Is your car acting up? A sputtering engine, strange noises, or that dreaded check engine light can leave you feeling stranded and confused. Fortunately, understanding your vehicle’s health is easier than ever with an OBD2 scanner. These essential automotive tools act as a bridge to your car’s computer, translating its language and providing insights into potential problems. An OBD2 scanner, also known as a code reader, can clear trouble codes, turn off check engine lights, and give you a wealth of information about your car’s condition.
While OBD2 scanners offer a generally universal service, there’s a wide range of designs and capabilities available. Different scanners cater to various car makes and models, and some offer more advanced features like providing potential fixes and detailed vehicle data. From professional-grade options like the Bosch 1300 OBD, which handles both OBD1 and OBD2 codes, to user-friendly, compact scanners like the OBDLINK MX+ focused on detailed OBD2 diagnostics, the choices can be overwhelming.
To help you navigate this landscape and find the best OBD2 scanner for your needs in 2024, we’ve put together a comprehensive guide. Explore our Buyer’s Guide to understand the key features to consider, or jump directly to our Price & Value breakdown to find options that fit your budget. If you’re still comparing models, our Comparison Chart offers a quick side-by-side look. Otherwise, keep scrolling to discover our top recommendations for the best OBD2 scanners of 2024.
Editor’s Note: Our guide to the best OBD2 scanners was recently updated on November 1, 2024, to include the Topdon TopScan OBD2 Bluetooth Scanner as a top contender.
Top OBD2 Scanners in 2024
Best Overall OBD2 Scanner
OBDLINK MX+
- Connection: Bluetooth (via app)
- Data Log: Trip and vehicle stats for every drive
- Solution Identification: Yes
- Live Data: Yes, viewable on a 6-gauge digital display via app
- Display: Phone or tablet
- Vehicle Compatibility: All 1996 and newer cars in U.S. and international markets
Pros
- Advanced data access for Ford and General Motors vehicles, including features like cooled/heated seats.
- Battery drain and overvoltage protection for continuous use.
- Broad compatibility with iOS, Android, Windows, and various third-party apps.
Cons
- Limited compatibility with newer vehicles from 2022 onwards.
Eric Phillips
The OBDLINK MX+ ($140) stands out as a premium OBD2 scanner, delivering the most comprehensive vehicle data available through your OBD2 port. Its compact, user-friendly design allows for a “plug-and-forget” experience. You can confidently leave it connected 24/7 thanks to its built-in battery drain and overvoltage protection. Furthermore, the MX+ incorporates a unique security mechanism, claiming to be hacker-proof and preventing unauthorized access to your vehicle’s system.
In our testing, the OBDLINK MX+ consistently provided the most in-depth information about our test vehicles. Diagnostic codes were displayed clearly and were easy to understand and clear. The device also generated exceptionally detailed trip reports and logs, capturing hundreds of parameters, including fuel consumption, providing a more comprehensive set of metrics than any other scanner we evaluated. For a wide range of late-model vehicles from General Motors, Ford, Mazda, Nissan, and Toyota, including our own test vehicles, the MX+ successfully accessed and cleared codes from advanced automotive networks such as airbags, anti-lock braking systems (ABS), and tire-pressure monitoring systems (TPMS).
A significant advantage of the MX+ is its extensive compatibility with third-party apps. This scanner works seamlessly with hundreds of apps designed to enhance vehicle performance, modify settings, remotely start engines on compatible vehicles, and even perform diagnostics on electric vehicles. Beyond detailed logs and graphs, the MX+ offers a heads-up display mode with 13 customizable preset parameters, presented as straightforward gauges on your smartphone or tablet screen. This feature expands the real-time data you can monitor while driving.
For those interested in performance metrics, the MX+ includes a performance mode that tracks variables such as 0-60 mph time, quarter-mile time, half-mile time, and more. While compatibility with vehicles from 2022 and newer is currently limited, OBDLINK is actively adding new vehicle support through free software updates.
In conclusion, while the OBDLINK MX+ is the most expensive Bluetooth scanner we tested, its ability to deliver unparalleled vehicle information, its user-friendly interface for continuous use, and its exceptional design for live data monitoring make it the top choice. For anyone seeking to maximize the potential of their OBD2 scanner, the MX+ is the clear winner in 2024.
Best Budget OBD2 Scanner
Motopower MP69033
- Connection: Wired
- Data Log: No
- Solution Identification: No
- Live Data: Limited
- Display: 2.8″ non-color screen
- Vehicle Compatibility: Most U.S., E.U., and Canada models
Pros
- Extremely affordable price point.
- Large, user-friendly buttons for easy operation.
Cons
- Lacks advanced features.
- Basic code reading capabilities.
- Screen clarity could be improved.
Eric Phillips
If you’re looking for a reliable, no-frills OBD2 scanner that won’t break the bank, the Motopower MP69033 ($24) is an excellent budget-friendly choice for 2024. This wired scanner is designed for simplicity, quickly connecting to your vehicle to read and clear basic trouble codes. It features large, easily accessible buttons and a straightforward menu, making it simple to use for anyone.
This plug-and-play OBD2 scanner is compact and features a 2.8-inch black and white LCD screen. Its 2.5-foot wired cord provides ample length to connect under the dashboard and comfortably operate the scanner from the driver’s seat. It’s powered directly by your vehicle when plugged in, eliminating the need for batteries or charging.
The Motopower MP69033 supports six languages and is compatible with most modern vehicles sold in the US, Europe, and Canada. While it offers limited live data functionality, displaying only one parameter at a time on a screen that can be somewhat difficult to read, it provides the essential code reading and clearing functions effectively. It doesn’t include advanced features like enhanced diagnostics or comprehensive data logging found in higher-end scanners.
However, for many drivers, advanced technology isn’t always necessary. If you need a basic, dependable scanner for reading and clearing codes without extra frills, the Motopower MP69033 is the ideal solution. It’s a straightforward tool that gets the job done at an unbeatable price, making it the best budget OBD2 scanner in 2024.
Easiest-to-Use OBD2 Scanner
Bluedriver Pro
- Connection: Bluetooth
- Data Log: Freeze frame data
- Solution Identification: Yes, multiple potential fixes
- Live Data: Yes
- Display: Phone or tablet
- Vehicle Compatibility: Most U.S., E.U., and Canada models
Pros
- Exceptionally user-friendly mobile app interface.
- Comprehensive diagnostic reports with detailed code information.
- Reads codes for airbag, TPMS, and ABS systems.
Cons
- Live data monitoring can be cumbersome while driving and potentially confusing.
- Accessing the user manual requires cellular data or Wi-Fi.
- Not compatible with third-party apps.
Eric Phillips
For those new to OBD2 scanners or who prioritize ease of use above all else, the Bluedriver Pro ($100) is the top pick for 2024. This Bluetooth-powered OBD2 scanner offers a streamlined and intuitive experience with its exceptionally user-friendly app. The Bluedriver Pro provides step-by-step instructions, guiding you through the process of reading, understanding, and clearing check engine lights effortlessly.
When reading codes with the Bluedriver app, it generates a complete repair report for each detected code. These reports include the Vehicle Identification Number (VIN), the specific code and its frequency of occurrence, a list of potential solutions with links to relevant parts, and even a feature to record your own repair notes within the app. You can easily share, save, or send these reports as PDF files. Notably, the Bluedriver Pro also reads codes beyond basic engine issues, including ABS, airbag, and TPMS codes.
The Bluedriver app includes both helpful instructional prompts and a comprehensive user manual. However, the user manual is presented as a series of YouTube videos, requiring a cellular or Wi-Fi connection to access. While the live data functionality is available, it is less intuitive to monitor compared to the gauge-style displays of scanners like the OBDLINK MX+, and the data refresh rate is slower. Furthermore, the Bluedriver Pro is not compatible with third-party apps that require a direct OBD2 connection.
Despite these minor drawbacks, the Bluedriver Pro excels in user-friendliness and Bluetooth app integration. Even users with no prior experience with OBD2 scanners will find it easy to interpret and clear codes, discover potential solutions, and even order necessary parts. Its ease of use makes it the best OBD2 scanner for beginners in 2024.
Best Combo OBD1 and OBD2 Scanner
Bosch 1300 OBD
- Connection: Wired
- Data Log: Yes
- Solution Identification: Yes, with 26 million fixes in its database
- Live Data: Yes
- Display: 3.5” color display
- Vehicle Compatibility: All U.S. OBD1 and OBD2 vehicles
Pros
- Unique OBD1 and OBD2 compatibility for older and newer vehicles.
- Reads ABS and SRS/airbag codes for comprehensive diagnostics.
- Battery-powered operation for use even when the vehicle battery is dead.
- Extensive database of 26 million experience-based fixes, accessible offline.
Cons
- Highest price point among tested scanners.
- Multiple cables can be bulky and take up storage space.
- Lacks fuel mileage data.
Eric Phillips
Bosch is a renowned name in automotive diagnostics, trusted by both professionals and DIY enthusiasts. The Bosch 1300 OBD (approximately $300) is a powerhouse diagnostic tool and the best OBD2 scanner for users needing both OBD1 and OBD2 compatibility in 2024. This scanner stands out as the only one on our list offering OBD1 compatibility alongside enhanced OBD2 capabilities.
The Bosch 1300 OBD features a wired design and comes with six different connector cables, ensuring compatibility with a wide range of vehicles. This includes cables for older 1984-1995 GM and Ford vehicles, 1989-1995 Chrysler and Toyota vehicles, as well as all OBD2-compliant vehicles. This extensive cable set provides exceptional versatility.
An added advantage is its ability to be powered by a 9-volt battery or a car outlet. While it can draw power from the vehicle’s OBD port, its battery power allows diagnostics even on vehicles with a dead battery. The Bosch 1300 OBD can detect and read ABS and airbag codes in addition to standard OBD2 codes.
Beyond OBD1 compatibility, the Bosch 1300 OBD boasts a comprehensive “Code Connect” database with over 26 million verified fixes for check engine light codes. This extensive database is stored directly on the device and is accessible without needing a cell or Wi-Fi connection, offering reliable diagnostic assistance anywhere.
While the Bosch 1300 OBD is a powerful and feature-rich automotive diagnostic tool, it does lack the ability to read fuel data, a feature that seems expected at its premium price point. The device itself is also physically larger, and the included cables add to its bulk, making storage less convenient. However, if you require a top-tier code reader that works seamlessly with both OBD1 and OBD2 vehicles, the Bosch 1300 OBD is undeniably the best choice for 2024.
Best Bluetooth and Wired OBD2 Scanner
Ancel BD31
- Connection: Wired and Bluetooth
- Data Log: Freeze frame data
- Solution Identification: Yes
- Live Data: Yes
- Display: Phone, tablet, and handheld 1.5 x 2” screen
- Vehicle Compatibility: All OBD2 vehicles plus E.U. and Canada models
Pros
- Provides multiple potential fixes for each check engine code.
- Seamlessly switches between Bluetooth and wired handheld connections.
- Handheld unit can serve as an additional heads-up display (HUD) with included mounts.
Cons
- Small handheld screen can be difficult to read.
- Wired connection displays less information compared to the Bluetooth app.
- Does not clear ABS or airbag codes.
Eric Phillips
The Ancel BD31 ($88) is a uniquely versatile OBD2 scanner, offering both wired and Bluetooth connectivity, making it the best option for users who want both in 2024. It effectively functions in three modes: wired, Bluetooth, and heads-up display (HUD).
When used as a Bluetooth scanner, the Ancel BD31’s app interface isn’t the most intuitive. However, it successfully reads codes via the smartphone app once connected. The BD31 truly excels in engine code diagnostics.
For our P0113 test code, the Ancel BD31 generated a report with six potential fixes, the highest number compared to other scanners we tested. Additionally, when connected to cellular service or Wi-Fi, the app provides a quick link to Google for searching the code in relation to your specific vehicle, aiding in more precise diagnosis.
The smartphone app enables live data monitoring, displaying three customizable gauges that can be used as a HUD while driving. In wired mode, the Ancel BD31 utilizes a small built-in screen and four buttons, allowing for basic code reading without a phone or tablet. The third mode transforms the handheld screen into a secondary HUD, displaying user-selected parameters like boost or air-fuel ratio, with included magnet and vent mounts for convenient placement.
While the three-in-one functionality is a major strength, the built-in screen is small and can be difficult to read. The wired connection also provides less data compared to the Bluetooth app. Furthermore, the Ancel BD31 does not support clearing ABS or airbag codes. However, if you value versatility, multiple connectivity options, and comprehensive diagnostic data, the Ancel BD31 is a solid and unique choice as the best Bluetooth and wired OBD2 scanner in 2024.
Topdon TopScan OBD2 Bluetooth Scanner
- Connection: Wireless Bluetooth
- Data Log: Freeze Frame
- Solution Identification: Yes
- Live Data: Yes
- Display: Phone, tablet
- Vehicle Compatibility: 98% of vehicles from 1996-2023
Pros
- Compact and highly portable.
- Wireless Bluetooth connectivity.
- Provides live data for real-time vehicle monitoring.
- Reads ABS and Air Bag codes for broader diagnostics.
Cons
- Vehicle compatibility limited to models up to 2023 (though updates are regularly released).
Eric Phillips
The Topdon TopScan OBD2 Bluetooth Scanner ($89) offers a compelling combination of features and affordability, making it a strong contender for the best OBD2 scanner in 2024. This compact, wireless Bluetooth unit packs a significant punch in a small package, covering 98% of vehicles manufactured between 1996 and 2023.
Setting up the Topdon TopScan is incredibly straightforward. Downloading the app and pairing it with the device is a painless process. The app itself is user-friendly and easy to navigate. It automatically recognizes your specific vehicle based on the VIN, which can be scanned using the device or entered manually.
We tested the Topdon TopScan on a 2008 Ford F250 XLT 4×4 with a 6.4L Powerstroke diesel engine, which had an active TPMS sensor fault. While it didn’t detect the active TPMS issue, it did identify and display past codes from previously resolved problems that had not been cleared. Clearing these codes was quick and easy. While TPMS code detection wasn’t successful in our specific test, the unit is advertised to support TPMS diagnostics.
The Topdon TopScan offers detailed live data capabilities, providing access to parameters as specific as air-fuel mixture per cylinder and compression testing results. While not strictly a professional-grade tool, it offers a wide array of diagnostic options suitable for most vehicle owners.
With its compact wireless design, extensive vehicle system coverage, and broad range of diagnostic capabilities, the Topdon TopScan Bluetooth scanner is a highly viable and budget-friendly addition to any toolbox in 2024.
The Bosch 1300 OBD scanner offers compatibility with both older OBD1 and modern OBD2 vehicle systems; (photo/Eric Phillips)
OBD2 Scanners Comparison Chart
Scroll right to view all columns: Price, Connection, Data Log, Identifies Solution, Live Data, and Vehicle Compatibility.
| OBD2 Scanner | Price | Connection | Data Log | Identifies Solution | Live Data | Vehicle Compatibility |
|---|---|---|---|---|---|---|
| OBDLINK MX+ | $140 | Bluetooth (via app) | Trip stats and vehicle stats for every drive | Yes | Yes, viewable on 6-gauge digital display via app | All 1996 and newer cars in U.S. and international markets |
| Motopower MP69033 | $24 | Wired | No | No | Some | Most U.S., E.U., and Canada models |
| Bluedriver Pro | $100 | Bluetooth | Freeze frame | Yes, multiple fixes | Yes | Most U.S., E.U., and Canada |
| Bosch 1300 OBD | $300 | Wired | Yes | Yes, 26 million fixes in database | Yes | All U.S. OBD1 and OBD2 vehicles |
| Ancel BD31 | $88 | Wired and Bluetooth | Freeze frame | Yes | Yes | All OBD2 vehicles plus E.U. and Canada |
We tested a range of OBD2 scanners to identify the best options for various user needs and budgets in 2024; (photo/Eric Phillips)
How We Tested OBD2 Scanners
Our Expert Testers
Our primary tester, Eric Phillips, combines a decade of experience as an outdoor professional with a lifelong passion for automotive mechanics. From his early years working on and building cars to his ongoing hobby of truck customization, Phillips has always relied on code readers for vehicle diagnostics.
Tester and photographer Chip Jordan is a seasoned outdoorsman and gear enthusiast with extensive experience working on engines and vehicles. While appreciating classic vehicles, Jordan also embraces modern automotive technology, ensuring he has the latest diagnostic tools for contemporary cars.
Our Testing Locations
Phillips conducts testing in Southwest Colorado, while Jordan is based in New Mexico. Their extensive road trips throughout the western US and across the country provide diverse testing environments.
Field testing of the Topdon TopScan OBD2 Bluetooth Scanner to assess real-world performance; (photo/Chip Jordan)
Our Testing Methodology
Our team evaluated OBD2 scanners through two main methods. First, we used each scanner to read, diagnose, and clear diagnostic trouble codes. Second, we assessed the scanners’ ability to retrieve and display comprehensive vehicle information. On our 2014 Ford F-150 Raptor test vehicle, we intentionally disconnected the Mass Air Flow (MAF) sensor to trigger a check engine light and generate P0103 and P0113 codes. We also performed tests on a 2008 Ford F-250 with an active TPMS code and logged historical codes.
We compared the speed and ease of reading and clearing codes across different scanners, as well as the amount of diagnostic information provided for each code. We also evaluated the availability of potential fixes or diagnostic guidance offered by each scanner. At a fundamental level, every OBD2 scanner we tested successfully read and cleared the generated codes.
Furthermore, our testing team examined the breadth of information accessible through each scanner. We assessed the ability to check ABS and airbag systems, the quantity of live data parameters that could be monitored simultaneously, and the ease of viewing live data while driving (with the strong recommendation to pull over for detailed data analysis, similar to avoiding texting while driving – live data glancing is intended only for quick checks comparable to speedometer or fuel gauge monitoring). We thoroughly explored the menus and functionalities of each scanner to determine which provided the most comprehensive vehicle information.
Our evaluations were based on a range of metrics, including vehicle compatibility, live data capabilities, diagnostic features, connection type, ease of use, vehicle information access, functions, data logging, test reports, overall features, and customer support.
Beyond our hands-on testing, we also considered popular, award-winning, versatile, and budget-friendly OBD2 scanner models to encompass a wide spectrum of driver needs, vehicle types, applications, preferences, and budgets for 2024.
Practice using your OBD2 scanner before encountering a vehicle breakdown to ensure confident and efficient diagnostics; (photo/Eric Phillips)
Buyer’s Guide: Choosing the Right OBD2 Scanner in 2024
Read & Clear Codes
The most basic yet crucial function of any OBD2 scanner is the ability to read and clear diagnostic trouble codes that trigger check engine lights. What exactly are these codes? A trouble code is generated by your vehicle’s onboard computer system whenever it detects a condition that falls outside of normal operating parameters. These issues can arise within the engine, transmission, emissions system, or other vehicle systems.
Clearing a code essentially removes it from the system’s memory and turns off the check engine light. However, if the underlying problem that caused the code is not addressed, the vehicle will likely re-detect the issue, regenerate the code, and reactivate the check engine light. Clearing a code can be useful for confirming whether a problem is recurring or for verifying the effectiveness of a repair attempt.
The Bluedriver Pro is designed for ease of use, making it an excellent choice for users new to OBD2 scanners in 2024; (photo/Eric Phillips)
Foundation: Understanding Error Codes
OBD2 diagnostic trouble codes are standardized five-character codes that provide information about the nature and location of a vehicle problem. The structure of these codes is as follows:
-
First Character: Indicates the primary system affected:
- B: Body systems (e.g., interior, accessories)
- C: Chassis systems (e.g., braking, steering, suspension)
- P: Powertrain systems (e.g., engine, transmission)
- U: Network and data communication systems
-
Second Character: Indicates whether the code is generic or manufacturer-specific:
- 0: Generic (SAE standardized codes common to all manufacturers)
- 1: Enhanced (Manufacturer-specific codes, providing more detailed information)
-
Third Character: Specifies the subsystem within the primary system:
- 1: Emission management system (fuel or air metering)
- 2: Injector circuit (fuel or air metering)
- 3: Ignition system or misfire
- 4: Emission control system (auxiliary emission controls)
- 5: Idle control system and vehicle speed control
- 6: Computer output circuit
- 7: Transmission system
- 8: Transmission system
- 9: SAE Reserved
- 0: SAE Reserved
-
Fourth and Fifth Characters: These final two characters are numerical and provide further specificity regarding the particular fault within the identified system and subsystem.
The OBDLINK MX+ scanner performed exceptionally well in our tests and is recognized as a top-quality OBD2 scanner in 2024; (photo/Eric Phillips)
Code Reading Interface
While every OBD2 scanner featured in our guide can connect to your vehicle and retrieve these five-character trouble codes, the user experience and the level of detail provided can vary considerably. Some scanners are designed for simplicity and ease of use, while others offer more advanced features and in-depth diagnostics. For instance, the Motopower MP69033 prioritizes simplicity with a basic menu that is straightforward for reading and clearing fundamental codes.
Conversely, the Bosch 1300 OBD, while highly capable, requires a few more steps before displaying codes, involving a series of prompts. Despite this slightly more involved process, it remains relatively fast and offers the advantage of reading airbag and ABS codes in addition to standard OBD2 codes.
Bluetooth-enabled code readers utilize smartphone apps for code retrieval, offering a more modern and feature-rich user interface compared to traditional button-operated scanners. These apps typically guide you through a step-by-step connection process to your vehicle and then present error codes in a clear, often more detailed format.
The Ancel BD31 and the Bluedriver Pro both enhance diagnostic capabilities by reading not only standard OBD2 codes but also airbag and anti-lock braking system (ABS) codes. The Bluedriver Pro further expands its coverage to include tire-pressure monitoring system (TPMS) codes. Leading the pack in terms of comprehensive code reading, the OBDLINK MX+ and the Topdon TopScan OBD2 Bluetooth Scanner are capable of reading ABS, airbag, and TPMS codes, along with accessing additional manufacturer-specific codes and parameters for GM and Ford vehicles that are often inaccessible to other code readers.
The Ancel BD31 provides versatile connectivity as both a Bluetooth and wired scanner and includes a helpful HUD feature; (photo/Eric Phillips)
Diagnostics
Beyond simply reading error codes, effective diagnostics is crucial for understanding the root cause of vehicle problems. When an OBD2 scanner retrieves a code, it typically provides a basic description associated with that code. For example, the Motopower MP69033 primarily displays the code itself and a fundamental description.
Consider the code P0113, which indicates “Intake Air Temperature Sensor 1 Circuit High.” Having the code is just the first step; the next is diagnosing why this code was triggered. Many OBD2 scanners in our guide go beyond basic code reading to offer more advanced diagnostic assistance.
The Bosch 1300 OBD, while providing similar on-screen code information to the Motopower MP69033, incorporates a substantial internal library of 26 million potential fixes for various error codes. Users can input a specific error code into the Bosch 1300 OBD to access a list of possible solutions, a valuable feature for troubleshooting.
Bluetooth-enabled OBD2 scanners leverage internet connectivity to expand diagnostic resources. Upon displaying an error code, these scanners often provide a direct link to online resources for searching the specific code and finding potential fixes. This functionality, however, requires cellular service or Wi-Fi access, unlike the Bosch 1300 OBD, which stores its diagnostic database internally for offline use. The Ancel BD31 stands out in this area, offering up to six potential causes for each error code, along with a convenient link to Google for further code-specific research, providing comprehensive diagnostic support.
Bluetooth-compatible OBD2 scanners provide enhanced data and diagnostic features through user-friendly mobile apps; (photo/Eric Phillips)
Live Data & Real-Time Monitoring
Beyond code reading and diagnostics, OBD2 scanners can also provide real-time data about your vehicle’s operation. Each diagnostic trouble code is linked to a specific sensor in your vehicle. When a sensor detects data outside of its normal range, it triggers a code. OBD2 scanners allow you to view live data streams from these sensors, giving you insights into your vehicle’s performance in real-time.
Some scanners may limit you to viewing data from only one sensor at a time, while others can monitor and display data from multiple sensors simultaneously. These scanners may present data numerically, graphically, or through dashboard-style displays for easy interpretation.
The OBDLINK MX+ excels in live data monitoring. It features a heads-up display mode that mimics a vehicle’s dashboard gauges, showing 13 pre-selected, easily understandable parameters. Additionally, it allows users to select and monitor any of the vehicle’s sensors on a separate screen. Furthermore, the OBDLINK MX+ goes beyond real-time data by archiving sensor data and logging trip information, including GPS data, trip distance, and fuel economy. This comprehensive data logging can be invaluable for analyzing vehicle performance over time.
In terms of advanced live data capabilities, the Topdon TopScan OBDII Bluetooth Scanner stands out. It offers features that extend into performance tuning, such as the ability to adjust the air-fuel mixture and perform compression testing on individual cylinders – features that appeal to performance enthusiasts seeking detailed engine data and control.
The Bosch 1300 OBD includes an extensive set of six different connector cables to ensure compatibility with a wide range of vehicles; (photo/Eric Phillips)
Ease of Use
For those new to automotive diagnostics, OBD2 scanners might initially seem like complex tools reserved for professionals. However, modern OBD2 scanners are designed to be user-friendly, making them accessible to automotive enthusiasts of all skill levels. Most scanners include step-by-step instructions and prompts to guide you through the process of connecting to your vehicle and performing scans.
Bluetooth-compatible scanners particularly excel in ease of use. To utilize these scanners, you typically download a dedicated app to a compatible smartphone or tablet. After plugging the scanner into the vehicle’s OBD2 port and establishing a Bluetooth connection, the scanner is controlled via the app. These apps generally offer more intuitive and visually appealing user interfaces compared to traditional wired scanners.
Among the scanners tested, the Bluedriver Pro and its corresponding app were found to be exceptionally easy to use. Reading and clearing codes is accomplished through a simple, straightforward menu system. The app provides clear instructions at each step, ensuring a smooth and intuitive user experience across various functions. Furthermore, a readily accessible user manual is integrated into the app for quick reference.
OBD2 scanners utilize various display interfaces to present vehicle diagnostic information, catering to different user preferences; (photo/Eric Phillips)
Connection
OBD2 scanners connect to your vehicle’s OBD2 port, typically located under the dashboard on the driver’s side. The connection method can be either wired or Bluetooth.
Wired
Wired OBD2 scanners are the more traditional design. These scanners integrate the processing unit, display screen, and control buttons into a single handheld device. They connect to the vehicle’s OBD2 port via a cable.
Wired scanners typically do not require batteries or external power sources, drawing power directly from the vehicle’s OBD2 port. Some, like the Bosch 1300 OBD, can even operate offline, storing extensive databases like its 26 million code fixes internally. However, the wired connection necessitates being physically close to the OBD2 port, usually requiring the user to be seated in the front of the vehicle to operate the scanner. Wired scanners also tend to be bulkier than their Bluetooth counterparts.
Bluetooth
Bluetooth OBD2 scanners are characterized by their compact size. They plug into the vehicle’s OBD2 port but operate wirelessly, connecting to a smartphone or tablet via Bluetooth. The processing power and user interface are provided by a dedicated app installed on the user’s mobile device.
Utilizing a smartphone or tablet as the display offers advantages such as larger, higher-resolution screens and more intuitive touch-based user interfaces. Bluetooth scanners are also significantly more compact and portable when not in use and can often be left plugged into the OBD2 port even when powered off.
However, Bluetooth scanners rely on a compatible, charged smartphone or tablet with the app installed for operation. They may also require cellular or Wi-Fi connectivity to access certain features, such as online diagnostic databases. Functionality may be limited in areas with poor or no cellular coverage.
We evaluated a diverse range of OBD2 scanners to help you select the best option for your automotive diagnostic needs in 2024; (photo/Eric Phillips)
Price & Value
The OBD2 scanner market offers options for every budget, from basic code readers to advanced professional-grade tools. This price and value analysis will help you determine the best OBD2 scanner for your needs and financial considerations in 2024.
Budget
In the sub-$100 price range, you’ll find excellent value options like the Motopower MP69033 ($24), Ancel BD31 ($88), and TOPDON TopScan OBD2 ($89).
These budget-friendly scanners, particularly the Bluetooth-enabled Ancel BD31 and TOPDON TopScan OBD2, offer capabilities that exceed the needs of many DIY users. They represent excellent value for their functionality, providing more than just basic code reading and offering features that can assist in diagnosing and addressing a range of vehicle issues.
However, for users seeking the most basic and affordable solution, the Motopower MP69033 is an outstanding choice. It efficiently reads and clears codes with its simple, straightforward design, fulfilling its core function at a remarkably low price point, making it our top budget pick for 2024.
The Topdon TopScan OBD2 Bluetooth Scanner provides a strong set of features at a mid-tier price point in 2024; (photo/Chip Jordan)
Mid-Tier
Stepping up to the mid-price tier, we find the Bluedriver Pro ($100) and the OBDLINK MX+ ($140). These Bluetooth scanners deliver a significant leap in features and performance, offering capabilities that will satisfy even serious automotive enthusiasts.
Our top recommendation in this price range, and our overall top pick for 2024, is the OBDLINK MX+. It not only provides a wider array of vehicle metrics than any other scanner we tested, but it also offers compatibility with third-party apps, enabling advanced vehicle customization and performance tuning – professional-grade functionality at a mid-range price.
Premium
In the premium category, the Bosch 1300 OBD ($300) stands alone. Unlike many other scanners in our guide, the Bosch 1300 OBD is a wired unit. However, its premium features and capabilities cater to users who are serious about working on both modern OBD2 and older OBDI vehicles. While the most expensive scanner in our lineup, it remains a bargain compared to professional-grade diagnostic tools and rivals their performance. The Bosch 1300 OBD is also unique in its ability to read codes from older OBDI vehicles and includes a comprehensive database of 26 million experience-based fixes and a supplemental power supply for diagnosing vehicles with dead batteries, making it a top premium pick for 2024.
The Topdon TopScan OBD2 Bluetooth scanner features a clear and easy-to-read app interface, enhancing user experience in 2024; (photo/Chip Jordan)
Frequently Asked Questions
What does an OBD2 scanner do?
OBD stands for On-Board Diagnostics. OBD2 refers to the second generation of this standardized system, which is used across most modern light-duty vehicles to access vehicle diagnostic information. In essence, an OBD2 scanner communicates with your car’s computer system.
This communication allows the scanner to perform various functions, including reading and clearing check engine lights or diagnostic trouble codes. More advanced scanners can interpret vehicle data to provide diagnostic information, suggesting potential causes and solutions for detected problems. Some scanners also offer capabilities like measuring driving performance and displaying real-time vehicle sensor data.
The OBDLINK MX+ provides vehicle data through a user-friendly 6-gauge digital display within its companion app; (photo/Eric Phillips)
Do OBD2 scanners work on all vehicles?
In 1996, OBD2 became mandatory for all vehicles manufactured for sale in the United States. The European Union followed suit in 2001. Therefore, OBD2 scanners should be compatible with virtually all cars manufactured in or after these years in these regions.
As new vehicle models are introduced, OBD2 scanner manufacturers regularly update their devices to maintain compatibility. However, it may take a short period for scanners to be fully updated for the very latest models.
Vehicles manufactured for markets like Canada and Japan may have their own regional variations of OBD2 standards. It’s always advisable to confirm compatibility with your specific vehicle before purchasing an OBD2 scanner.
Can you control your car through OBD2?
While OBD2 scanners provide access to your vehicle’s computer system, they are not designed for direct control of driving functions like steering or acceleration.
However, OBD2 scanners do allow you to control various vehicle systems related to diagnostics and maintenance. This includes the ability to clear check engine lights, reset airbag and anti-lock brake system (ABS) warnings, and reset oil maintenance lights, among other functions.
Bluetooth-operated OBD2 scanners offer a convenient and enhanced user experience through smartphone apps; (photo/Eric Phillips)
What problems can OBD2 scanners detect?
OBD2 scanners are designed to detect a standardized set of diagnostic trouble codes and check engine lights, covering a wide range of potential vehicle issues.
Typically, your vehicle’s check engine light will illuminate when an error code is generated. These codes are five characters long and provide both generic and manufacturer-specific information about the problem.
OBD2 scanners can detect issues within various vehicle systems, including the engine, transmission, emissions control, electronics, airbags, and brakes, providing a comprehensive overview of your vehicle’s health.
The Ancel BD31 app offers multiple potential fixes for each diagnostic trouble code, enhancing its diagnostic utility; (photo/Eric Phillips)
What’s the difference between OBD1 and OBD2?
Before OBD2 standardization, some vehicle manufacturers utilized OBD1 systems, primarily in vehicles manufactured before the mid-1990s. This included 1984-1995 Ford and GM vehicles and 1989-1995 Chrysler and Toyota models. OBD1 systems were less standardized and provided more limited diagnostic information compared to OBD2.
OBD2 brought standardization to error codes across different manufacturers. In OBD1 systems, the same error code could indicate different problems depending on the vehicle manufacturer. OBD2 standardized these codes, making diagnostics more consistent and accessible.
Uniquely, the Bosch 1300 OBD is the only scanner in our guide that offers compatibility with both OBD1 and OBD2 systems, making it a versatile option for users working on both older and newer vehicles.
DTC stands for Diagnostic Trouble Code, the standard term for error codes read by OBD2 scanners; (photo/Eric Phillips)
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