For any car owner, the sight of a dashboard warning light can trigger immediate anxiety. Is it a minor glitch, or a sign of serious engine trouble? In the past, deciphering these automotive mysteries meant an immediate trip to a mechanic and often, a hefty bill, even if the issue was insignificant. Fortunately, with the advent of OBD2 scan tools, diagnosing your vehicle’s health is now more accessible and affordable than ever. Having a Top Obd2 Scan Tool in your garage equips you to understand your car’s signals, determine if professional help is truly needed, and potentially even resolve minor issues yourself.
However, the market is flooded with options, and choosing the right OBD2 scanner can feel overwhelming. They vary significantly in features, capabilities, and ease of use. That’s where we come in. At vcdstool.com, our team of automotive experts has rigorously tested a wide array of OBD2 scanners to bring you a curated list of the top OBD2 scan tools available today. We’ve evaluated them based on performance, features, user-friendliness, and value, to help you navigate the choices and find the perfect tool for your needs.
Our current top pick, the Innova 6100P, stands out for its comprehensive diagnostics, user-friendly interface, and predictive capabilities. For those seeking portability and wireless convenience, the Topdon TopScan Bluetooth scanner offers impressive features in a compact design. And for budget-conscious users, the Launch CR529 delivers exceptional value and features that rival scanners at much higher price points.
Below, we present our in-depth guide to the top OBD2 scan tools, helping you make an informed decision and empower yourself with the knowledge to understand and maintain your vehicle.
Here are our top picks for the best OBD2 scanners you can buy right now.
Tom Pritchard
Tom is a seasoned automotive tech reviewer, specializing in vehicle diagnostics and repair tools. He brings years of experience in evaluating OBD scanners and automotive technology.
The Quick List: Top OBD2 Scan Tools
Based on our hands-on testing, these are the top OBD2 scan tools you can purchase today. Continue scrolling for detailed reviews of each scanner and insights into why they earned their spot on our list.
- Innova 6100P
This top OBD2 scan tool empowers you with professional-level diagnostics. Beyond reading and clearing codes, it provides detailed problem descriptions, repair guidance, and even predictive analysis for potential future issues. Paired with the Innova app, it offers a comprehensive diagnostic experience.
Read more below
Best Mobile OBD2 Scanner
2. Topdon TopScan
This compact Bluetooth scanner is a top OBD2 scan tool for mobile diagnostics. Despite its size, it packs professional-grade features, offering live data, repair instructions, parts lists, and predictive diagnostics, all accessible through your smartphone.
Read more below
Best Budget OBD2 Scan Tool
3. Launch CR529
Offering incredible value, the Launch CR529 is a top OBD2 scan tool for those on a budget. This feature-rich scanner surpasses competitors in its price range, providing comprehensive diagnostics, live data, and lifetime software updates.
Read more below
Best Rugged OBD2 Scan Tool
4. Topdon Phoenix Lite 2
Built for durability, the Topdon Phoenix Lite 2 is a top OBD2 scan tool for demanding environments. This rugged scanner boasts professional-level features, a large touchscreen, and robust construction, making it ideal for both DIY enthusiasts and professional mechanics.
Read more below
Best Dual-Purpose OBD2 Scan Tool
5. Ancel BD310
The Ancel BD310 is a versatile top OBD2 scan tool that functions as both a scanner and a supplemental dashboard display. Compact and feature-rich, it offers Bluetooth connectivity and comprehensive diagnostic capabilities.
Read More below
Best OBD2 Scan Tool with Companion App
6. Carly OBD-II Scanner
The Carly OBD-II Scanner shines with its exceptional companion app. This top OBD2 scan tool offers extensive customization, professional-grade tests, and vehicle-specific features, particularly for VW, BMW, and Ford vehicles.
What Makes These OBD2 Scan Tools the Best?
At vcdstool.com, our product reviews are built on trust and thorough testing. Our team dedicates countless hours to analyzing and evaluating automotive tools, ensuring we recommend only the best options to our readers. Learn more about our rigorous testing and review process.
Best Overall OBD2 Scan Tool: Innova 6100P
[
(Image credit: Tom’s Guide)](https://target.georiot.com/Proxy.ashx?tsid=45724&GR_URL=https%3A%2F%2Famazon.com%2Fdp%2FB07ZL746BR%3Ftag%3Dhawk-future-20%26ascsubtag%3Dtomsguide-us-1334018753018446913-20)
1. Innova 6100P
The Innova 6100P is our pick for the best overall OBD2 scan tool, offering a blend of professional features and user-friendliness that makes even DIY mechanics feel like experts.
Expert Review:
The Innova 6100P consistently impressed us with its ability to simplify complex diagnostics. From setup to operation, this scanner is designed for ease of use without compromising on advanced features. It quickly connects to your vehicle’s OBD port and offers a seamless experience whether you use the handheld scanner or the companion app.
Key Specifications:
- Display: Color, 2.8 inches
- Connectivity: Bluetooth, Handheld
- I/M Readiness Test: Yes
- Live Data Display: Yes
- Keys: 9
- Warranty: 1 year
- Dimensions: 7.2 x 3.4 x 1.1 inches
- Weight: 6.5 ounces
Reasons to Buy:
- Compact and Portable: Easy to store and use in tight spaces.
- Resets Battery and Oil Lights: Handles common maintenance resets.
- Dual Operation: Use as a handheld or with the Innova app for added functionality.
- Repair Guidance: Provides repair instructions and parts information, enhancing DIY capabilities.
Reasons to Avoid:
- Text-Based Interface: Relies primarily on text, which may not be as visually intuitive for all users.
- Stiff Keys: Buttons require firm pressure, which some users may find less comfortable.
During testing, the Innova 6100P’s standout feature was its ability to make automotive diagnostics feel accessible to users of all skill levels. The predictive maintenance feature, accessible through the companion app, is particularly impressive, alerting you to potential component failures before they occur. This proactive approach to car maintenance, combined with live data, fault code readings, and pre-inspection readiness checks, makes the Innova 6100P a top OBD2 scan tool that justifies its price point.
Read our full Innova 6100P review.
Best Mobile OBD2 Scan Tool: Topdon TopScan
[
(Image credit: Topdon)
2. Topdon TopScan
The Topdon TopScan earns our title of best mobile OBD2 scan tool for its impressive diagnostic power packed into a small, Bluetooth-enabled device.
Expert Review:
Don’t let its unassuming appearance fool you; the Topdon TopScan is a powerhouse of automotive diagnostics. This Bluetooth OBD2 module goes far beyond basic code reading, offering features typically found in much larger and more expensive scanners. Setup is incredibly straightforward, and the app interface is intuitive, providing a seamless mobile diagnostic experience.
Key Specifications:
- Display: None (relies on smartphone)
- Connectivity: Bluetooth
- I/M Readiness Test: Yes
- Live Data Display: Yes
- Keys: None (app-based)
- Warranty: 2 years
- Dimensions: 3.2 x 2.0 x 1.1 inches
- Weight: 2.6 ounces
Reasons to Buy:
- Extensive Diagnostic Coverage: Offers comprehensive diagnostics for a wide range of vehicle systems.
- Live Data Monitoring: Provides real-time data for in-depth analysis.
- Performance Indicators: Includes unique performance metrics like horsepower and torque estimation.
- Maintenance Features: Covers various maintenance items beyond basic diagnostics.
Reasons to Avoid:
- Bulky Transmitter: The Bluetooth transmitter module is larger than some competitors.
- Subscription for Full Features: Some advanced features require a subscription after the first year.
The Topdon TopScan truly stands out for its ability to perform advanced checks typically reserved for professional-grade scanners. Its performance and efficiency checks, including horsepower and torque estimation, are remarkable for a device in this category. Whether you’re aiming to optimize your car’s performance or ensure its roadworthiness, the Topdon TopScan is a top OBD2 scan tool that offers exceptional value and capability.
Read our full Topdon TopScan review.
Best Budget OBD2 Scan Tool: Launch CR529
[
(Image credit: Future)
3. Launch CR529
The Launch CR529 is our top pick for the best budget OBD2 scan tool, delivering an impressive array of features at an incredibly affordable price point.
Expert Review:
The Launch CR529 redefines value in OBD2 scanners. Priced under $50, it offers diagnostic capabilities that rival scanners costing two to three times as much. We were particularly impressed by the level of features packed into such an inexpensive device. It’s a fantastic option for first-time scanner users or anyone looking for essential diagnostic functionality without breaking the bank.
Key Specifications:
- Display: Color, 2.8 inches
- Connectivity: Handheld
- I/M Readiness Test: Yes
- Live Data Display: Yes
- Keys: 8
- Warranty: 1 year
- Dimensions: 6.5 x 3.8 x 1.2 inches
- Weight: 11 ounces
Reasons to Buy:
- Extremely Affordable: Exceptional value for the price.
- Lifetime Updates: Ensures long-term usability without subscription fees.
- Easy Pre-Inspection Reports: Simplifies vehicle inspection readiness checks.
Reasons to Avoid:
- Limited Manufacturer-Specific Codes: Lacks some advanced manufacturer-specific diagnostic codes.
- Heavier Build: Feels slightly heavier compared to some other handheld scanners.
- 1-Year Warranty: Shorter warranty period than some competitors.
Despite minor compromises typical of budget scanners, the Launch CR529 delivers essential features like live data, instant inspection reports, and surprisingly detailed vehicle insights. Lifetime updates are a significant bonus, ensuring the scanner remains useful for years to come. While it may not cater to professional mechanics needing advanced manufacturer-specific diagnostics, the Launch CR529 is a top OBD2 scan tool for the average car owner seeking reliable and affordable vehicle diagnostics.
Read our full Launch CR529 review.
Best Pro-Level OBD2 Scan Tool: Topdon Phoenix Lite 2
[
(Image credit: Future)](https://target.georiot.com/Proxy.ashx?tsid=45724&GR_URL=https%3A%2F%2Famazon.com%2Fdp%2FB085TG89H4%3Ftag%3Dhawk-future-20%26ascsubtag%3Dtomsguide-us-5036066699464510124-20)
4. Topdon Phoenix Lite 2
The Topdon Phoenix Lite 2 is our choice for the best pro-level OBD2 scan tool, bridging the gap between amateur and professional diagnostics with its advanced features and robust design.
Expert Review:
The Topdon Phoenix Lite 2 is a significant investment, but it delivers professional-grade features that justify its price. This scanner is designed for both serious DIYers and professional mechanics, offering a comprehensive suite of diagnostic capabilities, wireless connectivity, and a rugged build that can withstand demanding workshop environments.
Key Specifications:
- Display: Color Touchscreen, 8 inches
- Connectivity: Bluetooth, Wi-Fi, Handheld
- I/M Readiness Test: Yes
- Live Data Display: Yes
- Keys: Touchscreen
- Warranty: 2 years
- Dimensions: 10.2 x 7.2 x 1.7 inches
- Weight: 2.6 pounds
Reasons to Buy:
- Near Professional Diagnostics: Offers advanced features comparable to professional-grade scanners.
- Versatile Connectivity: Hybrid handheld with Wi-Fi and Bluetooth for flexible use.
- Large Touchscreen Display: 8-inch touchscreen for easy navigation and data viewing.
- Extensive Diagnostic Tests: Comprehensive array of diagnostic tests and live data options.
- Included Accessories: Comes with adapters and a hard case for added value and protection.
Reasons to Avoid:
- Bulky and Heavy: Larger and heavier than many other OBD2 scanners.
- Expensive: Higher price point compared to consumer-grade scanners.
- Subscription for Updates: Requires a subscription for firmware updates after the initial two years.
The Topdon Phoenix Lite 2 excels in its wireless operation, allowing freedom of movement around the vehicle during diagnostics. Its large touchscreen, extensive diagnostic features, and rugged design make it ideal for professional use. While the subscription requirement for updates after two years is a consideration, the Topdon Phoenix Lite 2 remains a top OBD2 scan tool for those seeking professional-level capabilities.
Read our full Topdon Phoenix 2 Lite review.
Best Dual-Purpose OBD2 Scan Tool: Ancel BD310
[
Ancel BD310 (Image credit: Tom’s Guide)
5. Ancel BD310
The Ancel BD310 is our pick for the best dual-purpose OBD2 scan tool, offering the unique ability to function as both a diagnostic scanner and a secondary vehicle display.
Expert Review:
The Ancel BD310 stands out for its innovative dual functionality. Beyond standard OBD2 scanning, it can connect to your smartphone via Bluetooth and display real-time engine parameters, effectively turning your phone into a supplementary dashboard. Its compact size and ease of use make it a convenient tool for everyday vehicle monitoring and diagnostics.
Key Specifications:
- Display: Color, 2 inches
- Connectivity: Bluetooth, Handheld
- I/M Readiness Test: Yes
- Live Data Display: Yes
- Keys: 4
- Warranty: 3 years
- Dimensions: 5.1 x 2.4 x 0.6 inches
- Weight: 5.4 ounces
Reasons to Buy:
- Lightweight and Compact: Highly portable and easy to store in the glovebox.
- Dual Functionality: Works as both a scanner and a secondary car display.
- Versatile Connectivity: Offers handheld and Bluetooth scanning options.
Reasons to Avoid:
- Minimalist Interface: Interface design is basic and may lack visual appeal.
- Small Screen: 2-inch display can feel cramped for detailed data viewing.
The Ancel BD310’s ability to serve as a secondary display is a unique and practical feature. Its small size and light weight make it incredibly convenient to keep in your car. While the minimalist interface and small screen are limitations, the Ancel BD310 remains a top OBD2 scan tool for its dual functionality and portability.
Read our full Ancel BD310 review.
Best OBD2 Scan Tool with Companion App: Carly OBD-II Scanner
[
(Image credit: Carly)
6. Carly OBD-II Scanner
The Carly OBD-II Scanner is our choice for the best OBD2 scan tool with a companion app, thanks to its exceptionally user-friendly and feature-rich mobile application.
Expert Review:
The Carly OBD Scanner prioritizes the app experience, and it truly delivers. While many Bluetooth scanners offer basic apps, Carly provides one of the most comprehensive and customizable companion apps we’ve tested. The app enhances the scanner’s functionality significantly, offering advanced diagnostics, customization options, and even car buying assistance features.
Key Specifications:
- Display: None (relies on smartphone)
- Connectivity: Bluetooth
- I/M Readiness Test: No
- Live Data Display: Yes
- Keys: None (app-based)
- Warranty: Lifetime
- Dimensions: 2.9 x 1.5 x 0.7 inches
- Weight: 0.7 ounces
Reasons to Buy:
- User-Friendly App: Intuitive and easy-to-navigate app interface.
- Extensive Customization: Offers numerous customization options for vehicle-specific features.
- Live Data and Repair Help: Provides real-time data and repair guidance.
- Lifetime Warranty and Updates: Exceptional long-term support and value.
Reasons to Avoid:
- Vehicle Compatibility Limitations: Feature availability varies depending on car make and model.
- Subscription Cost: Advanced features require an ongoing subscription, which can add to the overall cost.
The Carly OBD Scanner’s app is its strongest selling point, offering a level of customization and advanced features rarely seen in companion apps. The lifetime warranty is also a significant benefit. However, it’s crucial to check vehicle compatibility before purchasing, as feature availability varies. Despite the subscription cost for advanced features, the Carly OBD-II Scanner remains a top OBD2 scan tool for its exceptional app experience and long-term value, especially for owners of compatible VW, BMW, and Ford vehicles.
Read our full Carly OBD scanner review.
Other OBD2 Scanners We’ve Tested
[
(Image credit: Tom’s Guide)
7. Innova CarScan Mobile 1000
The Innova CarScan Mobile 1000 is another excellent OBD2 scan tool from Innova, offering innovative diagnostic features in a compact Bluetooth design.
Expert Review:
The Innova CarScan Mobile 1000 impressed us with its ease of setup and innovative features, mirroring many of the advanced capabilities of larger Innova scanners in a smaller, wireless module. Its predictive diagnostics and repair suggestions are particularly noteworthy.
Key Specifications:
- Display: None (relies on smartphone)
- Connectivity: Bluetooth
- I/M Readiness Test: Yes
- Live Data Display: Yes
- Keys: None (app-based)
- Warranty: 1 year
- Dimensions: 2.0 x 1.5 x 1.0 inches
- Weight: 0.9 ounces
Reasons to Buy:
- Easy Setup: Incredibly simple and fast Bluetooth pairing.
- Compact Design: Small and highly portable.
- Excellent Companion App: Leverages Innova’s feature-rich app ecosystem.
- Predictive Diagnostics: Identifies potential problems before they become critical.
- Standalone Gauge Functionality: Can turn your phone into a secondary gauge display.
Reasons to Avoid:
- Two Apps Required: Relies on two separate Innova apps, which can be slightly inconvenient.
- Ad-Supported Apps: Both companion apps include advertisements.
The Innova CarScan Mobile 1000 delivers a wealth of diagnostic features in a small package. Its predictive maintenance and repair suggestions are standout features. While the reliance on two apps and the presence of ads are minor drawbacks, the Innova CarScan Mobile 1000 remains a top OBD2 scan tool for its innovation and portability.
Read the full Innova CarScan Mobile 1000 review
[
(Image credit: Tom’s Guide)](https://target.georiot.com/Proxy.ashx?tsid=45724&GR_URL=https%3A%2F%2Famazon.com%2Fdp%2FB08YWTJY4F%3Ftag%3Dhawk-future-20%26ascsubtag%3Dtomsguide-us-2553044707200010638-20)
8. ThinkCar ThinkDiag TKD01
The ThinkCar ThinkDiag TKD01 is a dependable OBD2 scan tool known for its ability to read enhanced codes, but it comes with an annual subscription.
Expert Review:
The ThinkCar ThinkDiag TKD01 is a robust Bluetooth OBD2 scanner with a focus on advanced diagnostics. Its ability to read enhanced, manufacturer-specific codes is a key strength. However, its larger size and annual subscription requirement are factors to consider.
Key Specifications:
- Display: None (relies on smartphone)
- Connectivity: Bluetooth
- I/M Readiness Test: Yes
- Live Data Display: Yes
- Keys: None (app-based)
- Warranty: 1 year
- Dimensions: 3.1 x 2.0 x 1.1 inches
- Weight: 2.7 ounces
Reasons to Buy:
- Enhanced Code Reading: Capable of reading manufacturer-specific and enhanced diagnostic codes.
- Optional Features: Offers a range of optional add-on features for expanded functionality.
- Hard Carry Case: Includes a hard case for protection and portability.
Reasons to Avoid:
- Subscription Required: $40 annual app subscription after the first year.
- Bulky Size: Larger size can make installation challenging in some vehicles.
- Complex Installation: Setup process can be less straightforward than some competitors.
The ThinkCar ThinkDiag TKD01’s ability to access enhanced codes and manufacturer-specific diagnostics makes it a powerful tool for in-depth vehicle analysis. However, the annual subscription fee and larger size are important considerations. While dependable, the ThinkCar ThinkDiag TKD01 may be best suited for users who require advanced diagnostic capabilities and are willing to commit to a subscription.
Read our full ThinkCar ThinkDiag TKD01 review.
[
Autel AutoLink AL539 (Image credit: Tom’s Guide)
9. Autel AutoLink AL539
The Autel AutoLink AL539 is a unique OBD2 scan tool that integrates a multimeter, making it ideal for diagnosing electrical problems.
Expert Review:
The Autel AutoLink AL539 stands out with its integrated multimeter, a feature rarely found in OBD2 scanners. This multimeter allows users to diagnose electrical issues like shorts, blown fuses, and alternator problems. While the multimeter cannot be used simultaneously with OBD2 scanning, it adds a valuable dimension to vehicle diagnostics.
Key Specifications:
- Display: Color, 2.8 inches
- Connectivity: Handheld
- I/M Readiness Test: Yes
- Live Data Display: Yes
- Keys: 8
- Warranty: 1 year
- Dimensions: 6.7 x 3.6 x 1.4 inches
- Weight: 10.6 ounces
Reasons to Buy:
- Integrated Multimeter: Features a built-in multimeter for electrical system diagnostics.
- Battery Testing: Includes battery testing capabilities.
- Built-in Stand: Features a convenient pull-out stand for hands-free operation.
Reasons to Avoid:
- Multimeter Limitations: OBD2 scanning and multimeter functions cannot be used simultaneously.
- Battery Charging: Requires battery charging, unlike some OBD2 scanners powered by the vehicle.
The Autel AutoLink AL539’s integrated multimeter is a unique and valuable feature for diagnosing electrical problems. Its user-friendly interface, live data display, and pre-inspection readiness checks are also noteworthy. While the inability to use the multimeter and OBD2 scanner simultaneously and the battery charging requirement are minor drawbacks, the Autel AutoLink AL539 remains a top OBD2 scan tool for users who need to diagnose both mechanical and electrical issues.
Read our full Autel AutoLink AL539 review.
Frequently Asked Questions About OBD2 Scan Tools
What is an OBD2 Scanner?
An OBD2 scanner is a diagnostic tool that connects to your vehicle’s On-Board Diagnostics II (OBD-II) port to access information from the car’s computer system. Mechanics use these tools to diagnose vehicle problems, and now, with affordable and user-friendly OBD2 scanners, car owners can access the same diagnostic information. Basic OBD2 scanners read and clear error codes, while more advanced models monitor real-time data and may even predict potential future issues.
What is the OBD2 Port?
The OBD2 port is a standardized connector found in virtually all passenger vehicles sold in the United States since 1996, and in other regions like Canada, Europe, Australia, and Mexico in subsequent years. This port provides access to the vehicle’s computer system for diagnostics and other purposes. OBD2 scanners, insurance black boxes, and even some dash cams connect to this port.
If you’re unsure of your OBD2 port’s location, resources are available to help you find your car’s OBD-II port in North American vehicles, and globally for OBD-II/EOBD ports.
What is a DTC?
DTC stands for Diagnostic Trouble Code. These are error codes generated by your car’s OBD system when it detects a problem. OBD2 scanners read these DTCs, allowing users to understand the nature of the issue. While many DTCs are standardized across vehicle makes and models, some manufacturers use proprietary codes.
Understanding DTCs: Decoding the Error Codes
DTCs may appear as a jumble of letters and numbers, but they follow a logical structure. The first letter indicates the affected vehicle system:
- P: Powertrain (engine, transmission)
- B: Body (interior, airbags, accessories)
- C: Chassis (braking, suspension, steering)
- U: Network (communication systems)
The second character is a number indicating code type:
- 0: Generic code (standard across manufacturers)
- 1: Manufacturer-specific code (unique to a particular brand)
The third character specifies the subsystem:
- 1: Fuel and air metering
- 2: Injector circuit (fuel and air metering)
- 3: Ignition system or misfire
- 4: Auxiliary emissions controls
- 5: Vehicle speed controls and idle control systems
- 6: Computer auxiliary outputs
- 7, 8, 9: Transmission and gearbox faults
- A, B, C: Hybrid-specific propulsion faults
The fourth and fifth characters pinpoint the specific fault, ranging from 0 to 99. OBD2 scanners translate these codes into understandable descriptions. However, more detailed information may require online searches. It’s important to remember that not all DTCs indicate critical problems; some may signal minor issues like slightly elevated engine temperature.
Choosing the Right OBD2 Scan Tool for Your Needs
For gaining insights into your vehicle’s operation and diagnosing potential issues, a top OBD2 scan tool is an invaluable asset. There are two primary types:
- Handheld OBD2 Scanners: Feature an integrated screen and cable for direct connection to the OBD2 port.
- Wireless OBD2 Scanners: Connect wirelessly via Bluetooth to smartphones or tablets for data display.
Both types offer high-performance options under $200, with some basic models priced below $30. Key factors to consider when choosing a top OBD2 scan tool include:
- Ease of Setup: A quick and straightforward setup process is crucial for timely diagnostics.
- Fault Code Explanation: The best scanners not only display fault codes but also provide clear explanations.
- I/M Readiness Check: Essential for verifying emissions system readiness for vehicle inspections.
- Accuracy: Reliable and accurate diagnostic results are paramount.
- Size and Weight: Portability and ease of handling are important for frequent use.
- Live Data: Real-time data monitoring aids in diagnosing intermittent issues.
- Data Graphs: Visual data representation enhances analysis and comparison.
- Warranty: Consider warranty duration and coverage for long-term peace of mind.
Deciding between handheld and wireless scanners depends on personal preference and intended use. Consider longevity and opt for scanners with lifetime updates to stay current with automotive technology. For handheld scanners, prioritize screen size and clarity. Ruggedized scanners are beneficial for demanding environments. Extra features like multimeters or manufacturer-specific code reading can also be valuable. Ultimately, a top OBD2 scan tool is a cost-effective investment, often priced less than an hour of mechanic labor.
How We Test OBD2 Scan Tools
Our OBD2 scanner testing process is rigorous and hands-on. We utilize a 2014 Audi A4 Allroad as our primary test vehicle, evaluating scanners in both garage and on-road scenarios over several weeks. Our testing methodology includes:
- VIN Verification: Ensuring each scanner accurately retrieves the vehicle identification number (VIN).
- Connectivity Testing: For wireless scanners, we test Bluetooth and Wi-Fi connectivity with various devices (Apple iPad Pro, Microsoft Surface, Samsung Galaxy S9+). Handheld scanners are tested for direct OBD2 port connection.
- Cord Length and Wireless Range Measurement: Assessing cord length for handheld scanners and wireless range for Bluetooth models.
- Live Data Monitoring: Monitoring engine and vital systems in real-time during vehicle operation.
- Fault Code Generation and Clearing: Simulating a fault by disconnecting the engine oil temperature sensor, verifying fault code detection, and testing the scanner’s ability to clear the code after resolving the issue.
- On-Road Data Display Evaluation: Assessing the scanner’s ability to display real-time data (engine speed, timing, coolant temperature) in various formats (numbers, graphs, gauges) during driving.
Our comprehensive testing process ensures that our top OBD2 scan tool recommendations are based on thorough evaluation and real-world performance. We strive to provide accurate and reliable reviews to help you make informed decisions when choosing the best OBD2 scanner for your needs.
