Top 5 Best OBD2 Bidirectional Scanners for 2025

Looking for a top-tier OBD2 bidirectional scanner to take control of your vehicle’s diagnostics? 

Foxwell consistently delivers reliable tools known for ease of use, comprehensive features, and excellent support.

The right tool is essential, whether for weekend repairs or managing a small fleet. OBD2 bidirectional scanners go beyond reading codes: they actively test components and systems right from your garage.

We've rounded up five of Foxwell's best OBD2 bidirectional scanners for 2025, from pro-grade tablets to capable budget options. These tools blend user-friendly design with advanced features, offering serious diagnostics without the shop price tag.

What Is a Bidirectional Scanner?

Forget merely reading error codes. A bidirectional scanner, or active test scan tool, empowers you. It's a two-way communication device, pulling data from your vehicle's control modules and sending commands back.

This active dialogue transforms passive diagnostics into proactive problem-solving, allowing you to:

• Activate components: Turn on fuel pumps, fans, or window motors to confirm function.
• Perform system tests: Conduct injector balance or EVAP leak tests to pinpoint issues.
• Calibrate sensors: Fine-tune steering angle sensors after repairs.
• Reset electronic systems: Reset electronic parking brakes or perform throttle body relearns for optimal performance.

In essence, bidirectional control is indispensable for troubleshooting modern vehicles. It's the difference between guessing and truly understanding.

 

What to Look For in an OBD2 Bidirectional Scanner

Choosing the right scanner means selecting a tool that works for you. Focus on these key factors:

• Vehicle Coverage & Updates: Does it support your cars? Crucially, seek free lifetime software updates to ensure it stays current and saves you money long-term.
• Bidirectional Control: This is the core. Verify it performs the specific active tests, calibrations, and resets you need (e.g., injector coding, DPF regeneration, EPB resets).
• Ease of Use & Form Factor: Prioritize an intuitive interface. Decide on wireless for mobility, wired for reliability, or a simpler button-operated unit for basic needs.
• System Depth: How deep can it go? Look for full-system diagnostics, not just basic engine codes, for a complete picture.
• Integrated Special Functions: If you do specific jobs like TPMS service, ensure the scanner has those built-in.
• Durability & Support: Pick a robust tool built for the garage. Good customer support and warranty are non-negotiable for peace of mind.

By focusing on these points, you'll confidently choose a bidirectional scanner that elevates your diagnostic game.

Related Reading: OBD2 Scanner with Bidirectional Controls

1. Foxwell NT809BT – Best Overall Foxwell OBD2 Bidirectional Scanner for DIYers

• What is NT809BT? A top-tier bluetooth scanner for car, doubling as a wireless, touchscreen diagnostic tablet offering comprehensive full-system diagnostics and robust bidirectional control via Bluetooth. 
• Who's it for? DIY enthusiasts and part-time technicians needing shop-level features and wireless convenience without the pro price.
• What makes it stand out? Broad vehicle coverage (over 10,000 global vehicles) combined with wireless freedom and a user-friendly Android interface.
• Must-have feature: Wireless Bluetooth VCI for untethered diagnostics, allowing free movement around the vehicle.

Looking for a more professional-level tool? Check out our full review of the NT710. 

2. Foxwell NT809TS – Best Foxwell for TPMS + Bidirectional Control

• What is NT809TS ? An advanced wireless touchscreen scanner integrating full bidirectional control with complete TPMS programming capabilities, building on the NT809BT's features. 
• Who's it for? Technicians and serious DIYers handling tire rotations, sensor replacements, or light-duty fleet maintenance, requiring both advanced diagnostics and comprehensive TPMS service.
• What makes it stand out? Uniquely combines extensive diagnostic power with full TPMS service functions (activation, relearn, programming) in one integrated device.
• Must-have feature: Integrated TPMS activation and programming for 98% of sensors, including Foxwell's T10.

3. Foxwell NT710 – Best Compact Foxwell Pro-Level Scanner

• What is NT710? A compact, wired touchscreen scanner from the Foxwell AutoMaster Pro line, offering deep, brand-specific diagnostic access and professional-grade bidirectional functions.
• Who's it for? Enthusiasts or pros focused on specific vehicle families (e.g., BMW, Mercedes-Benz, GM) needing in-depth, OE-level access and customization.
• What makes it stand out? Provides genuine OE-level system access, adaptations, and control module coding for particular brands in a portable, handheld form.
• Must-have feature: True professional-grade bidirectional control and ECU coding support, often tailored for specific vehicle makes.

4. Foxwell NT650 Elite – Best Budget Foxwell for Service Resets & Core Diagnostics

• What is NT650? A versatile, handheld wired scanner focused on 25+ essential maintenance reset services, plus core engine, ABS, and SRS system diagnostics with some bidirectional capabilities.
• Who's it for? DIYers and home mechanics needing a cost-effective tool for common service functions (oil resets, EPB, DPF regen) and basic system diagnostics with active tests for ABS/SRS.
• What makes it stand out? Impressive array of specialized service functions typically found in pricier tools, making it a powerful maintenance assistant.
• Must-have feature: Its extensive suite of 25+ maintenance reset services, offering great value for routine car care.

5. Foxwell NT530 – Best Budget Foxwell for Brand-Specific Diagnostics

• What is NT530? A compact, wired handheld scanner for OE-level diagnosis on a single, user-selectable vehicle make, offering full system access, bidirectional control, and advanced service functions for that brand.
• Who's it for? Enthusiasts or mechanics primarily working on one car brand who need deep, comprehensive diagnostic and maintenance without a multi-brand professional tool.
• What makes it stand out? Delivers OE-level diagnostic depth and bidirectional control for a chosen brand at a budget-friendly price, rivaling dealer tools for specific applications.
• Must-have feature: OE-level diagnosis and bidirectional control specifically tailored for a single car brand, maximizing depth for a focused user.

FAQs: Choosing an OBD2 Bidirectional Scanner

Q: Do all OBD2 scanners have bidirectional capabilities?

No. Many basic OBD2 scanners only read and clear codes. True bidirectional tools send commands to components, enabling active testing and deeper diagnostics.

Q: Can I use these scanners with my phone?

Some modern tools work with smartphone apps. However, many professional bidirectional scanners are standalone devices with dedicated functionality. Verify app support if it's a key feature for you.

Q: Will these scanners work on European, Asian, and domestic vehicles?

Most reputable bidirectional scanners offer broad global vehicle coverage. However, advanced functions can vary by make/model. Always check the compatibility list before buying.

Q: Are software updates free for these scanners?

It varies. Some high-quality scanners, like those from Foxwell, offer free updates. Others might provide limited free updates followed by a subscription. Confirm the update policy with the brand of your OBD II scanner. 

 

 

Final Thoughts

Equipping yourself with a Foxwell OBD2 bidirectional scanner means taking command of your vehicle's health, allowing you to test, calibrate, and reset systems with confidence, just like a seasoned professional.

Foxwell stands out by combining powerful features with user-friendly designs and, crucially, offering free software updates. This ensures your investment keeps paying dividends for years.

Whether you need the comprehensive wireless capabilities of the NT809BT and NT809TS, the deep brand-specific access of the NT710 or NT530, or the robust service functions of the NT650 Elite, Foxwell offers a trusted solution. By choosing Foxwell, you gain a partner in vehicle maintenance, backed by continuous innovation and reliable support.

➤ Foxwell Scanner