Home » Best Bidirectional Scan Tool Reviews 2021 [Most Popular 10 Scanner]

Best Bidirectional Scan Tool Reviews 2021 [Most Popular 10 Scanner]

A bi-directional scanner is a tool that not only connects to a car’s engine computer to read error codes but as well as sends commands. Besides, this tool can turn the systems in your car on and off, to help you know the reason why the check engine light is on.
With so many bi-directional scan tools, it is vital to pick the right bi-directional scanner for your car. The most popular Bidirectional scan tool brands are Autel, Launch, etc. An excellent scan tool should support a broader range of vehicles, have an intuitive user-interface, and be well built to last long. To make your work easier, we selected the best bidirectional scan tool on the market. These are as follows:

Best Bidirectional Scan Tool Comparison Chart

ImagesOBD2 ScannersWeightPrice Idea
Overall 2020 Best choice
Check Price
LAUNCH X431 V+ (Upgraded Version of X431 V PRO) Bi-Directional Full Systems Diagnostic Scan Tool 20 Reset Functions Key Programming, ECU Coding, ABS Bleeding, SAS, DPF, BMS, TPMS Reset 2 Years Update
Read Review
13.23 poundsMedium
Check PriceAutel MaxiSys MS906BT Bluetooth Automotive Scan Tool Diagnostic Scanner with ECU Coding, Bi-Directional Control, Key Coding, Oil Reset, ABS, SRS, DPF, EPB, TPMS, Advanced Ver. of MS906 DS808 MK808
Read Review
19 poundsMedium
Low Price ChoiceCheck PriceAutel Maxidas DS808 Automotive Diagnostic Tool OBD2 Scanner Key Bi-Directional Control Injector Coding (Same Function as MS906 and MP808)
Read Review
5.9 poundsMedium
Most Advanced ChoiceCheck PriceAutel Maxisys Elite Diagnostic Tool (Upgraded Version of MS908P Pro) with WiFi BT Full OBD2 Automotive Scanner with J2534 ECU Programming & 2 Years Free Update
Read Review
2.2 poundsExpensive
Trusted Budget choiceCheck PriceLAUNCH X431 V PRO Bi-Directional Scan Tool Full System Scanner,Key Programming,Reset Functions ABS Bleeding,TPMS,EPB,SAS,DPF,BMS,ECU Coding,Injector Coding, Full Connector Kit- Free Update
Read Review
10.7 poundsMedium
Check PriceAutel Maxisys Pro MK908P(MS908P/MS908SP) OBD2 Diagnostic Scanner For ECU coding, Active Test, J2534 Reprogramming (Same as Maxisys Elite, Upgraded Version of Maxisys Pro) With Free Car Battery Tester
Read Review
0.16 ouncesHigh
Check PriceLaunch CRP429 OBD2 Scanner Scan Tool Full System Code Reader 8 Reset Functions of ABS Brake Bleed, Oil Reset, EPB, BMS, SAS, DPF, Injector Coding and IMMO, Battery Voltage Graphing, One-Click Update
Read Review
2.64 poundsLow
Check PriceFOXWELL NT650 Elite Car OBD2 Scanner Automotive OBD II ABS Airbag Code Reader with SAS EPB DPF EPS CVT TPMS TPS Battery Registeration Oil Light Reset Auto Special Service Diagnostic Scan Tool
Read Review
3.1 poundsLow
Check PriceFOXWELL NT630 Plus OBD2 Scanner SRS Code Reader Automotive OBD II SRS Airbag Diagnostic and ABS Brake Bleed Scan Tool
Read Review
2.65 poundsLow
Check PriceAutel Autolink AL619 OBD2 Scanner ABS SRS Airbag Warning Light Scan Tool, Turn Off Check Engine Light Car Diagnostic Tool, Quick Test Engine System Code Reader
Read Review
2.05 poundsLowest

Most Popular 10 Best Bidirectional Scan Tool Reviews 2021

These are the best Bi-directional scanner on the market.

Autel Maxisys MS906BT Bluetooth Automotive Scan Tool Diagnostic Scanner

The Autel Maxisys Ms906BT Bluetooth automotive scan tool is one of the best bidirectional scan tool out there. It offers advanced functions such as actuator test, function test, and much more. Additionally, it performs 21 service functions, and some of them include ABS Auto bleed, oil reset, SAS calibration, DPF regeneration, EPB service, etc. Note that this scan tool performs bi-directional control for specific vehicles. So, you should find out if it performs this function on your vehicle make and model.

Technical Specifications of the Autel Maxisys MS906BT OBD2 scanner

Features Autel MS906BT
Operating System(OS): Android 4.4.2, KitKat
Processor: Samsung Exynos T5260 6-Core Processor (1.3 GHz quad-core ARM Cortex-A7 + 1.7 GHz dual-core ARM Cortex-A15)
Display: 8.0″ LED capacitive touch screen with 1024x768P resolution
Internal Memory: 2 GB RAM and 32 GB ROM
Oil Reset: Yes
Camera: Built-in 8-megapixel rear camera, autofocus & flashlight
Live data: Yes
Views freeze frame data: Yes
Instant remote control tech support anytime, anywhere: Yes
Connectivity: Wi-Fi (802.11 b/g/n), USB: 2.0, Mini USB 2.0, Wireless BT V2.1+EDR, Class1, HDMI 1.4a
Real-time push message notifications: Yes
Smart AutoVIN technology: Yes
Audio Input/Output: Microphone, Single Speaker, 3-Band 3.5 mm stereo/standard headset jack
Sensors: Gravity Accelerometer, Ambient Light Sensor (ALS)
Power and Battery: 10,000 mAh 3.7 V lithium-polymer battery, Charging via 12 V AC/DC power supply (up to 14 hours of continuous operation)
Storage Temperature: -20 to 70°C (-4 to 158°F)
Update Option: Yes. (via internet)
Input Voltage: 12 V (9-35 V)
Vehicle Coverage: more than 80 US, Asian and European makes and models
Support Car Models: Abarth, Acura, Alfa, Audi, Bentley, Benz, Bmw,
Fiat, Ford, Gm, Holden, Bugatti, Chevrolet, Chrysler,
Hyundai, Infiniti, Isuzu, Citroen, Dodge, Dacia, Daihatsu,
Kia, Land Rover, Lexus, Lancia, Maybach, Mazda, Mini, Mitsubishi,
Honda, Jaguar, Jeep, Nissan, Opel, Peugeot, Saab, Scion, Seat,
Skoda, Smart, Sprinter, Subaru, Porsche, Renault, Suzuki,
Toyota, Vw, Vauxhall, Volvo, Etc. Etc..
Operating Temperature: -10 to 55°C (14 to 131°F)
Warranty: 12-Month Limited Warranty
Price: Autel Maxisys MS906BT OBD2 scannerCheck Today’s Price

Besides, using the Autel MS906BT is fun and easy. This is thanks to the wireless connectivity that allows the user to connect it from anywhere within the garage. Also, you don’t have to worry about connecting this unit to your vehicle as it is fitted with a lithium battery that runs for 14 hours. Furthermore, it gives the user different connection options such as USB ports, audio, and auxiliary ports.

Whether you have a car repair shop or are a professional mechanic who needs a reliable scanner, this tool will be of great help to you. It covers more than 80 vehicle models from the USA, Europe, and Asia. What’s more, the large screen displays every data clearly for quick and easy interpretation.


  • Well-built to last long
  • The bi directional scan tool has data logging capability for solving problems correctly
  • Performs a broader range of functions
  • Extensive vehicle coverage
  • Large and intuitive user-interface
  • Simple to update
  • 1-year warranty


  • It does not perform ECU coding on all vehicles makes and models
  • It is slightly expensive

Launch X431 V+ BI-Directional Full Systems Diagnostic Scan Tool

The Launch X431 V+ scan tool is another quality bi-directional scanner with excellent features and functions. It boasts a 10.1 HD IPS display that makes interpreting results easy and fast. The scan tool has the ability to read and graph data for all systems in your vehicle. This is with the inclusion of air conditioning, navigation, wiper system, and other systems. It is one of the best bidirectional scan tool for the money.

Technical Specifications of the Launch X431 V+ Scan Tool

Features Launch X431 V+
Works: Over 68 car brands and 220 car models from America, Europe, Asia
OS: Android
Main Brands: Skoda, Opel, Citroen, Porsche, Rover, Audi, Chrysler, Dodge, Jeep, Acura, Lexus, Honda, Ford, Nissan, Lincoln, Mazda, etc
Software Update Option: Yes, 2-Years Free Update
Check Engine Light: Yes
View Live Data: Yes
Active Tests: Yes
View Freeze Frame: Yes
Oil Reset Service: Yes
Tooth Learning/Anti-theft Matching: Yes
ABS,SRS, Body control module: Yes
Battery Register /Battery Maintenance: Yes
Wifi,Bluetooth: Yes
Warranty: 5-year warranty
Price: Launch X431 V+ BI-Directional Full Systems Diagnostic Scan ToolCheck Today’s Price

Furthermore, the scan tool can be utilized to perform several functions such as injector coding, DPF reset, BMS reset, Oil reset, EGR Adaptation, ABS bleeding, SAS reset, transmission reset, and gear reset.

On top of that, this is a durable scanner that will last for many years to come. It might take time to recharge, but the charge lasts for 8 hours. Also, it has an excellent storage capacity of 48 GB. With the 2 years free update, you will always have the latest software to diagnose the newest vehicle models.

Besides, you will also diagnose an extensive range of vehicles from all over the world. This includes American, European, Asian, Indian, Russia, and much. In short, it covers at least 150 car brands and 1000 car models.


  • Large and bright LCD for a straightforward interpretation
  • Performs a broader range of functions
  • The bi directional scan tool is compatible with a more extensive range of vehicles
  • Reads and clears error codes
  • Fast and accurate
  • Excellent runtime of 8 hours
  • Turns on/off the fuel pump and cycling the a/c clutch on/off
  • 2 years free update
  • 5 years warranty


  • It takes a long period to recharge
  • Several users have reported trouble with activation and update codes

Autel Maxidas DS808 Automotive Diagnostic Tool OBD2 Scanner Key Bi-Directional Control

If you want a professional scanner at an affordable price, then you will love the Autel Maxidas DS808 Automotive OBD2 scan tool. This is a compact and sturdy code reader that you will use to read and erase error codes. The bi-directional scanner performs most of the functions such as SAS calibration, throttle body adjustment, ECU coding, EPB, DPF regeneration, ABS/SRS, oil reset, and much more. Apart from that, the bi-directional control function carries out active testing of the most significant functions in your vehicle.

Technical Specifications of the Autel Maxidas DS808 obd2 diagnostic scanner

Features Autel Maxidas DS808
Operating System: Android 4.4.4
Memory: 32GB
Display: 7-inch LCD capacitive touchscreen with 1024×600 resolution
Sensors: Ambient light sensor for brightness auto changing
Operating Temp: -10 to 60°C(14 to 140°F)
Storage Temp: -20 to 70°C (-4 to 158°F)
Processor: Cortex-A9 processor (1.5 GHz)
Audio Input/Output: • Input: N/A • Output: buzzer
Connectivity: Mini USB 2.0 • USB 2.0 • Wi-Fi • Micro SD card (supports up to 32GB)
Power and Battery: 3.7 V/3200 mAh lithium-polymer battery • Charges via 5 VDC power supply
Oil Reset: Yes
Tested Battery Life: Around 4.5 hours of continuous use
Battery Charging Input: 5 V/1.5 A
Power Consumption: 500 mA (LCD on with default brightness, Wi-Fi on) @3.7 V
Vehicle Coverage: More than 80 U.S., Asian and European vehicle
Models: Acura, Audi, Bmw, Bentley, Benz, Bugatti,
Citroen, Chrysler, Dodge, Daewoo, Ford, Fiat,
Gm, Hyundai, Gmc, Infiniti, Holden, Honda,
Isuzu, Jaguar, Kia, Land Rover, Jeep, Lexus,
Maybach, Nissan, Mazda, Mini, Mitsubishi,
Opel, Saab, Peugeot, Porsche, Renault, Scion,
Seat, Smart, Suzuki, Skoda, Sprinter, Subaru,
Toyota, Volvo, Vauxhall, Volkswagen, Vw etc..
Update Option: Free Online Update
Weight: 788 g (2.42 lb.)
Warranty: 12-month warranty for any product problems
Price: Autel Maxidas DS808Check Today’s Price

Featuring a 7-inch LED touchscreen, this bi directional scanner is easy and straightforward to use. Additionally, it has a friendly lithium battery that runs for a maximum of 4.5 hours. However, many users have complained about it and say that it doesn’t hold a charge. Moreover, the scan tool can diagnose a more extensive range of vehicles such as Land Rover, Benz, Honda, Nissan, Renault, Peugeot, Subaru, Volkswagen, Mazda, and much more.

When you purchase this best bidirectional scan tool, you get one year of free updates and a 12-month warranty. Therefore, you can be confident that you’re investing in a reliable brand.


  • It covers more than 80 US, Asian, and European vehicles
  • Wireless connection
  • Performs a broad range of functions
  • Automatic software update
  • Large 7-inch LED screen for displaying results even in the dark
  • Easy to use with the large LED touchscreen
  • AutoVin technology allows user to identify car easily


  • It does not perform ECU programming
  • Not the best battery for such a quality scanner as it does not hold a charge

Autel Maxisys Elite Diagnostic Tool with Wi-Fi BT Full OBD2 Scanner

If you’re ready to spend to get one of the best bidirectional scan tools on the market, then this is one of the best scanners to get. The Autel Maxisys elite diagnostic scan tool doesn’t come cheap, and that’s why it is best suited for professional use and busy auto repair shops. You will get ECM features means Engine Control Module.

Technical Specifications of the Autel Maxisys Elite Diagnostic Tool

Features Autel Maxisys Elite
Processor: NVIDIA Tegra® 4 (4-PLUS-1 Quad-core Processor) 1.8GHz with ARM Cortex – A15 CPU
Memory: 2GB RAM & 32GB Embedded Memory
Connectivity: 802.11a/b/g/n/ac WIFI Version 2.1 3Mbs,
Bluetooth RJ45,
Ethernet Connection 3.0 USB(2.0 Compatible)
HDMI 1.4a
Support SD Card up to 32GB
Works: All 1996 and newer vehicles
Operating System(OS): Android 4.4.4 KitKat
Display: 9.7” Retina display with 2048X1536 resolution & Capacitive touch screen
Camera: Rear: 8.0 Megapixel, Autofocus with Flashlight
Front: 2.0 Megapixel
Sensors: Ambient Light Sensor, G-sensor
Audio Input/Output: Microphone
Dual Speakers
3-Band 3.5 mm stereo/standard headset jack
Power and Battery: 3.7V/13600mAH Lithium-polymer battery
DC/12V/3A Power Supply
Input Voltage: DC/12V/3A
Storage Temperature: -20 to +70°C
Operating Temperature: -10 to +55°C
Power Consumption: Max 20W
Car Model: More than 80 US domestic, Asian and European
WiFi, Bluetooth: Yes
Protocols: Most OBD1/OBD2
Views freeze frame data: Yes
Check Engine Light(MIL): Yes
Real-Time push message notifications: Yes
Reads, stores Data: Yes
Clears codes & resets monitors: Yes
Playbacks live sensor data: Yes
Get transmission codes: Yes
Remote Control Tech Support: Yes
Software Update: Two years of free update
Warranty: One year warranty
Price: >Autel Maxisys Elite Diagnostic ToolCheck Today’s Price

The bi directional unit offers extensive vehicle coverage as it covers more than 80 US, Asian, and European vehicles. Some of the comprehensive functions that it performs include ABS bleeding, air conditioner initialization, oil reset, EPB, DPF regeneration, coding, immobilizer matching, and programming. A unique feature of this diagnostic scanner is the MaxiFix platform that allows you to access the different databases of repair and diagnostic tips.

It is also powered by the NVIDIA’s Tegra”4 mobile processor, which is one of the fastest. Also, the 9.7-inch retina screen displays results well. And with the Android operating system, you will diagnose many cars quickly and accurately.

Other exceptional features that the Autel Maxisys Elite diagnostic tool offers include injector programming, DPF reset, SAS reset, anti-theft matching, and tire pressure.


  • Unique ergonomic design for ease of use
  • The wireless connection allows you to roam around your garage
  • The status indicator light lets you know the battery level
  • Performs 21 service functions
  • It is 2x faster than most scan tools on the market
  • AutoVin takes the guesswork out
  • Interactive data logging sessions
  • Automatic software updates for 2 years


  • It is expensive

Launch X431 V PRO best BiDirectional Scan Tool Full System Scanner

If you want the best car scan tool for the money, then you can’t go wrong with the Launch X431 V Pro bi-directional scanner. This is a sleek and sturdy bi-directional scan tool that will allow you to diagnose problems that you didn’t know that your car has. The Launch X431 V PRO Screen Size is 8, but the Launch pros mini’s screen size is 7 inches. V Pro covers a broad range of functions, such as actuator tests, injector coding, TPMS reset, oil lamp reset, ECU coding, ABS bleeding, key programming, matching, adaptation, active test, and much more.

Technical Specifications of the LAUNCH X431 V PRO Bi-Directional Scan Tool

Features Launch X431 V Pro
Vehicle Coverage: Asian, European, American, Russia, Malaysia, India car brands up to 150 car brands, 10000 car models
Operating System(OS): Andriod 7.1 System
Display: 8” High resolution IPS capacitive touch screen
CPU: ARM Coretex-A7 quad-core , 1.3GHZ
Memory: 128GB extended TF Card
Viewing live data-stream: Yes
Oil Reset Service: Yes
Anti-theft Matching: Yes
Freeze Frame Data: Yes
Reading and Clearing of diagnostic trouble codes: Yes
ABS Bleeding: Yes
Electronic Parking Brake Reset: Yes
Battery: 1 Lithium ion batteries required.
Battery Life: 9 Hours NON-STOP Using Time+ Long Stand-by Time
Injector Coding: Yes
Multi-lingual: English, Arabic,Polish, German, Russian, French, Finnish, Dutch, Czech, Portuguese, Spanish, Hungarian, Italian, Japanese, Swedish, Turkish, Greek, Denish, Korea etc
Reset Functions: 20
Wireless Bluetooth Diagnoses: Yes
Technology Backup: Yes
Software Update Option: Free Update
Warranty: 5 years warranty
Price: Launch X431 V PROCheck Today’s Price

Besides, it is compatible with more than 150 car brands from the USA, Europe, Asia, India, Russia, and Malaysia. It has the capability to translate into 24 different languages, which makes it ideal for use around the globe.

Furthermore, the bi directional scanner features an 8-inch display for showing results. It runs on Android 7.1 OS, which is fast. Additionally, it is easy to update software using the Wi-Fi connectivity that it comes with. And if you’re worried about your investment, the manufacturer offers a 5-year warranty to buyers.


  • A broad range of functions
  • Covers more than 150 car brands and 1000 car models
  • Multilingual menu
  • Performs advanced functions lie ECU coding, active test, matching, and bi-directional control
  • The large 8-inch screen shows all the diagnosis results
  • Reads and clears DTCs and view live data
  • Service functions for all systems
  • Wireless connection
  • Free software update
  • 5-year warranty


  • It is not suitable for heavy-duty vehicle models

Autel Maxisys Pro MS908P OBD2 Diagnostic Scanner

The Autel Maxisys Pro MS908P OBD2 Diagnostic scan tool is an advanced tool that is best suited for a professional mechanic. The unit is sturdily constructed to withstand impact and a tough floor garage. It comes with an Android 4.4 based system and has an excellent super-fast- Hexa-core processor that allows the user to multi-task. On top of that, it has an ultra-clear 10.1-inch LED screen for displaying results. With the 64GB onboard memory, you will store a lot of vehicle data and use it for reference. Thus, it is one of the best bidirectional scan tool for professionals.

Technical Specifications of the Autel Maxisys Pro MS908P Automotive Diagnostic Scanner

Features Autel Maxisys Pro MS908P
Internal Memory: 2 GB RAM and 32 GB ROM
Check Engine Light: Yes
Oil Reset: Yes
Camera: 8.0 Megapixel, AF with Flashlight
Freeze Frame Data: Yes
Display: 8.0 inch LED capacitive touch screen with 1024x768P resolution
Operating System(OS): Android
Processor: Samsung Exynos 6-Core Processor (1.3 GHz quad-core ARM Cortex-A7 + 1.7 GHz dual-core ARM Cortex-A15)
EPB, ABS/SRS, SAS Calibration, DPF: Yes
Power-balance test & auto-scan: Yes
Displays live data in text: Yes
Recording modes: Full Screen waveform graphing analysis
Connectivity: Wi-Fi (802.11 b/g/n), DB16 DLC, USB 2.0, SD Card (Support up to 32GB)
Actuation Test: Yes
ECU Information: Yes
Opens and closes electronic brake calipers: Yes
Injector Coding: Yes
Read all kinds of DTCs: Yes
Audio Input/Output: Single Speaker, Microphone
Real-time push message notifications: Yes
Erase the codes easily after DTCs retrieving: Yes
prints out recorded data with Wi-Fi: Yes
Vehicle Coverage: More than 80 US, Asian and European Vehicle
Support Car Models: Acura, Audi, Bentley, Bugatti, Chrysler, Benz, Bmw,
Citroen, Dodge, Daewoo, Ford, Holden, Honda, Fiat, Gm, Gmc,
Hyundai, Infiniti, Jeep, Kia, Isuzu, Jaguar,
Land Rover, Mini, Mitsubishi, Lexus, Maybach, Mazda,
Nissan, Peugeot, Renault, Saab, Scion, Opel, Porsche,
Seat, Skoda, Subaru, Suzuki, Toyota, Smart, Sprinter,
Vauxhall, Volvo, Volkswagen, Vw Etc..
Update Option: One-year free update
Warranty: 1-Year Limited Warranty
Price: Autel Maxisys Pro MS908P AutomotiveCheck Today’s Price

This sleek and lovely bidirectional scanner also comes with an 8.0-megapixel rear camera for capturing images and sharing them with other technicians for answers. Moreover, you will cover a broader range of vehicles, which include Ford, Jeep, Bugatti, Citroen, Benz, BMW, Ferrari, Audi, Land Rover, Lamborghini, land rover, and much more.

Additionally, the unit performs several functions, including full-system diagnoses and unique services. Besides, it also has advanced coding and J2534 ECU programming. That’s why it is recommended for professional technicians and busy car repair shops. It is one of the best bidirectional scan tools for professional mechanics.

This is an upgraded version of the MS908P scan tool. As a result, it can be vital to BMW and Benz users by assisting them in replacing software in the Electronic control unit, fixing software-controlled drivability problems, and program new ECUs.

All-in-all, this is a scan tool that is easy and fun to use if you handle different car makes and diagnose various car problems.


  • Extensive vehicle coverage
  • Powerful and fast processor
  • Large 10.1-inch LED screen for ease of interpreting results
  • Provides advanced ECU programming
  • Free software update for one year
  • Offers 25 special functions


  • It is costly
  • ECU programming is only limited for BMW and Mercedez Benz

Launch CRP429 OBD2 Scanner Full System Code Reader

The Launch CRP429 OBD2 scan tool is another quality diagnostic scanner suitable for DIYers and car enthusiasts. This tool is slightly different from the ones that we’ve looked at as it has a smaller screen and buttons. However, it is also easy to use and accurate. What’s more, it boasts of a broader range of functions that include retrieve live data of all systems, provide all OBD2 functions, and several unique features.

Technical Specifications of the Launch CRP429 OBD2 Scanner Scan Tool 8 Reset Functions

Features Launch crp429
Works: most 1996 US-based, 2000 EU-based and newer vehicles
Display: 5-inch 720P HD Touch Screen; Android 7.0 OS
Touch screen: Yes
Wi-Fi: Yes
Protocol: Supports 10 test modes of OBDII
Read dynamic data stream: Yes
Oxygen sensor test & Carbon canister test: Yes
Read & clear DTC: Yes
Operating System(OS): Android
ABS bleeding function: Yes
Read Data Stream: Yes
Display Modes: Value, Graph and Merged
Storage Capacity: RAM: 1GB; ROM: 8GB
Connection: Wi-Fi
Engine oil lamp reset: Yes
Battery: 1 Lithium Metal batteries required. (included)
Update: One-Click 12 Months Free Update via WiFi
Languages support: English, Spanish, French, German, Italian, Russian, Japanese, Portuguese, Korean
Warranty: 12 months warranty
Price: Launch CRP429 OBD2 ScannerCheck Today’s Price

The CRP429 is a compact and sturdy scanner that will last for many years to come. Its intuitive user-interface makes it fun to use. You can use the buttons or touchscreen for a quick diagnosis. Featuring the A5 quad-core processor, this bi-directional scanner will read and retrieve error codes quickly. If you want the best bidirectional scan tool at an affordable price, then buy this.

Besides, the scanner comes with free software updates, which can be upgraded via Wi-Fi. All you need is a one-click to update the software. Also, it comes with a one-year warranty, which is not the best but worth having.

Overall, this is an excellent and compact diagnostic tool that most car enthusiasts and buy mechanics should have.


  • Durable construction
  • Well-labeled buttons for ease of use
  • It works with most 1996 and newer cars
  • Provides all OBD2 functions and several special functions
  • Extensive screen display info for ease of interpretation
  • 12-month free online update
  • 12-months warranty


  • It lacks several advanced functions

Foxwell NT650 Elite Car OBD2 Scanner

If you want an affordable scan tool that will perform most of the advanced functions, then you will love the Foxwell NT650 diagnostic scanner. This bi-directional scan tool is well-built to last long and has all the features that a professional mechanic may desire in a scanner. It has a large screen for showing results, and the buttons are well-labeled for quick diagnosis. Also, the impact-resistant body will put up tough garage floor conditions.

Technical Specifications of the Foxwell NT650 Diagnostic Scan Tool

Features Foxwell NT650
Display: 4.3″ color display
View, graph, record and playback OBD-II live data: Yes
Check Engine Light(MIL): Yes
Reads freeze frame data: Yes
support Modes: It supports all 10 OBDII test modes
Injector Coding: Yes
Read and Clear EPB/SBC trouble codes: Yes
Steering angle sensor(SAS) functionality: Yes
Turn off the ECU and brake warning light: Yes
Opens and closes electronic brake calipers: Yes
Software Update: Life-long Free Updates
Warranty: One-year limited warranty
Price: Foxwell NT650Check Today’s Price

What’s more, the Foxwell NT650 elite diagnostic car scanner performs several functions such as reading and clearing error codes, do O2 sensor & Evap test, SAS calibration, SAS calibration, TPMS, injector, steering sensor inspection, oil EPB light reset, and much more.

This bi-directional scan tool works on different vehicles makes and models such as Porsche, Ford, Suzuki, Toyota, Isuzu, VW, Mercedes-Benz, GM, Landrover, Vauxhall, SAAB, Skoda, Honda, Audi, Jaguar, KIA, Maserati, Nissan, and much more.

Furthermore, you can perform other special functions like oil service light reset, battery registration, fuel injector, and CVT transmission function. With the lifetime upgrade, you will always have the latest software to diagnose the latest vehicle makes and models.


  • It is fast and accurate
  • Compact and sturdy construction
  • Affordable bidirectional scanner
  • Lifetime software updates
  • It bleeds the ABS system(anti lock brake systems)
  • Extensive vehicle coverage
  • Well-organized keypad, menu-driven operation
  • 3-inch color display
  • ABS motor test


  • Several users have complained that it is not compatible with all vehicles
  • Not the best customer support out there

Foxwell NT630 Plus OBD2 Scanner SRS Code Reader

If you want a perfect scan tool for diagnosing your car safety systems and brake systems, then the Foxwell NT630 Plus OBD2 code reader is the best. Though compact and affordable, this unit allows you to control and activate ABS, SRS, SAS systems, as you work through them. Other notable functions of this bi-directional scanners include removing air from the internal brake fluid chambers after servicing the brakes, DTC code lookup, freeze frame, live data, onboard monitor test, and much more.

Technical Specifications of the FOXWELL NT630 Scanner

Features Foxwell NT630
ABS Active Tests: Yes, (Typical special test options include)
Airbag Diagnostic Functions: Yes
Live data: Yes
Full OBD2 Service Function: Yes
Works: ALL 1996 and later vehicles
Display: DTC definitions on unit screen
Global OBDII: Yes
Service Functions: Yes! Reset Check Engine Light, ABS, and Airbag Service Light
ESP sensors data: Yes
Reads, stores Data: Yes
Steering Angle Calibration Sensor: Yes, (For more than 35 car makes)
Bi-directional Control Tests: Yes
Update Tool: FoxScanner
Mode: 6 functionality
Update Option: Life-long Free Updates
Warranty: One-Year Limited Warranty
Price: Foxwell NT630Check Today’s Price

The best part is that the Foxwell NT630 is compatible with almost all OBD2 compliant vehicles with the inclusion of cars, light-duty trucks, minivans, and trucks sold around the world. As a result, this is a perfect scanner for both professional mechanics and car enthusiasts. Besides, it comes with lifetime updates, which means that you will have the latest software to diagnose the newest car models.

With its compact and sturdy design, this is an excellent scanner that any mechanic would love to have. It is fast and straightforward to use. Also, you can move with it quickly as you can keep it in your car or backpack.


  • Compact and durable construction for long-lastingness
  • It is fast and accurate
  • It is affordable
  • Active tests
  • Three and a half month warranty
  • Lifetime software updates


  • It is not ideal for newbies as it is quite challenging to use
  • It has compatibility problems

Autel Autolink AL619 Scan Tool

The Autel Autolink AL619 is another affordable scan tool on our list. This affordable best bidirectional scan tool will allow you to retrieve generic codes, manufacturer-specific codes, and pending codes. Furthermore, it will tell you what the problem is; thus, you won’t have to waste time searching for the meaning of codes online.

Technical Specifications of the Autel AL619 Autolink OBD-II scan tool

Features Autel al619
Works: All 1996 or older vehicles
Display: TFT color display
Check Engine Light: Yes
Reads, Stores, and Playback Live PCM DataStream: Yes
Displays monitor and I/M readiness status(emission system): Yes
Retrieve and Clear Codes in Anti Lock Braking System (ABS): Yes
ABS, SRS Airbag: Yes
Views freeze frame data: Yes
Retrieves vehicle information: IN,CIN and CVN
Model Support: Over 50 different vehicle
O2 Sensor Monitor Tests: Yes
Vehicle Service Type: GM, Ford, BMW, Chrysler, Volvo, Honda, VW Mercedes, Toyota, Nissan,etc..
Update option: Lifetime Free Update
Warranty: One Year Warranty
Price: Check Today’s Price

What’s more, the Autel Autolink AL619 diagnostic scan tool is compact and easy to use. You don’t require to be an experienced mechanic to use it. That’s why it is recommended for DIYers who want a more advanced scan tool. However, startup mechanics and professional technicians can also use it.

The unique feature of this scan tool is the bi-directional function that enables you to check faults with your vehicle’s SRS and airbag systems. Apart from that, you can use it to clear all malfunction indicator lights, with the inclusion of ABS and SRS lights. Other functions include erasing codes, live data, retrieving I/M readiness status, read codes, view vehicle information, DTC lookup, and much more.

Use this scanner to diagnose at least 50 vehicles makes from the US, Europe, and Asia. It can also be updated for free; thus, you will always have the latest software to diagnose the newest vehicle models.


  • Sleek and compact construction
  • Easy to use
  • Fast and accurate
  • It is affordable to performs both basic and advanced functions
  • It comes with free lifetime software updates
  • Covers more than 50 US, European, and Asian vehicles
  • Full OBD2 engine diagnosis


  • Many users have complained about poor customer support
  • It has compatibility issues

Get the best-bidirectional scan tool for your car if you want to diagnose more than just the essential OBD2 functions. Bi-directional scanners may be quite challenging to use, but they are very reliable and accurate. Pick the best scanner from the best brand with the features that you desire. However, bi-directional scan tools are slightly more expensive, and that’s why they are more suited for busy auto repair shops or professional technicians. I hope you’ve found the best bidirectional scan tool to diagnose your different car makes and models.


Question: What is a Bi-Directional scan tool?
Answer: A Bi-Directional scan tool allows you to send and receive information to and from a car’s onboard database. This scan tool usually has more advanced features than an ordinary scan tool. With a Bi-Directional scan tool, you can carry out tests and solve problems occurring within your car’s diagnosis system.

Question: How does a Bi-Directional control work?
Answer: The Bi-Directional control works by allowing the mechanic to use the tool to send and receive data from a car. For instance, instead of reading a DTC error code, the device also allows you to test different systems or open and close valves within the car to tackle the problem within.

Question: What is the difference between a Bi-Directional scan tool and a regular scanner?
Answer: A Bi-Directional scan tool is more advanced than the typical scan tools. A regular scanner reads and clears codes on your car. That’s the reason you see data parameters when you connect the OBD to its port below the dashboard(underneath the steering wheel). For a Bi-Directional scan tool, it has a bi-directional control that commands specific operations in the car.

Question: What is the main use of a Bi-Directional scanner?
Answer: The main use of a bidirectional scanner is to request the control module to conduct particular functions. Some of the functions include actuator tests, inspection tests, system tests, functional tests, re-initialization, and reprogramming. Unlike usual scan tools, bi-directional scanners reduce your diagnostic time.

Question: Who is best suited for a Bi-Directional scan tool?
Answer: Bi-Directional scanners are best suited for professional technicians and mechanics who have a lot to diagnose and know about different vehicles. Bi-Directional scanners not only perform advanced functions but can be utilized to perform specific functions.

So, if you want to perform advanced functions such as system tests, functional tests, actuator tests, inspection tests, and much more should use bi-directional scanners.

Still, have questions after reading this Best Bidirectional Scan Tool reviews? Comment below.


  1. If you are mechanic or pros who looking for full bidirectional scan tool under $700, Launch X431 Diagun V Pro would be best.

    Some more cheap scanner only do part of bidirectional test like abs or srs system test.


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