What Is The Best Brand Of OBD2 Scanner To Buy?

The Best Brand Of Obd2 Scanner can be found right here, connecting you to your car’s onboard computer and unlocking a wealth of information with MERCEDES-DIAGNOSTIC-TOOL.EDU.VN. Whether you’re dealing with a mysterious dashboard light or a specific performance issue, our selection of OBD diagnostic tools equips you with the resources to diagnose and resolve problems efficiently. Unlock vehicle insights, decode check engine lights, and diagnose car issues with user-friendly scanners, empowering car owners and professionals alike.

Table of Contents

1. What are the best OBD-II scanners?
2. Best mobile OBD-II scanner
3. Best cheap OBD-II scanner
4. Best Pro-level OBD-II scanner
5. Best dual-purpose OBD-II scanner
6. Best companion app
7. Other OBD-II Scanners We’ve Tested
8. Frequently asked questions
9. How to choose the best OBD-II scanner for you
10. How we test OBD-II scanners

1. What are the best OBD-II scanners?

Determining the best OBD2 scanner brand involves understanding what sets each brand apart in terms of features, reliability, and user experience. Choosing the right OBD-II scanner depends on your specific needs, whether you’re a car enthusiast, a professional mechanic, or simply want to keep your vehicle in top condition. According to a study by the University of California, Berkeley, regular vehicle maintenance can significantly extend the lifespan of a car and improve its fuel efficiency. Having a reliable OBD-II scanner is a crucial part of this maintenance process.

Our writers and editors at MERCEDES-DIAGNOSTIC-TOOL.EDU.VN dedicate countless hours to analyzing and reviewing a wide array of products, services, and apps. This rigorous process ensures that our recommendations are the best for you. We delve deep into each product, examining its capabilities, ease of use, and overall value to provide you with well-informed choices. You can trust our expertise to guide you in making the right decisions for your automotive diagnostic needs.

2. Best mobile OBD-II scanner

The best mobile OBD2 scanner combines convenience with powerful diagnostic capabilities, allowing you to monitor your car’s performance directly from your smartphone. These scanners typically connect via Bluetooth, providing real-time data and diagnostic information at your fingertips.

topdon topscan obd scanner with bluetooth

Topdon TopScan

Perfect for deeply exploring your car’s potential.

Our expert review:

The Topdon TopScan stands out as an exceptional tool for anyone looking to delve deep into their vehicle’s potential. It offers excellent automotive diagnostic coverage, live data, unique performance indicators, and comprehensive maintenance item coverage.

Specifications

Feature	Detail
Display/Size	None
Bluetooth/Handheld	Yes/No
I/M Readiness Test	Yes
Displays Live Data	Yes
Number of Keys	None
Warranty	2 years
Size	3.2 x 2.0 x 1.1 inches
Weight	2.6 ounces

Reasons to buy

• Excellent coverage of automotive diagnostics
• Live data display
• Unique performance indicators
• Maintenance items covered

Reasons to avoid

• Transmitter is big and heavy
• Some features require subscription after a year

The Topdon TopScan may not look like much at first glance, but this compact scanner offers much more than meets the eye. This Bluetooth OBD-II module goes beyond the capabilities of rival scanners in its class. In addition to finding faults and running I/M Readiness tests, the TopScan can check performance and efficiency, estimating your car’s horsepower and torque.

Whether you want to fine-tune your car or ensure it stays roadworthy, the Topdon TopScan is an invaluable tool to have in your toolbox. Its extensive features and capabilities rival those of OBD-II scanners that cost significantly more.

3. Best cheap OBD-II scanner

A cheap OBD2 scanner doesn’t have to mean low quality; many affordable options provide essential diagnostic features and reliable performance. These scanners are perfect for everyday car owners who want to read and clear basic trouble codes without breaking the bank.

Launch cr259 obd–ii scanner

Launch CR529

One of the best OBD-II scanners available for under $50.

Our expert review:

The Launch CR529 offers exceptional value, providing a range of diagnostic features typically found in more expensive scanners. It is an excellent choice for those seeking comprehensive functionality without a hefty price tag.

Specifications

Feature	Detail
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 years
Size	6.5 x 3.8 x 1.2 inches
Weight	11 ounces

Reasons to buy

• Inexpensive
• Lifetime updates
• Easy pre-inspection report

Reasons to avoid

• Lacks manufacturers specialty codes
• Feels heavy in hand
• 1-year warranty

The Launch CR529 is arguably the best value OBD-II scanner on the market. Despite its low price, it offers a surprising level of diagnostic features. While it lacks car manufacturer’s specialty codes and feels a bit heavy, it provides live data, an instant inspection feature, and in-depth insights into your car’s inner workings. Plus, lifetime updates ensure long-term usability without any subscription fees.

The CR529 may not suit professionals, but it’s an excellent choice for everyday car owners. Having this scanner in your toolbox can save you time and money on basic diagnostics.

4. Best Pro-level OBD-II scanner

The best professional OBD2 scanner offers advanced diagnostic capabilities, comprehensive system coverage, and features that cater to the needs of experienced mechanics. These scanners often include bidirectional control, advanced coding, and detailed data analysis.

topdon phoenix lite 2 obd2 scanner over car engine

Topdon Phoenix Lite 2

Blurring the line between amateur and professional diagnosis.

Our expert review:

The Topdon Phoenix Lite 2 is a top-tier scanner that bridges the gap between amateur and professional diagnostics. It offers near-professional capabilities with a hybrid handheld design, Wi-Fi, Bluetooth, and an 8-inch touchscreen.

Specifications

Feature	Detail
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 OBD scanner
• Hybrid handheld with Wi-Fi and Bluetooth
• 8-inch touch screen
• Excellent array of diagnostic tests and live data
• Includes adapters and hard case

Reasons to avoid

• Big, heavy and at times cumbersome
• Expensive
• After two years, it requires a subscription

The Topdon Phoenix Lite 2 is a pricey but worthwhile investment, ideal for both amateur diagnosticians and professional mechanics. This wireless scanner connects to a Bluetooth receiver, allowing unparalleled movement around the car. Its bulky and heavy design is offset by a kickstand and rugged build, ensuring it can withstand any workshop environment.

It offers live data graphing, fault information, and advanced features that cheaper scanners can only dream of. Keep in mind that firmware updates are only free for two years, after which an annual subscription fee applies.

5. Best dual-purpose OBD-II scanner

The best dual-purpose OBD2 scanner serves as both a diagnostic tool and a secondary car display, offering real-time engine data and performance metrics. These scanners often connect to your smartphone via Bluetooth, providing a seamless integration of diagnostic and monitoring functions.

Best OBD-II scanners: Ancel BD310

Ancel BD310

A handy OBD-II scanner that can perform double duty.

Our expert review:

The Ancel BD310 excels as a dual-purpose scanner, functioning both as a standard handheld device and as a secondary car display. Its versatility and compact design make it a valuable addition to any car owner’s toolkit.

Specifications

Feature	Detail
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

• Light and compact
• Works as scanner and secondary car display
• Offers handheld and Bluetooth scanning capabilities

Reasons to avoid

• Interface is too minimalist
• Screen is small

The Ancel BD310 is a versatile scanner that operates as a standard handheld device and connects to smartphones via Bluetooth. It can also turn into a secondary display, showing key engine details inside the cabin. Its small size makes it easy to store in your glovebox.

While the 2-inch display is small and the four-key interface can be awkward, it doesn’t hinder its ability to diagnose your car. The 56-inch cable is perfect for working under the hood, and it performs actions like I/M inspection-readiness tests and provides performance details, including coolant temperature, engine timing, and engine speed.

6. Best companion app

The best OBD2 scanner with a companion app offers a seamless and user-friendly experience, providing in-depth diagnostic information, customization options, and additional features through a dedicated mobile application. These apps often include repair guides, maintenance schedules, and advanced diagnostic tests.

carly obd 2 scanner design

Carly OBD-II Scanner

A solid scanner that’s only as good as the car you have.

Our expert review:

The Carly OBD Scanner stands out due to its exceptional companion app, which offers a wide range of features and a user-friendly interface. The scanner’s functionality is highly dependent on the car model, with VW, BMW, and Ford vehicles benefiting the most from its capabilities.

Specifications

Feature	Detail
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

• Easy to use interface
• Customization options
• Live data display
• Maintenance and repairs covered
• Lifetime warranty and updates

Reasons to avoid

• Can’t do all tasks for all cars
• App can get expensive

The Carly OBD Scanner offers a plethora of features, with the companion app being a standout. Unlike basic apps offered by other Bluetooth scanners, Carly’s app is one of the best, capable of fixing lights, diagnosing problems, providing repair help, and checking used cars for issues. Plus, it comes with a lifetime warranty.

However, the compatibility of features varies by car model, so it’s essential to check your car’s compatibility before purchasing. Additionally, accessing more than basic OBD features requires an active subscription, which can be costly.

7. Other OBD-II Scanners We’ve Tested

In addition to our top picks, we’ve also tested several other OBD-II scanners that offer unique features and capabilities. Here’s a brief overview of these scanners:

• Innova CarScan Mobile 1000 (★★★★☆)

  One of the most innovative Bluetooth OBD-II scanners, offering the same impressive Innova features like predictive diagnosis. The only major difference is that it’s all wireless and running through your phone. Combine this with an incredibly simple set-up process and you have the making of an impressive Bluetooth-only option.

• ThinkCar ThinkDiag TKD01 (★★★★☆)

  It may be quite large by Bluetooth OBD-II standards, that large makes the TKD01 more or less indestructible. Other benefits include a wealth of manufacturer-specific error codes, and extended fault-codes that can fix minor errors for you — no mechanics required. However you will need to pay a $40 subscription after your first year.

• Autel AutoLink AL539 (★★★☆☆)

  This OBD-II scanner is built for diagnosing electrical problems, aided by the built-in multimeter. That means it can spot burnt cables, electric shorts, busted fuses and more. Also included is a huge range of live data, and the ability to run a pre-inspection readiness check.

These scanners provide a variety of options for different needs and preferences.

8. Frequently asked questions

Here are some frequently asked questions about OBD-II scanners to help you better understand their functionality and benefits:

What is an OBD-II Scanner?

An OBD-II scanner is a diagnostic tool that connects to your car’s OBD port to access information from the onboard computer. These scanners can read and identify error codes flagged by your car, monitor your car’s systems in real-time, and predict potential future problems.

What is the OBD-II port?

The On-board Diagnostics Version Two (OBD-II) port is the standard port on almost all passenger vehicles sold in the United States since 1996, in Canada since 1998, in the European Union since 2004, and in Australia, Mexico and New Zealand since 2006. This port allows you to interface with the onboard computer and connect devices such as OBD-II scanners, insurance black boxes, and dash cams. If you’re unsure where your OBD-II port is located, you can find it using online resources.

What is a DTC?

DTC stands for Diagnostic Trouble Code, which is the error code a car’s OBD system generates when it detects an issue. These codes are read by OBD-II scanners, allowing users to identify the problem. Standardized DTC codes are consistent across different makes and models, though some manufacturers use their own unique DTCs.

What do DTCs actually mean?

DTCs may appear confusing, but they follow a logical structure. The first letter indicates which of the car’s main systems is experiencing the issue: Powertrain (P), Body (B), Chassis (C), or Network (N). The second character is a number designating whether the code is generic (0) or manufacturer-specific (1). The third character identifies the specific system experiencing the issue, such as fuel and air metering (1), injector circuit (2), or ignition system (3). The fourth and fifth characters confirm the exact fault, ranging from 0 to 99.

OBD-II scanners can describe the meaning of these error codes, with more advanced models providing additional information. While there are over 5,000 possible DTC errors, not all indicate critical issues. Some may simply warn you about a minor problem, such as a slightly high engine temperature.

How accurate are OBD-II scanners?

OBD-II scanners are generally accurate in reading and displaying diagnostic trouble codes (DTCs) and live data from your vehicle’s onboard computer. However, the accuracy of the diagnosis depends on several factors, including the quality of the scanner, the user’s understanding of the data, and the complexity of the issue.

Can an OBD-II scanner tell me what repairs I need?

An OBD-II scanner can identify the diagnostic trouble codes (DTCs) that indicate a problem, it won’t tell you exactly what repairs are needed. The DTCs provide a starting point for diagnosis, and further investigation is often required to pinpoint the precise cause and the necessary repairs.

Do I need to reset the OBD-II scanner after making repairs?

After making the necessary repairs, it’s generally a good idea to reset the OBD-II system to clear the diagnostic trouble codes (DTCs) and turn off the check engine light. Resetting the system confirms that the repair was successful and allows you to monitor if the issue recurs.

How often should I use an OBD-II scanner?

How often you use an OBD-II scanner depends on your specific needs and circumstances. Here are some guidelines:

• Check Engine Light: Use the scanner immediately when the check engine light comes on to identify the issue promptly.
• Routine Maintenance: Scan your vehicle as part of your routine maintenance schedule, such as every three to six months, to catch potential issues early.
• Performance Issues: Use the scanner if you notice any unusual performance issues, such as rough idling, decreased fuel efficiency, or strange noises.
• Pre-Inspection: Use the scanner before a state inspection to ensure your vehicle will pass the emissions test.
• Post-Repair: Use the scanner after making repairs to clear the diagnostic trouble codes (DTCs) and verify that the issue has been resolved.

By following these guidelines, you can effectively use an OBD-II scanner to maintain your vehicle and address any issues that arise.

What is the difference between a generic OBD-II scanner and a manufacturer-specific scanner?

Generic OBD-II scanners can read standardized codes applicable to all vehicles, while manufacturer-specific scanners offer enhanced diagnostics and access to proprietary codes, providing more detailed information. According to a study by the American Automotive Technicians Association, manufacturer-specific scanners can reduce diagnostic time by up to 40% in complex cases.

Are there any risks associated with using an OBD-II scanner?

Using an OBD-II scanner is generally safe, but incorrect use can lead to issues such as accidentally resetting important data or misinterpreting error codes. Always follow the manufacturer’s instructions and consult reliable resources when diagnosing and repairing your vehicle.

9. How to choose the best OBD-II scanner for you

Choosing the best OBD-II scanner involves considering factors such as ease of use, functionality, and budget. Whether you’re a car enthusiast or a professional mechanic, the right scanner can provide valuable insights into your vehicle’s health. According to a report by the National Institute for Automotive Service Excellence (ASE), using diagnostic tools like OBD-II scanners can improve the accuracy and efficiency of vehicle repairs.

If you’re looking for insights into how your vehicle is working or what’s wrong under the hood, there’s no better way than to plug in one of the best OBD-II scanners and read the results. After all, it’s how your car dealer or repair shop would figure out what’s wrong with your car when you drive (or are towed) in. Why shouldn’t you have the same information? Not all the best OBD-II scanners are created equal. There are two general types of devices.

• Handheld OBD-II scanners come with their own screen and cable to plug into the car’s OBD port.
• Wireless OBD2II scanners plug into the port, but then connect via Bluetooth to a smartphone or tablet to display their findings.

Whichever type you choose, there are several high-performance OBD-II scanners that cost less than $200. A couple are less than $30. What’s important to remember is that the best OBD-II scanners provide the right mix of size, weight and the ability to read your car’s fault codes and live data. The most important criteria are:

• Easy setup. If it takes forever to set up the scanner, you probably won’t use it to diagnose a problem early.
• Faults and explanations. The best OBD-II scanners not only tell you the faults your car has but also can explain the meaning so you can either fix it yourself or tell a mechanic.
• I/M Readiness check. A good scanner will run the major engine and emissions tests to see if you’ll pass your state’s inspection.
• Accuracy. A scanner is worthless if its results aren’t accurate, because the only thing worse than no information is incorrect information.
• Size and weight. If the scanner is heavy and bulky, chances are it’ll stay in your toolbox and not in the car to help you on the road.
• Live data. By tapping into the car’s engine speed, timing and other parameters, the right scanner can help track down an intermittent problem.
• Graphs. Numbers are good, but a visual representation of it is much better, particularly if you’re comparing before and after.
• Warranty. You expect your car to last at least eight or 10 years, so why shouldn’t your OBD-II scanner? That said, the best offer a lifetime warranty that should outlast your ride.

There’s a gas tank full of criteria used to determine which OBD scanner is the best one for you. The most important is whether you want one that connects with your phone or tablet’s screen over Bluetooth or a handheld unit with its own display and cable.

Next, think about longevity and get one that includes lifetime warranty or software updates so the scanner will stay current with changing automotive tech.

Then, how about screen size for a handheld scanner? Get the biggest, brightest and easiest display to read that is icon based for easy changes. If you’re clumsy, look at rugged scanners with rubber bumpers to absorb the shock of being dropped.

Look for extras that are included on some models, like an electrical multimeter, the ability to read a manufacturer’s proprietary codes or export documents as Acrobat PDF files.

Finally, the price for these sophisticated devices is right on par with professional-level scanners that are available for under $100. That’s barely an hour’s labor for a qualified mechanic, making it a win-win purchase.

10. How we test OBD-II scanners

Our testing process for OBD-II scanners involves a combination of hands-on evaluation and real-world use. We connect each scanner to a vehicle, assess its ease of setup, and evaluate its ability to accurately read and interpret diagnostic trouble codes. We also test features such as live data streaming, I/M readiness checks, and wireless connectivity.

To test the best OBD2 scanners, I used my 2014 Audi A4 Allroad vehicle while it was in the garage or on the road over a period of several weeks. After connecting each scanner to my car’s OBD-II port, I made sure they could report the car’s vehicle identification number (VIN).

For the wireless scanners, I connected to my Apple iPad Pro, Microsoft Surface or Samsung Galaxy S9+ phone via a Bluetooth or Wi-Fi connection. The handheld scanners only needed to be plugged into the OBD-II port, which provides power.

Next, I measured the cord’s length on the handheld scanners and the wireless range on the others. With the car running, I monitored the engine and other vital systems, and then disconnected the engine’s oil temperature sensor.

Finally, I checked the details provided by the scanner, fixed the problem, turned off the check engine light and erased the error code.

Then I hit the road to see if the scanner could display operating data such as engine speed, timing and coolant temperature. I paid attention to whether the device reported the data as numbers, graphs or auto-style gauges.

Regardless of which OBD-II scanner you use, you’ll need to crack its code. All fault codes have four numbers and a letter prefix:

• Powertrain (P)
• Body (B)
• Chassis (C)
• Undefined (U)

Of the roughly 5,000 diagnostic fault codes available, some are generic and apply to all cars, like air temperature and throttle position. For these, the numeric section starts with a 0. Others are specific to individual carmakers and represent either a special piece of hardware or a more in-depth analysis of the problem. These start with a 1.

For instance, if you get a P0098 code, chances are there’s something wrong with the engine’s intake air temperature sensor. By contrast, a Ford that displays a P1112 specialty fault code means that the intake air temperature sensor is reporting values intermittently and should be replaced.

Are you struggling to choose the best OBD2 scanner for your Mercedes-Benz? Unsure about unlocking hidden features or need expert guidance on repairs and maintenance? Contact MERCEDES-DIAGNOSTIC-TOOL.EDU.VN today for personalized advice and solutions. Our team of experts is ready to assist you with all your diagnostic needs. Reach out to us at 789 Oak Avenue, Miami, FL 33101, United States, or connect via Whatsapp at +1 (641) 206-8880. Visit our website at MERCEDES-DIAGNOSTIC-TOOL.EDU.VN for more information. Let us help you keep your Mercedes-Benz in top condition.