several times. With a bidirectional scanner, you can perform multiple tests in one go, and even interact with the system to see immediate results.
Better for Auto Professional Technicians
Its advanced functionality allows you to handle a wider range of vehicles, including newer models that require more specialized tools. Whether you’re working on a foreign luxury car, a high-performance sports car, or an older vehicle with complex electrical systems, a bidirectional automotive scanner gives you the control you need to diagnose and repair with confidence.
Is It Worth Investing in a Bidirectional Scanner
The truth is, while it’s true that these tools tend to be more expensive than basic OBD2 scanners (with prices ranging anywhere from $200 to $600 or more), the investment can pay off in the long run, especially for professionals or serious DIYers.
For Professionals
For professionals, the bidirectional scanner offers unmatched flexibility and precision. Its ability to interact with a vehicle's systems directly can cut down on diagnostic time, reduce errors, and increase the overall quality of service. With this tool, you won’t have to spend hours on trial-and-error testing or manual repairs. You can get the job done more efficiently, which translates to a faster turnaround time and potentially more customers.
For DIY Car Owners
For DIYers, a bidirectional auto scanner is a bit of an overkill if you only need to read and clear basic codes. However, if you're someone who likes to get their hands dirty and perform more advanced repairs, such as changing the brake pads, replacing the thermostat, or troubleshooting the fuel system, a bidirectional scanner can make these tasks significantly easier. Plus, it’ll save you the cost of taking your car to a mechanic for small issues that you can handle on your own.
Long-Term Savings
Though the initial investment in a bidirectional autoscanner is higher, it can save you long-term repair costs. By being able to reset systems, test parts, and perform advanced diagnostics, you can potentially avoid costly trips to the mechanic. Plus, the faster you can diagnose problems, the less time you’ll spend working on your car — saving you money in the process.
How to Choose the Right Bidirectional Scanner
If you’ve decided that a bidirectional scanner is the right tool for you, it’s important to choose the right one.
Vehicle Compatibility: Make sure the scanner supports the make and model of your vehicle. Some scanners are limited in the range of cars they can work with, while others are more universal.
Features: Look for scanners that offer a wide range of functions, including live data streaming, sensor testing, and system resets. The more features, the better.
Ease of Use: Even though bidirectional scanners offer more advanced features, they should still be user-friendly. Look for one with an intuitive interface and clear instructions for performing various tasks.
Price vs. Value: While some scanners may seem expensive, remember that you’re paying for a more comprehensive tool. Consider the value it will provide in terms of saving time, offering better diagnostics, and enabling more control over your vehicle’s systems.
My Experience with the ANCEL V6 Pro Bi-Directional Scan Tool
I recently bought the ANCEL V6 Pro best car scanners for a great price of $439.99, and let me tell you, it’s made a noticeable difference in how I diagnose and repair my cars.
One of the standout features for me has been its 25+ special functions, which cover everything from TPMS (Tire Pressure Monitoring System) to advanced transmission testing and headlight adjustments.
I remember when I was troubleshooting an issue with the steering angle sensor on one of my cars. With the V6 Pro, I was able to calibrate the sensor quickly and accurately, something that would’ve taken much longer with a basic scanner.
The vehicle coverage is another reason I love this tool. It supports over 1,000 vehicles, and since I own two cars—each a different make and model—it’s a relief to know the V6 Pro works seamlessly across both. Whether it’s my older model or a newer one, this scanner handles it all. Plus, the car key programming function is incredibly handy.
I used it recently when I had to program a new key for my second car. The process was straightforward and saved me a trip to the dealership.
Whether you’re working on your car at home or you’re a professional mechanic, this tool is more than up to the task.
Conclusion
The bidirectional scanner is more than just a fancy upgrade. It’s a game-changing tool that offers better control, faster diagnostics, and more effective repairs.
Whether you’re a professional mechanic or a DIY car enthusiast, this tool can help you get the job done faster and more accurately. Sure, it comes with a higher price tag than a basic OBD2 scanner, but in the long run, the time and money you save will more than make up for it.
So, if you’re serious about taking control of your car’s maintenance and repairs, a bidirectional scanner might just be the tool you didn’t know you needed.
FAQs
How Does a Bidirectional Scanner Help with Car Maintenance?
A bidirectional scanner simplifies car maintenance by providing more control over the vehicle's systems. For example, after performing tasks like changing brake pads or replacing filters, the scanner can reset sensors, calibrate components, or perform tests to ensure everything is functioning properly. This not only saves time but ensures that your vehicle’s systems are properly aligned after maintenance.
Can I Use a Bidirectional Scanner on Both New and Older Cars?
Yes, many bidirectional scanners, like the ANCEL V6 Pro, support both newer and older car models. However, the functionality may vary depending on the car’s age and the scanner’s compatibility. Older cars with simpler electronic systems might not require or support advanced bidirectional features, but the scanner can still be used for basic diagnostics. Always verify that the scanner supports the specific make and model of your car, especially for vehicles that are older or have more complex systems.
What Are the Limitations of a Bidirectional Scanner?
While bidirectional scanners offer extensive capabilities, they do have limitations. For instance, they cannot perform repairs or physically fix a malfunctioning component; they only provide diagnostic data and allow you to control or reset vehicle systems. Additionally, some vehicles with proprietary software or newer car models might not support all the features a bidirectional scanner offers. Always check the compatibility of your car and the scanner before expecting full functionality.
