Unlocking your car’s hidden data is easier than ever with an OBD-II scanner. These ingenious devices connect to your vehicle’s onboard computer, providing access to a wealth of information about its health and performance. Whether you’re dealing with a mysterious dashboard light or suspect engine trouble, a Top Rated Obd2 Scanner can empower you to diagnose issues yourself, potentially saving money on professional mechanic fees.
However, the market is flooded with OBD-II scanners, and choosing the right one can be daunting. Don’t worry, we’ve rigorously tested a wide array of OBD-II scanners over the years to pinpoint the absolute best options available. Below, we present our curated list of top rated OBD2 scanners, alongside a helpful guide explaining how OBD-II scanners function and deciphering those cryptic error codes.
Currently, the Innova 6100P stands out as our top pick. It’s packed with advanced features, including predictive diagnostics to anticipate future problems and detailed repair information. For those preferring a wireless experience, the Topdon TopScan offers exceptional mobile functionality and diagnostic power. If budget is a primary concern, the Launch CR529, priced around $40, provides incredible value.
Here are our selections for the top rated OBD2 scanners you can purchase today.
Top Picks for Top Rated OBD2 Scanners
Based on extensive hands-on testing, here’s a quick rundown of the top rated OBD2 scanners available. Continue scrolling for detailed reviews of each model and insights into why they earned their top ratings.
innova 6100pInnova 6100P – Best Overall Top Rated OBD2 Scanner
1. Innova 6100P: Top Rated Overall OBD2 Scanner
This handheld scanner is designed to make even novice users feel like seasoned professionals. Beyond simply reading fault codes, the Innova 6100P, when paired with its companion app, provides detailed explanations of issues, necessary parts, and estimated repair costs. It also boasts predictive capabilities to alert you to potential problems before they escalate.
Learn More About Innova 6100P
topdon topscan mobile OBS2 scannerTopdon TopScan – Best Mobile Top Rated OBD2 Scanner
2. Topdon TopScan: Top Rated Mobile OBD2 Scanner
The Topdon TopScan stands out as the easiest Bluetooth scanner to set up in our tests. Despite its compact form, it delivers a suite of professional-grade features. Expect comprehensive diagnostics, repair guidance, parts lists, and even predictive functionalities to anticipate upcoming vehicle issues.
Explore Topdon TopScan Features
Launchcr529 obd-ii scanner on white backgroundLaunch CR529 – Best Cheap Top Rated OBD2 Scanner
3. Launch CR529: Top Rated Budget OBD2 Scanner
The Launch CR529 is a compact yet powerful OBD-II scanner that provides essential diagnostic capabilities and even some higher-end features typically found on more expensive models. Lifetime support and updates further enhance its value, making it an exceptional choice for budget-conscious users.
Discover Launch CR529’s Value
topdon phoenix lite 2 obd-ii scanner and tablet on a white backgroundTopdon Phoenix Lite 2 – Best Rugged Top Rated OBD2 Scanner4. Topdon Phoenix Lite 2: Top Rated Rugged OBD2 Scanner
Resembling a robust Nintendo Switch for your car, the Topdon Phoenix Lite 2 boasts a rugged, horizontal design built to withstand demanding environments. More than just durable, this scanner is packed with features catering to both professional mechanics and DIY enthusiasts seeking a powerful and resilient diagnostic tool.
See Topdon Phoenix Lite 2’s Durability
best obd2 scannersAncel BD310 – Best Dual-Purpose Top Rated OBD2 Scanner
5. Ancel BD310: Top Rated Dual-Purpose OBD2 Scanner
The Ancel BD310 offers versatility by functioning as both a standard OBD-II scanner and a supplementary dashboard display for engine data. Combining practical OBD-II diagnostics with real-time vehicle monitoring, the BD310 is a compelling option for users wanting more than just code reading.
Explore Ancel BD310’s Dual Functionality
carly obd scanner grid imageCarly OBD-II Scanner – Best Companion App with Top Rated OBD2 Scanner
6. Carly OBD-II Scanner: Top Rated OBD2 Scanner with Companion App
The Carly OBD-II Scanner’s value is heavily dependent on your car’s make, with VW, BMW, and Ford vehicles benefiting most from its extensive features. However, regardless of car, Carly’s standout feature is its exceptional companion app, offering a wealth of customization options and professional-level diagnostic tests.
Discover Carly OBD-II Scanner’s App
What are the top rated OBD2 scanners?
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Top Rated Overall OBD2 Scanner
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Innova 6100P Menu Screen (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-1172215389726161065-20)
1. Innova 6100P
Empowering DIY mechanics with professional-level diagnostics.
Read our expert Innova 6100P review.
Specifications:
- Display/size: Color/2.8 inches
- Bluetooth/handheld: Yes/Yes
- I/M Readiness test: Yes
- Displays live data: Yes
- Number of keys: 9
- Warranty: 1 year
- Size: 7.2 x 3.4 x 1.1 inches
- Weight: 6.5 ounces
Reasons to Buy:
- Compact and portable design
- Resets battery and oil life lights
- Versatile handheld and app-based diagnostics
- Provides repair instructions and parts information
Reasons to Avoid:
- Text-based interface can feel basic
- Buttons require firm presses
During testing, the Innova 6100P impressed us with its ability to make even automotive novices feel like seasoned professionals. Its user-friendliness and comprehensive features are truly remarkable.
The 6100P excels at simplifying complex diagnostic tasks, offering a smooth and efficient user experience right from the start. While the initial setup is slightly more involved than some other scanners, it’s far from difficult. The scanner connected instantly upon plugging into our test car’s OBD port.
A standout feature of the Innova 6100P is its hybrid design, allowing users to choose between the dedicated handheld scanner and Innova’s intuitive companion app. The app includes a particularly valuable predictive maintenance feature, forecasting potential component failures and enabling proactive repair planning.
This predictive capability alone almost justifies the $120 price. The inclusion of live data monitoring, fault code reading, pre-inspection I/M readiness checks, and a generous 72-inch cable further solidify the Innova 6100P’s position as a top rated OBD2 scanner and an exceptional value.
Read our in-depth Innova 6100P review.
Top Rated Mobile OBD2 Scanner
Topdon TopScan Bluetooth OBD2 Scanner (Image credit: Topdon)
2. Topdon TopScan
Unlocking your car’s hidden performance potential.
Read our expert Topdon TopScan review.
Specifications:
- Display/size: None
- Bluetooth/handheld: Yes/No
- I/M Readiness test: Yes
- Displays live data: Yes
- Number of keys: None
- Warranty: 2 year
- Size: 3.2 x 2.0 x 1.1 inches
- Weight: 2.6 ounces
Reasons to Buy:
- Comprehensive automotive diagnostic coverage
- Real-time live data streaming
- Unique performance metrics
- Maintenance item monitoring
Reasons to Avoid:
- Larger transmitter module
- Some features require subscription after the first year
While its unassuming appearance might suggest otherwise, the Topdon TopScan is a powerhouse of diagnostic capabilities packed into a compact scanner. This isn’t just a basic Bluetooth OBD-II module; it significantly surpasses the functionality of many competitors in its class.
Beyond standard fault code reading and I/M Readiness tests, the TopScan goes further, offering performance and efficiency evaluations. It can even estimate your vehicle’s horsepower and torque – features rarely found in even much pricier OBD-II scanners.
Whether you’re focused on optimizing your car’s performance or simply ensuring its roadworthiness, the Topdon TopScan is an invaluable tool to have in your garage. Its advanced features and mobile convenience make it a top rated OBD2 scanner for tech-savvy car owners.
Read our comprehensive Topdon TopScan review.
Top Rated Budget OBD2 Scanner
Launch CR529 OBD-II Scanner (Image credit: Future)
3. Launch CR529
Exceptional OBD-II diagnostics for under $50.
Read our expert Launch CR529 review.
Specifications:
- Display/size: Color/ 2.8-inches
- Bluetooth/handheld: No/Yes
- I/M Readiness test: Yes
- Displays live data: Yes
- Number of keys: 8
- Warranty: 1 year
- Size: 6.5 x 3.8 x 1.2 inches
- Weight: 11 ounces
Reasons to Buy:
- Extremely affordable
- Lifetime free updates
- Convenient pre-inspection report feature
Reasons to Avoid:
- Lacks manufacturer-specific diagnostic codes
- Feels somewhat heavy
- Limited 1-year warranty
The Launch CR529 redefines value in OBD-II scanners. Its incredibly low price of around $38 is astonishing, especially considering the range of diagnostic features it offers. We were genuinely surprised by the level of functionality packed into such an affordable device.
Naturally, some compromises are necessary at this price point. The CR529 doesn’t support manufacturer-specific codes, and it does feel a bit weighty in hand. However, it still provides live data, an instant inspection feature, and a surprisingly detailed look into your car’s internal systems. The inclusion of lifetime updates is a significant bonus, ensuring long-term usability without subscription fees.
While the CR529 might not satisfy users with professional automotive diagnostic needs, it’s an excellent choice for most car owners seeking a reliable and budget-friendly OBD-II scanner. It’s a top rated OBD2 scanner in its price range, offering incredible value for money.
Read our full Launch CR529 review.
Top Rated Pro-Level OBD2 Scanner
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Topdon Phoenix Lite 2 OBD2 Scanner in Workshop (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-1015613521157466159-20)
4. Topdon Phoenix Lite 2
Bridging the gap between amateur and professional vehicle diagnostics.
Read our expert Topdon Phoenix Lite 2 review.
Specifications:
- Display/size: Color/8-inch
- Bluetooth/handheld: Yes/Yes
- I/M Readiness test: Yes
- Displays live data: Yes
- Number of keys: Touchscreen
- Warranty: 2 years
- Size: 10.2 x 7.2 x 1.7 inches
- Weight: 2.6 pounds
Reasons to Buy:
- Near-professional grade OBD scanner
- Hybrid handheld with Wi-Fi and Bluetooth connectivity
- Large 8-inch touchscreen display
- Extensive suite of diagnostic tests and live data options
- Includes adapters and a protective hard case
Reasons to Avoid:
- Bulky and heavy design, can be cumbersome
- Higher price point
- Subscription required for updates after two years
The Topdon Phoenix Lite 2 commands a higher price than many OBD-II scanners, but it delivers a wealth of features and capabilities that justify the investment. This scanner seamlessly caters to both experienced mechanics and car enthusiasts seeking advanced diagnostic power.
A key advantage of the Phoenix Lite 2 is its completely wireless operation. The control pad connects via Bluetooth to a receiver plugged into the OBD port, offering unparalleled freedom of movement around the vehicle. While the scanner itself is substantial in size and weight, it features a built-in kickstand and rugged construction, making it well-suited for workshop environments.
The Phoenix Lite 2 offers advanced features like live data graphing, comprehensive fault code information, and many more advanced diagnostic functions typically absent in cheaper scanners. Keep in mind that firmware updates are included for two years, after which a $495 annual subscription is required. Despite the cost, its comprehensive features and robust design make it a top rated OBD2 scanner for serious users.
Read our detailed Topdon Phoenix 2 Lite review.
Top Rated Dual-Purpose OBD2 Scanner
Best OBD-II scanners: Ancel BD310
Ancel BD310 Dual-Purpose OBD-II Scanner (Image credit: Tom’s Guide)
5. Ancel BD310
A versatile OBD-II scanner that pulls double duty.
Read our expert Ancel BD310 review.
Specifications:
- Display/size: Color/2 inches
- Bluetooth/handheld: Yes/Yes
- I/M Readiness test: Yes
- Displays live data: Yes
- Number of keys: 4
- Warranty: 3 years
- Size: 5.1 x 2.4 x 0.6 inches
- Weight: 5.4 ounces
Reasons to Buy:
- Lightweight and compact for easy storage
- Functions as both a scanner and secondary car display
- Offers handheld and Bluetooth scanning options
Reasons to Avoid:
- Minimalist interface may lack depth for some users
- Small screen size
The Ancel BD310 stands out with its dual functionality. It operates as a conventional handheld OBD-II scanner and can also connect to a smartphone via Bluetooth to function as an auxiliary display, showing key engine parameters within the car’s cabin.
We found the BD310 exceptionally convenient due to its small size and light weight, making it easy to store in a glove compartment. The 2-inch display is compact, and the four-button interface is somewhat basic, but it remains intuitive enough for diagnosing vehicle issues.
The 56-inch cable offers ample reach when working under the hood. The BD310 performs essential functions like I/M readiness tests and displays performance data such as coolant temperature, engine timing, and RPM. Its dual-purpose nature and portability make the Ancel BD310 a top rated OBD2 scanner for everyday use.
Read our full Ancel BD310 review.
Top Rated OBD2 Scanner with Companion App
carly obd 2 scanner design
Carly OBD-II Scanner Design (Image credit: Carly)
6. Carly OBD-II Scanner
A capable scanner, with value depending on your vehicle make.
Read our expert Carly OBD scanner review.
Specifications:
- Display/Size: No
- Bluetooth/Handheld: Yes/No
- I/M Readiness Test: No
- Displays live data: Yes
- Number of keys: None
- Warranty: Lifetime
- Size: 2.9 x 1.5 x 0.7 inches
- Weight: 0.7 ounces
Reasons to Buy:
- User-friendly interface
- Extensive customization options
- Live data display
- Maintenance and repair features
- Lifetime warranty and updates
Reasons to Avoid:
- Feature availability varies by car model
- App subscription can be costly for full functionality
The Carly OBD Scanner offers a compelling set of features, and its companion app truly shines. While many Bluetooth scanners have basic apps, Carly provides one of the most feature-rich and user-friendly app experiences we’ve encountered.
The app goes beyond basic fault diagnosis and light resetting, offering repair assistance and even a used car check feature to help identify potential lemons. The lifetime warranty is a rare and highly appreciated perk.
However, the breadth of features available is car-dependent. VW, BMW, and Ford owners will unlock the most functionality. It’s crucial to verify your car’s compatibility before purchasing. Also, while the app is excellent, accessing advanced features beyond basic OBD functions requires an ongoing subscription, which can add to the overall cost. Despite these considerations, the Carly OBD-II Scanner, especially when paired with compatible vehicles, is a top rated OBD2 scanner due to its app experience.
Read our complete Carly OBD scanner review.
Other Top Rated OBD2 Scanners We Tested
Innova CarScan Mobile 1000 in use
Innova CarScan Mobile 1000 in Use (Image credit: Tom’s Guide)
8. Innova CarScan Mobile 1000
Innovative diagnostics in a compact Bluetooth design.
Read our expert Innova CarScan Mobile 1000 review.
Specifications:
- Display/size: None
- Bluetooth/handheld: Yes/No
- I/M Readiness test: Yes
- Displays live data: Yes
- Number of keys: None
- Warranty: 1 year
- Size: 2.0x 1.5 x 1.0 inches
- Weight: 0.9 ounces
Reasons to Buy:
- Simple and fast setup
- Exceptionally small and portable
- Excellent companion app functionality
- Predictive diagnostics and repair suggestions
- Can function as standalone automotive gauges
Reasons to Avoid:
- Relies on two separate apps
- Both apps contain advertisements
The Innova CarScan Mobile 1000 is a standout Bluetooth OBD-II scanner due to its innovation and ease of use. It’s incredibly simple to set up and packs many of the advanced features found in larger Innova scanners into a tiny module.
The CarScan Mobile 1000 offers a wide array of diagnostic features, including Innova’s predictive diagnostics to identify potential issues proactively. It also provides part and repair suggestions, giving you specific information for your mechanic. Additionally, it can transform your smartphone into a secondary instrument panel for real-time vehicle data.
Read the full Innova CarScan Mobile 1000 review
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Best OBD-II scanners: Bottom view of ThinkCar ThinkDiag TKD01
ThinkCar ThinkDiag TKD01 Bottom View (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-1741027306933673019-20)
9. ThinkCar ThinkDiag TKD01
Reliable performance, but with a subscription model.
Read our expert ThinkCar ThinkDiag TKD01 review.
Specifications:
- Display/size: None
- Bluetooth/handheld: Yes/No
- I/M Readiness test: Yes
- Displays live data: Yes
- Number of keys: None
- Warranty: 1 year
- Size: 3.1 x 2.0 x 1.1 inches
- Weight: 2.7 ounces
Reasons to Buy:
- Capable of reading enhanced diagnostic codes
- Wide range of optional functions available
- Includes a protective hard case
Reasons to Avoid:
- Requires a $40 app subscription after the first year
- Relatively heavy module
- Setup can be slightly complex
The ThinkCar ThinkDiag TKD01 is a larger Bluetooth OBD-II scanner, which can make installation in some vehicles a bit tight. Its robust, oval-shaped module is very durable.
ThinkDiag’s app boasts profiles for over 100 vehicle manufacturers, making it excellent for accessing manufacturer-specific fault codes. It also displays extended fault codes and handles tasks like resetting oil change lights and monitoring vehicle systems effectively. Like Innova scanners, it offers predictive diagnostics, though without repair advice.
Be aware that full access requires an annual subscription of at least $40 after the first year.
Read our detailed ThinkCar ThinkDiag TKD01 review.
Best OBD-II scanners: Autel AutoLink AL539
Autel AutoLink AL539 (Image credit: Tom’s Guide)
10. Autel AutoLink AL539
Ideal for diagnosing electrical system issues.
Read our expert Autel AutoLink AL539 review.
Specifications:
- Display/size: Color/2.8 inches
- Bluetooth/Handheld: Yes/No
- I/M Readiness test: Yes
- Displays live data: Yes
- Number of keys: 8
- Warranty: 1 year
- Size: 6.7 x 3.6 x 1.4 inches
- Weight: 10.6 ounces
Reasons to Buy:
- Integrated electrical multimeter
- Battery testing capabilities
- Includes a built-in stand
Reasons to Avoid:
- OBD-II and multimeter functions cannot be used simultaneously
- Battery requires charging
The Autel AutoLink AL539 uniquely integrates a multimeter for diagnosing electrical problems like faulty wiring, shorts, alternator voltage issues, and blown fuses. However, the multimeter can’t be used while the AL539 is in OBD-II scanner mode.
As an OBD-II scanner, the AL539 displays live data and performs comprehensive pre-inspection readiness tests. Faults are indicated with color-coded lights for clear understanding.
The AL539’s design is user-friendly, featuring a compact and lightweight body with a pull-out stand and a long 58-inch cable. The interface is intuitive, with icons for main functions. Its electrical diagnostic capabilities set the Autel AutoLink AL539 apart as a top rated OBD2 scanner for electrical troubleshooting.
Read our complete Autel AutoLink AL539 review.
Frequently Asked Questions About Top Rated OBD2 Scanners
What is an OBD-II Scanner?
Mechanics use diagnostic scanners plugged into your car’s OBD port to access data from the onboard computer and diagnose issues.
Basic OBD-II scanners read and identify error codes flagged by your car when a problem is detected. Advanced models monitor car systems in real-time and predict potential future issues.
What is the OBD-II Port?
The On-Board Diagnostics Version Two (OBD-II) port is standard on most passenger vehicles sold in the US since 1996, Canada since 1998, EU since 2004, and Australia, Mexico, and New Zealand since 2006.
This port allows connection to the car’s computer for devices like OBD-II scanners, insurance black boxes, and dash cams.
Find your car’s OBD-II port location for North American cars. For worldwide locations, see how to find your OBD-II/EOBD port.
What is a DTC?
DTC stands for Diagnostic Trouble Code. It’s an error code generated by a car’s OBD system when it detects a problem. OBD-II scanners read these codes to help users understand vehicle issues. Standardized DTC codes are consistent across vehicle makes and models, though some manufacturers use unique DTCs.
What do DTCs Actually Mean?
DTCs may seem like random characters, but they follow a logical structure indicating the type and location of the problem.
The first letter designates the affected system: Powertrain (P), Body (B), Chassis (C), or Network (N). The second character is a number: 0 for generic codes, 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
- 5: Vehicle speed and idle control
- 6: Computer auxiliary outputs
- 7, 8, 9: Transmission and gearbox faults
- A, B, C: Hybrid propulsion faults
The fourth and fifth characters pinpoint the exact fault, ranging from 0 to 99.
OBD-II scanners translate these codes into descriptions. Advanced scanners provide more detailed information. Online searches using Google can also help decipher DTCs. There are over 5,000 possible DTCs, not all indicating critical issues. Some may simply warn of minor problems like slightly high engine temperature.
How to Choose the Top Rated OBD2 Scanner for You
Using a top rated OBD2 scanner is the best way to understand your vehicle’s health and diagnose problems. It’s the same method dealerships and repair shops use. Why not access this information yourself?
OBD-II scanners come in two main types:
- Handheld OBD-II scanners: Feature an integrated screen and cable.
- Wireless OBD2 scanners: Connect via Bluetooth to smartphones or tablets.
High-quality OBD-II scanners are available for under $200, with some costing less than $30. Key factors in choosing a top rated OBD2 scanner include:
- Easy Setup: Quick and straightforward setup is crucial for timely diagnostics.
- Faults and Explanations: Scanners should not only display fault codes but also explain their meaning for DIY repairs or mechanic communication.
- I/M Readiness Check: Ensures your vehicle passes state emissions inspections.
- Accuracy: Reliable and accurate results are essential for proper diagnosis.
- Size and Weight: Compact and lightweight scanners are more convenient for storage and on-the-go use.
- Live Data: Real-time data monitoring helps identify intermittent issues.
- Graphs: Visual data representation is beneficial for analysis and comparison.
- Warranty: Look for scanners with long warranties, ideally lifetime warranties and software updates to ensure longevity.
Consider whether you prefer a wireless scanner for phone/tablet use or a handheld unit. Prioritize lifetime warranties or software updates for future compatibility. For handheld scanners, choose a large, bright, icon-based display. Rugged scanners are recommended for durability in demanding environments.
Extra features like multimeters, manufacturer-specific code reading, and PDF export capabilities can be beneficial.
Top rated OBD2 scanners offer professional-level diagnostics for under $100, a cost-effective alternative to expensive mechanic labor.
How We Test Top Rated OBD2 Scanners
To test OBD2 scanners for top ratings, we used a 2014 Audi A4 Allroad over several weeks in various driving conditions. Each scanner was connected to the car’s OBD-II port to verify VIN reporting.
Wireless scanners were paired with an Apple iPad Pro, Microsoft Surface, or Samsung Galaxy S9+ via Bluetooth or Wi-Fi. Handheld scanners were powered directly through the OBD-II port.
Cord length (handheld) and wireless range were measured. Engine and vital systems were monitored with the car running. The oil temperature sensor was intentionally disconnected to trigger a fault code.
Scanner details were recorded, the sensor issue was fixed, the check engine light was reset, and the error code was cleared.
Road tests assessed live data display (engine speed, timing, coolant temperature), noting data presentation as numbers, graphs, or gauges.
Scanner fault code interpretation was evaluated. All fault codes consist of four numbers and a letter prefix (P, B, C, or U). Generic codes (starting with 0) apply to all cars, while manufacturer-specific codes (starting with 1) are unique to carmakers.
For example, P0098 indicates an intake air temperature sensor issue, while Ford’s P1112 (specialty code) signals intermittent intake air temperature sensor values requiring replacement.
