If you’re shopping for the best bidirectional OBD2 scanner, you want a tool that not only reads and clears codes but can also send commands to vehicle modules for active testing, resets, and programming. In this roundup we tested and compared popular models for DIYers and pro shops to help you pick the right scanner for your needs.
Quick Product Comparison
Our Top 10 Best Bidirectional Obd2 Scanner Reviews – Expert Tested & Recommended
1. XTOOL D7S Bidirectional OBD2 Scanner for All-System Diagnostics, FCA AutoAuth, 39 Resets, ECU Coding, CAN FD
The XTOOL D7S is a full-featured bidirectional OBD2 scanner built for technicians who need wide vehicle coverage and advanced service functions. It handles all-system scans, ECU coding and over 39 reset/adaptation functions with a clear UI.
Key Features That Stand Out
- ✓ All-system diagnostics for engine, transmission, ABS, SRS and more
- ✓ FCA AutoAuth support for Chrysler/Fiat/Alfa vehicles
- ✓ 39+ service resets including adaptations and relearns
- ✓ ECU coding and CAN FD compatibility
Why We Recommend It
The D7S packs near-professional features at a price that makes sense for small shops and serious DIYers. It’s fast, reliable, and covers the services most garages need without being overly complex.
Best For
Best for techs and home mechanics who want a near-factory level tool for a wide range of vehicles.
Pros and Cons
Pros:
- Comprehensive all-system scanning
- Wide service function set (39+ resets)
- Good value vs pro-level tools
- Solid build and intuitive UI
Cons:
- Occasional software quirks reported on rare models
- Larger device footprint compared to compact dongles
Customer Reviews
Customer Review: As a professional mechanic with several years of experience, I have used a wide range of automotive diagnostic tools, and I must say that the Xtool D7 has been a pleasant surprise. I have been using it in my workshop for the past six months, and so far, it has exceeded my expectations in terms of fu
Customer Review: Having owed and using Topdon, Ivonna, Xtool and an early bluetooth Android with dongle, I can say the D7s is a very capable scan tool for the price. I have used it on several GM, Ford, and an early model Chrysler, with no major problems. It’s a quick scan tool with many features and capabilities dep
2. Autel MaxiCOM MK900BT Bidirectional OBD2 Diagnostic Scanner with 3000 Active Tests, 40 Resets, CAN FD DoIP
The Autel MaxiCOM MK900BT is aimed at professionals who need deep diagnostics and thousands of active tests. It’s a powerful, fast tablet-style scanner with advanced functions like DoIP and CAN FD support.
Key Features That Stand Out
- ✓ 3000+ active tests for component activation and system checks
- ✓ 40 service resets including advanced adaptations
- ✓ DoIP & CAN FD support for modern vehicles
- ✓ Large 8-inch display and Bluetooth VCI for mobility
Why We Recommend It
This tool gives pro shops the coverage they need for modern cars and trucks. The MK900BT handles complex diagnostics and active tests quickly, saving time in busy repair environments.
Best For
Best for professional technicians and busy garages that need broad OEM-like functionality.
Pros and Cons
Pros:
- Extensive active tests and service functions
- Fast hardware and clear large display
- Strong vehicle coverage including DoIP
- Bluetooth connectivity for hands-free use
Cons:
- Higher price point than basic scanners
- Occasional learning curve for advanced features
Customer Reviews
Customer Review: My fist Autel scanner was an AL319 OBD2 code reader purchased in 2016. But vehicles are more advanced now and require high tech specialized equipment just to diagnose anything. The AL319 did a wonderful job for what it was meant for, but I needed more. I came across the MaxiCOM900BT and it had every
Customer Review: The Autel MaxiCOM MK900BT is hands down one of the best diagnostic scanners I’ve ever used. The 8-inch screen is crystal clear and makes navigating the menus very smooth. It connects via Bluetooth quickly, which gives me the flexibility to move around the vehicle while running tests. I was impressed
3. Z100 Bluetooth 5.2 Bidirectional OBD2 Scanner for iOS Android, Full System Diagnostics, 9 Resets, Live Data
The Z100 is a compact Bluetooth bidirectional scanner that pairs with phones using Bluetooth 5.2. It offers full-system reads, live data streaming and several reset functions without a heavy hardware price.
Key Features That Stand Out
- ✓ Bluetooth 5.2 for reliable phone pairing
- ✓ Full system diagnostics via companion app
- ✓ 9 reset/service functions including ABS and battery resets
- ✓ Live data streaming for quick troubleshooting
Why We Recommend It
This is a great starter bidirectional OBD2 option for DIYers who prefer phone-based tools. It’s affordable and does the core functions well for most everyday repairs.
Best For
Best for budget-conscious DIY users who want bidirectional features and live data on a phone.
Pros and Cons
Pros:
- Affordable with modern Bluetooth
- Full-system reads via app
- Compact and easy to store
Cons:
- Relies on third-party app quality
- Fewer advanced service functions than tablet scanners
Customer Reviews
Customer Review: My background for the past three decades is computer forensics. As a result, I am security conscious. The required iOS app, NexzDAS, for use with this device waves too many red flags for me to install on my phone.Scanning the QR code brought up offers to install other software. Frankly, I thought Ap
Customer Review: This scanner arrived in a card stock box within a standard Amazon bubble-wrap envelope. The item is undamaged. I was eager to try it out, so I scanned the QR code on a label provided inside the box and attempted to download the NexzDAS app. The first two times, I was hit with SPAM attempting to get
4. ANCEL Echo Bluetooth Bidirectional OBD2 Scanner, All-System Code Reader with Oil Brake Reset and Battery Registration
The ANCEL Echo pairs quickly with phones and focuses on all-system code reading plus useful services like oil, brake bleeding, and battery registration. It’s a straightforward tool for everyday maintenance.
Key Features That Stand Out
- ✓ All-system code reading (engine, ABS, SRS, transmission)
- ✓ Oil reset, brake bleeding and battery registration support
- ✓ Real-time data streaming for live diagnostics
Why We Recommend It
It’s simple to use and gives clear repair suggestions for many fault codes. For owners who want to handle common services without a bulky tablet, it’s a reliable option.
Best For
Best for car owners and DIYers who want app-based diagnostics with common service functions.
Pros and Cons
Pros:
- Easy phone pairing and app interface
- Good set of service functions for maintenance
- Real-time streaming on many systems
Cons:
- App features vary by vehicle make/model
- Less suited for deep ECU coding tasks
Customer Reviews
Customer Review: I used this on Kia Niro 2017. It reads and clears codes from all the modules of the car, using the app. Boots fast with the app. I do not believe it will run water pump (for purging) nor will it prime the hydraulic clutches. But for reading and clearing most all codes, I think this works well.Af
Customer Review: Connected to my iPhone easily. Simple to use and clear codes. Streams transmission fluid temperature for my Highlander and Porsche, which is vital for AT fluid changes. Unfortunately it doesn’t show AT temp for a 2016 Tundra.I bought scanner to reset fuel type and alcohol density for my Tundra but s
5. Autel MaxiCheck MX808S Bidirectional OBD2 Scanner, OE All-System Diagnostics, 3000 Active Tests, 28 Service Functions, FCA
The Autel MaxiCheck MX808S balances cost and capability with many active tests and OE-style functions. It’s a strong mid-range choice for shops and experienced DIYers who need reliable service functions.
Key Features That Stand Out
- ✓ 3000+ active tests mirroring higher-end Autel tools
- ✓ 28 service functions including maintenance resets
- ✓ OE-style diagnostics and broad vehicle coverage
Why We Recommend It
It delivers many pro-level features at a friendlier price. If you want Autel’s active test power without stepping up to the very expensive scanners, this is a sensible pick.
Best For
Best for independent shops and advanced DIYers wanting robust active tests without the top-tier price.
Pros and Cons
Pros:
- Strong active testing suite
- Well-built and intuitive interface
- Good value for feature set
Cons:
- Not as fast as flagship Autel hardware
- Some advanced features may need subscriptions or updates
Customer Reviews
Customer Review: Absolutely love my new scanner! Easy to use, well built, and It can perform so many more functions than my basic blue driver scanner, plus some extra testing features. I was able to use this to set the camshaft timing on my truck, and with advanced scanning and live diagnostics found out that I had
Customer Review: Just got the Autel MX808S scanner and I’m really happy with it! My buddy had the regular MX808, which was cool, but I needed the EVAP solenoid activation, and the S model does that no problem. It’s way easier to use than those phone apps with a dongle—those can be such a pain. The bidirectional stuf
6. VDIAGTOOL VD70S Bidirectional OBD2 Scanner with 36 Resets, All-System Diagnostics, ECU Coding, CAN FD DoIP
The VDIAGTOOL VD70S brings a professional feature set—36 resets, ECU coding and wireless range—to budget-minded pros. It’s designed for flexibility, with strong wireless connectivity and a wide reset list.
Key Features That Stand Out
- ✓ 36 reset and service functions for maintenance and adaptations
- ✓ ECU coding for module programming
- ✓ Wireless range and CAN FD / DoIP support
Why We Recommend It
For those who need ECU coding and many service functions without a huge investment, the VD70S performs well. The wireless freedom is a practical benefit in busy shops.
Best For
Best for home mechanics and small shops needing ECU coding and multiple resets on a budget.
Pros and Cons
Pros:
- Good set of professional features for the money
- Wireless convenience and solid connectivity
- Clear live data and test functions
Cons:
- Software updates may be required for new vehicles
- Manuals and support can be limited compared to bigger brands
Customer Reviews
Customer Review: Ok, if you are reading this, then you are probably considering buying this tool. Go ahead & buy it. I am a serious DIY home mechanic. I work on all makes & models of cars. So I need a scan tool that covers all makes & models as well as perform a variety of functions. This scan tool can do that. P
Customer Review: This is one of the best OBD-II diagnostics troubleshooting tool for the average car tech or shop that work on a range of car models and years.Wireless connectivity makes a huge difference. This allows you to have the tool outside of the vehicle and working under the hood.It displays live sensor data
7. LAUNCH X431 CRP919E Bidirectional OBD2 Scanner, Full-System Diagnostics, 35 Service Functions, CAN FD DoIP, Active Tests
The LAUNCH X431 CRP919E offers deep diagnostics and many service functions with a reputation for reliable active tests. It’s a strong alternative to other pro-level tools with similar capabilities.
Key Features That Stand Out
- ✓ Full-system diagnostics and graphing PIDs
- ✓ 35+ service functions including active tests
- ✓ CAN FD and DoIP support for modern vehicles
Why We Recommend It
LAUNCH tools are known for dependable diagnostics and strong support for workshop workflows. This unit gives a broad active test set and intuitive graphing for troubleshooting.
Best For
Best for independent repair shops and technicians who need reliable active testing and graphing features.
Pros and Cons
Pros:
- Robust active test library
- Good OEM-level diagnostics in many regions
- User-friendly interface and graphing
Cons:
- Higher learning curve for advanced ECU functions
- Occasional vehicle-specific limitations
Customer Reviews
Customer Review: Extremely satisfied with this scanner. Launch brand came recommended to me by a friend that is a mechanic and it does not disappoint. You can view PIDs like most scanners but the graphing function has been a huge benefit. It is bi-directional so you can actuate functions on the vehicle – I have foun
Customer Review: For several years, my go-to diagnostic tool was the LAUNCH Creader Elite For BMW OBD2 Scanner. IIt was perfect for what I needed at the time—mainly, a check engine light on my 2004 BMW. After successfully working on the BMW, I started to feel more confident tackling issues with our other cars—a Ford
8. XTOOL Anyscan A30M Wireless Bidirectional OBD2 Scanner, All-System Diagnostics, 26 Resets, Live Data, CAN FD, FCA AutoAuth
The XTOOL Anyscan A30M is a wireless companion-type scanner with many service resets and FCA AutoAuth support. It’s handy for techs who like a compact tool that still runs a long list of service functions.
Key Features That Stand Out
- ✓ Wireless operation and smartphone integration
- ✓ 26 reset and maintenance functions
- ✓ Live data and CAN FD compatibility
Why We Recommend It
If you want a pocketable scanner with solid service coverage and wireless convenience, the A30M is a sensible choice. It’s great for travel and multi-car owners.
Best For
Best for mobile technicians and owners who need wireless diagnostics on the go.
Pros and Cons
Pros:
- Compact and lightweight
- Good set of resets for daily maintenance
- FCA AutoAuth support for certain models
Cons:
- Relies on phone display for UI
- Not as many advanced tests as full tablet units
Customer Reviews
Customer Review: The media could not be loaded.OK the first thing to know is that this device is a companion to your cell phone, it uses the display on your phone for all the readings and commands. Second thing to know is it does not come with any printed instructions at all, but there are QR codes on the side
Customer Review: The media could not be loaded.Compact and Powerful, I’ve been wanting to get a scanner that I can take with me when I travel. I have several cars some are older, and when I go on trips that are 6 or more hours, I’m always worried. Not any more! the Anyscan A30M turned out to be great, I installed t
9. AI Powered Bluetooth Bidirectional OBD2 Scanner for iOS Android, real time data, check engine codes, no subscription
This compact AI-powered Bluetooth scanner focuses on simplicity and clear diagnostics. It uses on-device or cloud AI to translate codes into actionable reports without subscription fees.
Key Features That Stand Out
- ✓ AI-driven code explanations and health reports
- ✓ Real-time data graphs on phone
- ✓ No subscription required for core features
Why We Recommend It
For owners who want quick, easy-to-understand diagnostics, the AI features are helpful. It makes fault codes less intimidating for non-tech users.
Best For
Best for beginners and owners who want instant, plain-language diagnostics without subscriptions.
Pros and Cons
Pros:
- Simple to use with clear AI reports
- No ongoing fees for core functionality
- Very compact and unobtrusive
Cons:
- Limited deep ECU coding capabilities
- AI interpretation may occasionally be generic
Customer Reviews
Customer Review: My husband really loves this Bluetooth OBD2 scanner and uses it all the time in his car. It connects quickly to his phone and is very easy to use, even if you’re not a mechanic. The app gives clear and accurate information about the car, helps identify engine codes, and saves a lot of time and money
Customer Review: This OBD2 scanner is super easy to use and connects instantly to my phone. The AI reports make error codes simple to understand, even for beginners. I love seeing real-time data and clearing the check engine light myself. No subscription fee is a big plus. It’s compact, reliable, and gives me real p
10. XTOOL D5S Bidirectional OBD2 Code Reader for Cars Trucks, 16 Resets, Crank Throttle Relearn, EPB, CAN FD
The XTOOL D5S is a compact code reader that covers the essentials plus 16 service functions like throttle relearn and EPB. It’s a good everyday tool for owners and small shops.
Key Features That Stand Out
- ✓ 16 service functions including crank/throttle relearn and EPB
- ✓ Full OBD2 code reading and live data
- ✓ CAN FD support and clear device UI
Why We Recommend It
It’s a reliable, easy-to-use reader that handles common maintenance tasks and diagnostic reads. For many users this covers everything they need without complexity.
Best For
Best for DIYers and small shops that need a practical mid-level bidirectional reader.
Pros and Cons
Pros:
- Clean UI and straightforward controls
- Good balance of functions for the price
- Portable and durable for workshop use
Cons:
- Fewer advanced tests than high-end models
- Some manufacturers require OEM tools for specific tasks
Customer Reviews
Customer Review: I own vehicles from a wide range of years and needed a scanner to cover late 90’s OBD II systems. I reached out to Xtool to see if the D5S scanner would perform a Crankshaft Sensor Relearn on my ‘98 Chevy truck, and they were able to confirm it would after being provided with the VIN.I set up the sc
Customer Review: Update: I’ve been able to use this scanner a bit now and it has impressed me quite a bit. The screen is clear and bright, touch controls are responsive and navigating menus is a breeze.Outside of Amazon sending me a used and returned unit it has performed flawlessly. It pulls up codes pretty quickly
Complete Buying Guide for Best Bidirectional Obd2 Scanner
Essential Factors We Consider
We looked at vehicle coverage, active/bidirectional test capabilities, ease of use, connection type (wired, Bluetooth, wireless VCI), update policy, and value. A good bidirectional scanner should do more than read codes: it should command components, run relearns and support common service resets.
Budget Planning
Budget scanners (dongles) are great for simple diagnostics and light bidirectional functions. Mid-range tablet-style tools offer more built-in tests and faster workflows. High-end scanners give near-OEM features and active tests but cost significantly more. Pick the level that matches how complex your repairs are.
Final Thoughts
Choose a scanner that matches your skill level and vehicle types. For one-car DIYers, a compact Bluetooth unit may be perfect. For shops, invest in a tablet-style scanner with broad active tests and good update support.
Frequently Asked Questions
Q: What is a bidirectional OBD2 scanner?
A: A bidirectional OBD2 scanner can both read data from a vehicle and send commands to modules to run active tests, actuate components, or perform relearns and resets.
Q: Do I need a professional-level scanner for home use?
A: Not usually. Many mid-range scanners cover common resets and active tests useful for DIYers. Only buy professional-level hardware if you need deep ECU coding or frequent OEM-level work.
Q: Are Bluetooth dongles as reliable as tablet scanners?
A: Bluetooth dongles are convenient and improving, but tablets often have faster hardware, larger screens, and more built-in tests. Dongles rely on phone apps and the phone’s stability.
Q: How important are software updates?
A: Very important. Regular updates add coverage for newer vehicles and fix software bugs. Check the vendor’s update policy before buying.
Thanks for reading. If you want a recommended starting point, the XTOOL D7S balances price and features very well. Click any of the “Check Price on Amazon” buttons above to compare current prices and read full specs before you buy.