The best OBD2 scanners are essential tools for modern car owners, offering a direct line to your vehicle’s onboard computer. Whether you’re facing a mysterious dashboard light or suspect engine trouble, these scanners provide access to the crucial data your car is constantly monitoring. Instead of relying solely on expensive mechanics for diagnostics, an OBD2 scanner empowers you to understand and address car issues yourself.
However, the market is flooded with OBD2 scanners, varying significantly in features, capabilities, and ease of use. Choosing the right one can be daunting, especially for beginners. Fortunately, with years of hands-on testing experience, we’ve identified the top OBD2 scanners of 2023 that are truly worth your investment. This guide will walk you through the best options available, helping you make an informed decision. For those new to OBD2 technology, we’ll also delve into how these scanners work and decipher those often-confusing error codes.
Currently, our top pick is the Innova 6100P, standing out with its advanced predictive capabilities and comprehensive repair information. For those seeking wireless convenience, the Topdon TopScan offers exceptional features in a compact, mobile-friendly design. And if budget is a primary concern, the Launch CR529, priced around $40, provides incredible value.
Here’s a curated list of the best OBD2 scanners you can purchase in 2023:
The Quick List: Top OBD2 Scanners of 2023
For a quick overview, here are our recommended best OBD2 scanners for 2023, based on rigorous testing. Continue scrolling for detailed reviews of each product, including their standout features and why they excel.
Compare the Best OBD2 Scanners
1. Innova 6100P: Best OBD2 Scanner Overall
This handheld scanner brings professional-grade diagnostics to your garage. Beyond reading fault codes, it integrates with the Innova app to provide detailed problem descriptions, necessary parts, and estimated repair costs. Its predictive features are invaluable for proactive car maintenance.
2. Topdon TopScan: Best Mobile OBD2 Scanner
The Topdon TopScan sets up effortlessly via Bluetooth and packs professional-level features into a small package. Expect diagnostics, repair guidance, parts lists, and predictive maintenance alerts, all accessible from your smartphone.
Explore Topdon TopScan Features
3. Launch CR529: Best Budget OBD2 Scanner
The Launch CR529 is compact yet powerful, delivering essential OBD2 functions alongside higher-end features typically found in more expensive models. Lifetime support and updates add exceptional value to this budget-friendly scanner.
4. Topdon Phoenix Lite 2: Best Rugged OBD2 Scanner
Resembling a robust handheld gaming device, the Topdon Phoenix Lite 2 is built for durability and professional use. It offers advanced features suitable for both experienced mechanics and DIY enthusiasts seeking a resilient and powerful scanner.
Discover Topdon Phoenix Lite 2’s Capabilities
5. Ancel BD310: Best Dual-Purpose OBD2 Scanner
The Ancel BD310 excels as both an OBD2 scanner and an auxiliary dashboard display. Its sleek design, smartphone compatibility, and affordable price make it a versatile tool for monitoring and diagnosing your vehicle.
6. Carly OBD2 Scanner: Best OBD2 Scanner with Companion App
The Carly OBD2 Scanner’s value is highly dependent on your car make, particularly excelling with VW, BMW, and Ford. Its standout feature is its exceptional companion app, offering extensive customization and professional-grade diagnostic tests.
Explore Carly OBD2 Scanner App Features
Deep Dive: Best OBD2 Scanners in Detail
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1. Innova 6100P: Best OBD2 Scanner Overall
Image Credit: Tom’s Guide
Key Features:
- Display: 2.8-inch Color Screen
- Connectivity: Handheld, App-Based
- I/M Readiness Test: Yes
- Live Data Display: Yes
- Keys: 9 Buttons
- Warranty: 1 Year
Pros:
- Portable and user-friendly design.
- Resets battery and oil maintenance lights.
- Offers both handheld and app-based diagnostics.
- Provides repair instructions and parts information.
Cons:
- Text-based interface may lack visual appeal for some users.
- Buttons require firm presses.
The Innova 6100P truly elevates the DIY mechanic experience, making automotive diagnostics feel remarkably professional, regardless of your experience level. Its ease of use and comprehensive features are genuinely impressive.
Setting up the Innova 6100P is straightforward, plugging directly into your car’s OBD port and initiating immediately. The hybrid functionality is a major advantage, allowing you to choose between the dedicated handheld scanner and Innova’s intuitive companion app. The app’s predictive maintenance feature is a standout, forecasting potential component failures, which is invaluable for preventative maintenance and budgeting for future repairs.
For around $120, the Innova 6100P delivers exceptional value. Beyond predictive diagnostics, it offers live data monitoring, reads and clears fault codes, performs pre-inspection I/M readiness checks, and includes a generous 72-inch cable for easy access.
Read our full Innova 6100P Review
2. Topdon TopScan: Best Mobile OBD2 Scanner
Image Credit: Topdon
Key Features:
- Display: App-Based (via Bluetooth)
- Connectivity: Bluetooth
- I/M Readiness Test: Yes
- Live Data Display: Yes
- Keys: None (App-Controlled)
- Warranty: 2 Years
Pros:
- Extensive vehicle diagnostic coverage.
- Real-time live data monitoring.
- Unique performance metrics.
- Comprehensive maintenance item coverage.
Cons:
- Larger transmitter module.
- Advanced features may require a subscription after the first year.
Don’t let the unassuming appearance of the Topdon TopScan fool you; this compact scanner is packed with features that surpass many of its competitors. It’s more than just a basic Bluetooth OBD2 module; it’s a powerful tool that expands the diagnostic capabilities accessible from your smartphone.
Beyond standard fault code reading and I/M readiness tests, the TopScan excels in performance and efficiency diagnostics. It can even estimate horsepower and torque, features rarely found in scanners in this price range. Whether you’re aiming to optimize your car’s performance or ensure it remains in top condition, the TopScan is an invaluable addition to your toolkit.
Explore the full Topdon TopScan Review
3. Launch CR529: Best Budget OBD2 Scanner
Image Credit: Future
Key Features:
- Display: 2.8-inch Color Screen
- Connectivity: Handheld
- I/M Readiness Test: Yes
- Live Data Display: Yes
- Keys: 8 Buttons
- Warranty: 1 Year
Pros:
- Extremely affordable.
- Lifetime free updates.
- Easy pre-inspection reporting.
Cons:
- Lacks manufacturer-specific diagnostic codes.
- Feels somewhat heavy.
- Limited 1-year warranty.
The Launch CR529 stands out as the best value OBD2 scanner on the market. Its low price of around $38 is remarkable, especially considering the range of diagnostic features it offers. It truly exceeds expectations for a scanner in this price bracket.
While compromises are expected at this price point, such as the absence of manufacturer-specific codes and a slightly heavy feel, the CR529 still delivers essential functionalities. It provides live data, an instant inspection feature, and surprisingly detailed insights into your vehicle’s systems. The inclusion of lifetime updates is a significant benefit, ensuring long-term usability without subscription fees.
Though the CR529 might not satisfy professional mechanics seeking advanced features, it’s an excellent choice for everyday car owners and DIY enthusiasts looking for a reliable and budget-friendly diagnostic tool.
Read the complete Launch CR529 Review
4. Topdon Phoenix Lite 2: Best Rugged OBD2 Scanner
Image Credit: Future
Key Features:
- Display: 8-inch Color Touchscreen
- Connectivity: Bluetooth, Wi-Fi, Handheld
- I/M Readiness Test: Yes
- Live Data Display: Yes
- Keys: Touchscreen Interface
- Warranty: 2 Years
Pros:
- Professional-grade OBD2 scanner capabilities.
- Versatile hybrid design with handheld, Wi-Fi, and Bluetooth connectivity.
- Large 8-inch touchscreen display.
- Extensive range of diagnostic tests and live data options.
- Includes adapters and a protective hard case.
Cons:
- Bulky and heavy, potentially cumbersome to handle.
- Higher price point.
- Subscription required for updates after two years.
The Topdon Phoenix Lite 2 is a significant investment, positioned above many other capable OBD2 scanners, but it justifies its price with a wealth of features. It effectively bridges the gap between amateur and professional diagnostic tools.
A standout feature is its wireless operation; the control pad connects via Bluetooth to a receiver plugged into the OBD port, allowing for exceptional mobility around the vehicle. While the scanner itself is substantial in size and weight, its rugged construction and built-in kickstand are ideal for workshop environments.
It offers advanced features like live data graphing, comprehensive fault code information, and more, exceeding the capabilities of most budget scanners. However, be aware of the subscription model for firmware updates after the initial two years, which costs $495 annually.
Explore the in-depth Topdon Phoenix 2 Lite Review
5. Ancel BD310: Best Dual-Purpose OBD2 Scanner
Image Credit: Tom’s Guide
Key Features:
- Display: 2-inch Color Screen
- Connectivity: Bluetooth, Handheld
- I/M Readiness Test: Yes
- Live Data Display: Yes
- Keys: 4 Buttons
- Warranty: 3 Years
Pros:
- Lightweight and compact for easy storage.
- Functions as both an OBD2 scanner and a secondary car display.
- Offers handheld and Bluetooth scanning versatility.
Cons:
- Minimalist interface might be less intuitive for some.
- Small 2-inch screen.
The Ancel BD310 is a uniquely versatile OBD2 scanner, functioning as a standard handheld device and also connecting to smartphones via Bluetooth. Its standout capability is serving as a secondary display, projecting crucial engine data directly in your car’s cabin.
Its compact and lightweight design makes the BD310 exceptionally portable, easily storable in a glovebox. While the 2-inch screen is small and the four-button interface is somewhat basic, these design choices contribute to its portability without significantly hindering its diagnostic capabilities.
Equipped with a 56-inch cable, it provides ample reach when working under the hood. The BD310 performs essential functions like I/M readiness tests and displays performance metrics including coolant temperature, engine timing, and speed.
View the full Ancel BD310 Review
6. Carly OBD2 Scanner: Best OBD2 Scanner with Companion App
Image Credit: Carly
Key Features:
- Display: App-Based
- Connectivity: Bluetooth
- I/M Readiness Test: No
- Live Data Display: Yes
- Keys: None (App-Controlled)
- Warranty: Lifetime
Pros:
- User-friendly app interface.
- Extensive customization options.
- Live data display and logging.
- Maintenance and repair support.
- Lifetime warranty and updates.
Cons:
- Feature availability varies significantly by car make and model.
- Subscription required for full app functionality can be costly.
The Carly OBD2 Scanner distinguishes itself with its exceptional companion app. While many Bluetooth scanners offer basic apps, Carly provides one of the most feature-rich and user-friendly app experiences available.
Beyond basic fault diagnosis and clearing trouble codes, the app provides repair assistance, tools to assess used cars for potential issues, and a lifetime warranty—a rare and valuable offering.
However, the functionality of the Carly scanner is heavily dependent on your vehicle’s make and model. It is most effective with brands like VW, BMW, and Ford. Also, accessing the full suite of features beyond basic OBD functions requires an ongoing subscription, which can add to the overall cost.
Read the detailed Carly OBD Scanner Review
Other OBD2 Scanners We Tested
Image Credit: Tom’s Guide
7. Innova CarScan Mobile 1000
The Innova CarScan Mobile 1000 is a highly innovative Bluetooth OBD2 scanner, noted for its ease of setup and compact design. It incorporates many advanced diagnostic features found in larger Innova models.
Key Features:
- Display: App-Based
- Connectivity: Bluetooth
- I/M Readiness Test: Yes
- Live Data Display: Yes
- Keys: None (App-Controlled)
- Warranty: 1 Year
Pros:
- Simple setup process.
- Compact and portable.
- Excellent companion app.
- Predictive diagnostics and repair suggestions.
- Functions as a standalone gauge display.
Cons:
- Utilizes two separate apps, which can be inconvenient.
- Apps contain advertisements.
The CarScan Mobile 1000 delivers a broad spectrum of diagnostic capabilities, including Innova’s predictive software for identifying potential issues before they become critical. It also offers part and repair suggestions, streamlining the repair process. Additionally, it can transform your smartphone into a secondary instrument panel for real-time vehicle data.
View the full Innova CarScan Mobile 1000 Review
Image Credit: Tom’s Guide
8. ThinkCar ThinkDiag TKD01
The ThinkCar ThinkDiag TKD01 is a reliable Bluetooth OBD2 scanner, albeit with a subscription-based service model. It offers broad compatibility and advanced diagnostic features.
Key Features:
- Display: App-Based
- Connectivity: Bluetooth
- I/M Readiness Test: Yes
- Live Data Display: Yes
- Keys: None (App-Controlled)
- Warranty: 1 Year
Pros:
- Reads enhanced diagnostic codes.
- Offers numerous optional functionalities.
- Includes a hard carry case for protection.
Cons:
- Requires a $40 annual app subscription after the first year.
- Relatively heavy and bulky.
- Setup can be somewhat complex.
The ThinkDiag app supports profiles for over 100 vehicle manufacturers, making it highly effective for accessing manufacturer-specific error codes. It displays extended fault codes and efficiently handles routine maintenance light resets and system monitoring. Like Innova, it includes predictive diagnostics but lacks repair guidance. Note the annual subscription fee required after the first year to maintain full access.
Read our comprehensive ThinkCar ThinkDiag TKD01 Review
Image Credit: Tom’s Guide
9. Autel AutoLink AL539
The Autel AutoLink AL539 is uniquely equipped with a built-in multimeter, making it ideal for diagnosing electrical issues in vehicles.
Key Features:
- Display: 2.8-inch Color Screen
- Connectivity: Handheld
- I/M Readiness Test: Yes
- Live Data Display: Yes
- Keys: 8 Buttons
- Warranty: 1 Year
Pros:
- Integrated electrical multimeter.
- Battery testing capabilities.
- Includes a stand for hands-free operation.
Cons:
- Multimeter and OBD2 scanner functions cannot operate simultaneously.
- Battery requires charging.
The AL539’s integrated multimeter is a standout feature, enabling diagnosis of electrical problems such as wiring issues, shorts, alternator voltage, and fuse failures. However, the multimeter cannot be used while the device is functioning as an OBD2 scanner.
As an OBD2 scanner, it displays live data and performs thorough pre-inspection readiness tests. Faults are indicated with color-coded lights for quick interpretation. Its design is compact and user-friendly, featuring a pull-out stand and a long 58-inch cable. The interface is icon-based and easy to navigate.
View our full Autel AutoLink AL539 Review
Frequently Asked Questions About OBD2 Scanners
What is an OBD2 Scanner?
OBD2 scanners are diagnostic tools that mechanics and car owners use to interface with a vehicle’s onboard computer system via the OBD port. These scanners retrieve data, including Diagnostic Trouble Codes (DTCs), to help identify and understand vehicle problems. Basic scanners read and interpret these error codes, while more advanced models offer real-time system monitoring and predictive diagnostics.
What is the OBD2 Port?
The On-Board Diagnostics Version II (OBD2) port is a standardized interface found in virtually all passenger vehicles sold in the US since 1996, Canada since 1998, EU since 2004, and other regions like Australia and Mexico. This port allows devices like OBD2 scanners, insurance trackers, and dash cams to connect with the car’s computer system.
Learn how to locate the OBD2 port in your car. (North American vehicles)
Worldwide OBD2/EOBD port locations.
What is a DTC?
DTC stands for Diagnostic Trouble Code. It’s an error code generated by a vehicle’s OBD system when it detects a malfunction. OBD2 scanners read these codes, enabling users to diagnose vehicle issues. While many DTCs are standardized across manufacturers, some are vehicle-specific.
Understanding DTC Meanings
DTCs may appear cryptic, but they follow a structured format. The first character indicates the affected system:
- P – Powertrain (engine, transmission)
- B – Body (interior, comfort, safety systems)
- C – Chassis (braking, steering, suspension)
- U – Network (communication systems)
The second character is a digit: 0 for generic codes and 1 for manufacturer-specific codes.
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 and Idle Control
- 6 – Computer Output Circuits
- 7, 8, 9 – Transmission/Gearbox
- A, B, C – Hybrid Propulsion Systems
The fourth and fifth characters are numerical, detailing the specific fault within the identified system, ranging from 00 to 99. OBD2 scanners decode these codes into understandable descriptions, with advanced models providing more detailed information. While scanners help, online resources like Google can further clarify DTC meanings. It’s important to note that not all DTCs indicate severe problems; some may signal minor issues like a slightly elevated engine temperature.
Choosing the Right OBD2 Scanner for Your Needs
Utilizing an OBD2 scanner is the most efficient way to understand your vehicle’s health and diagnose issues quickly. It’s the same technology used by professionals, giving you direct access to your car’s diagnostic data.
When selecting an OBD2 scanner, consider two main types:
- Handheld Scanners: These come with an integrated screen and connect directly to the OBD port via a cable.
- Wireless Scanners: These plug into the OBD port and transmit data wirelessly via Bluetooth to a smartphone or tablet.
Both types offer high-performance options under $200, with some basic models available for under $30. Key factors to consider when choosing an OBD2 scanner include:
- Setup Ease: A scanner should be easy to set up and use quickly for timely diagnostics.
- Fault Code Explanation: The best scanners not only display fault codes but also provide clear explanations, aiding in DIY repairs or informed discussions with mechanics.
- I/M Readiness Check: Essential for emissions testing, this feature verifies if your vehicle will pass state inspections.
- Accuracy: Reliable and accurate readings are crucial for effective diagnostics.
- Size and Portability: A compact, durable scanner is more likely to be kept in the car for on-the-go diagnostics.
- Live Data Capability: Monitoring real-time engine data helps in diagnosing intermittent issues.
- Data Visualization: Graphs and gauges enhance data interpretation compared to raw numbers.
- Warranty and Support: Opt for scanners with robust warranties, ideally lifetime, and software updates to ensure longevity and compatibility with newer vehicles.
Deciding between a handheld or wireless scanner is your first step. Then, prioritize features like warranty, update availability, screen size (for handhelds), and extra functionalities such as multimeters or manufacturer-specific code access. With prices comparable to a single hour of mechanic labor, investing in a quality OBD2 scanner is a cost-effective decision.
Our OBD2 Scanner Testing Methodology
To evaluate OBD2 scanners, we utilized a 2014 Audi A4 Allroad, testing each device in various conditions over several weeks. The initial step was verifying VIN recognition for each scanner. For wireless models, we tested connectivity with devices like Apple iPads, Microsoft Surfaces, and Samsung Galaxy smartphones via Bluetooth or Wi-Fi. Handheld scanners were tested by direct OBD-II port connection.
Cord length and wireless range were measured. With the vehicle running, we monitored engine and system data, then simulated a fault by disconnecting the oil temperature sensor. We assessed each scanner’s ability to accurately report the fault, provide diagnostic details, and clear the error code after resolving the issue.
Road tests were conducted to evaluate live data display, including engine speed, timing, and coolant temperature, noting data presentation (numbers, graphs, gauges).
Our testing rigorously assessed setup, features, accuracy, and user-friendliness to determine the best OBD2 scanners of 2023.
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