Does your car sometimes feel like it’s speaking a different language? At techcarusa.com, we understand that feeling. That’s why we always recommend keeping an OBD2 scanner handy in your glovebox. Think of it as a universal translator for your vehicle, ready to decipher those mysterious engine sputters, unusual noises, or the dreaded check engine light.
An OBD2 scanner, also known as a code reader or scan tool, acts as the communication bridge to your car’s onboard computer. These incredibly useful automotive diagnostic tools allow you to understand and clear trouble codes, turn off that persistent check engine light, and get a real-time snapshot of your vehicle’s health and performance data.
While the fundamental function of OBD2 scanners is largely standardized across vehicles, the features, capabilities, and designs can vary significantly. Different scanners cater to different car makes and models, and some go beyond simply reading codes to offer potential fixes, advanced diagnostics, and a wealth of data about your driving habits and vehicle condition. You can find basic, budget-friendly options for simple code reading, all the way up to professional-grade scanners like the Bosch 1300 OBD, which handles both older OBD1 and modern OBD2 systems. Conversely, for streamlined OBD2 code reading and in-depth diagnostics in a compact package, the OBDLINK MX+ is a standout choice.
To help you navigate the world of OBD2 scanners and find the perfect tool for your needs in 2024, we’ve put together a comprehensive guide. Dive into our Buyer’s Guide to understand the key features and functionalities. For a quick overview of pricing and value, jump to the Price & Value section. Or, if you’re ready to compare top models side-by-side, check out our detailed Comparison Chart below. Otherwise, keep scrolling to explore 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 highly-rated Topdon TopScan OBD2 Bluetooth Scanner.
The Best OBD2 Scanners of 2024: Top Recommendations
Here are our top picks for the best OBD2 scanners available in 2024, catering to a range of needs and budgets:
Best Overall OBD2 Scanner
OBDLINK MX+
Key Features:
- Connection: Bluetooth (via dedicated mobile app)
- Data Logging: Comprehensive trip and vehicle statistics for every drive
- Solution Identification: Yes, provides potential fixes and diagnostic information
- Live Data: Real-time data streaming, viewable on a customizable 6-gauge digital dashboard within the app
- Display: Smartphone or tablet (iOS, Android, Windows)
- Vehicle Compatibility: Universal compatibility with all 1996 and newer vehicles sold in the U.S. and international markets (OBD2 compliant)
Pros:
- Unlocks advanced diagnostic data for Ford and General Motors vehicles, including unique parameters like cooled/heated seat status.
- Incorporates battery drain and overvoltage protection, allowing for safe, continuous connection.
- Broad compatibility with iOS, Android, Windows devices, and numerous third-party OBD2 apps.
- Enhanced security features to prevent unauthorized access and hacking attempts.
Cons:
- May have limited compatibility with very new vehicles, particularly 2022 models and newer, although updates are regularly released to expand coverage.
Expert Review:
The OBDLINK MX+ ($140) stands out as a premium OBD2 scanner designed to extract the maximum possible information from your vehicle’s OBD2 port. Its compact and user-friendly design makes it suitable for everyday use. The “plug-and-forget” nature of the MX+ is a significant advantage, allowing you to leave it connected to your OBD2 port continuously without worrying about battery drain, thanks to its built-in protection circuits. Furthermore, OBDLINK emphasizes security, incorporating mechanisms to prevent unauthorized access, a crucial feature in today’s connected world.
In our hands-on testing, the MX+ consistently delivered the most comprehensive data compared to other scanners. Diagnostic codes were displayed clearly and were easy to understand and clear. The device excelled in generating detailed trip reports and vehicle logs, capturing hundreds of parameters, including detailed fuel consumption metrics – offering a level of insight unmatched by competitors. Notably, for many recent General Motors, Ford, Mazda, Nissan, and Toyota vehicles, including our test vehicles, the MX+ extended its diagnostic reach to advanced vehicle networks, accessing and clearing codes related to systems like airbags, ABS (anti-lock braking systems), and TPMS (tire-pressure monitoring systems).
A key differentiator of the MX+ is its open architecture and compatibility with a vast ecosystem of third-party apps. It seamlessly integrates with hundreds of apps that unlock enhanced vehicle performance monitoring, allow customization of vehicle settings, enable remote engine start on compatible vehicles, and even provide specialized diagnostics for electric vehicles. Beyond detailed logs and graphs, the MX+ offers a helpful heads-up display (HUD) mode, presenting 13 pre-selected parameters in a clear, gauge-style format directly on your smartphone or tablet screen. This feature expands the real-time data you can monitor while driving, keeping essential vehicle information easily accessible.
For those interested in performance driving, the MX+ includes a performance mode that measures key metrics such as 0-60 mph acceleration, quarter-mile and half-mile times. While compatibility may be somewhat limited with the very latest 2022 and newer models, OBDLINK is actively expanding coverage through ongoing software updates, which are provided free of charge.
In conclusion, although the OBDLINK MX+ represents a higher investment compared to other Bluetooth scanners we evaluated, it justifies its price with unparalleled data access, ease of continuous use, and an excellent interface for live data monitoring. For users who demand the most comprehensive OBD2 scanner capabilities and in-depth vehicle insights, the MX+ is undoubtedly the top choice in 2024.
Best Budget OBD2 Scanner
Motopower MP69033
Key Features:
- Connection: Wired (direct OBD2 port connection)
- Data Logging: No data logging capabilities
- Solution Identification: No, basic code reading only
- Live Data: Limited live data parameters available
- Display: 2.8-inch monochrome LCD screen
- Vehicle Compatibility: Broad compatibility with most U.S., European, and Canadian vehicles
Pros:
- Extremely affordable price point, making it accessible to all car owners.
- Features large, ergonomically designed buttons for easy operation, even with gloves.
- Simple and straightforward to use for basic code reading and clearing.
Cons:
- Lacks advanced features found in higher-end scanners.
- Offers only basic code reading functionality without diagnostic assistance.
- The monochrome screen may not be as clear or easy to read in all lighting conditions.
Expert Review:
If you’re seeking a no-frills, budget-friendly OBD2 scanner that gets the job done, the Motopower MP69033 ($24) is an excellent choice. This wired scanner prioritizes simplicity and affordability, providing essential code reading and clearing capabilities without unnecessary bells and whistles. Its straightforward design includes large buttons and a basic menu, making it user-friendly even for those unfamiliar with OBD2 scanners.
The MP69033 is a compact, plug-and-play device featuring a 2.8-inch black and white LCD screen. Its 2.5-foot cable provides ample reach to comfortably use the scanner from the driver’s seat. Powered directly by your vehicle’s OBD2 port, it eliminates the need for batteries or charging.
Supporting six languages and compatible with most modern vehicles, the MP69033 offers broad vehicle coverage. However, to achieve its budget price, some features are omitted. While it does display live data, the screen’s readability can be challenging, and it only shows one parameter at a time. Advanced diagnostics and extensive data logging are not included.
However, advanced technology isn’t always necessary or desired by every driver. For those who need a reliable, analog-style scanner for basic code reading and clearing, the MP69033 is an ideal solution. It provides essential functionality at an unbeatable price, making it the best budget OBD2 scanner in 2024.
Easiest-to-Use OBD2 Scanner
Bluedriver Pro
Key Features:
- Connection: Bluetooth wireless connectivity
- Data Logging: Freeze frame data capture
- Solution Identification: Yes, provides multiple potential fixes and repair information
- Live Data: Real-time data monitoring capabilities
- Display: Smartphone or tablet (via dedicated app)
- Vehicle Compatibility: Wide compatibility with most U.S., European, and Canadian vehicles
Pros:
- Exceptionally user-friendly mobile app interface for intuitive navigation.
- Generates comprehensive diagnostic reports with detailed code information and repair guidance.
- Reads and interprets codes from advanced systems including airbag (SRS), TPMS, and ABS.
Cons:
- Monitoring live data while driving can be challenging and potentially distracting.
- Accessing the user manual requires internet connectivity (cellular data or Wi-Fi).
- Not compatible with third-party OBD2 apps, limiting expandability.
Expert Review:
For users new to OBD2 scanners or those who prioritize ease of use and a streamlined experience, the Bluedriver Pro ($100) is an excellent choice. This Bluetooth-powered OBD2 scanner pairs with a well-designed, user-friendly mobile app, guiding you through every step of the diagnostic process. The app’s intuitive menu and clear instructions simplify reading, understanding, and clearing check engine lights.
When reading codes with the Bluedriver app, it generates a complete repair report for each detected code. These reports include the vehicle’s VIN, the specific code and its frequency, a list of potential solutions with links to relevant parts, and a feature to record your own repair notes within the app. Reports can be conveniently saved and shared as PDF files. Furthermore, the Bluedriver Pro extends its diagnostics beyond basic engine codes to include ABS, airbag, and TPMS codes, offering broader system coverage.
The app includes both helpful instructional prompts and a complete user manual. However, the user manual is provided as a series of YouTube videos, requiring internet access for viewing. While live data monitoring is available, the presentation is less intuitive and the data refresh rate is slower compared to some competitors like the OBDLINK MX+. The Bluedriver Pro is also limited to its proprietary app and does not support connections with third-party OBD2 applications.
Despite these minor drawbacks, the Bluedriver Pro excels in user-friendliness and Bluetooth app integration. Even novice users can effectively interpret and clear codes, identify potential solutions, and order necessary parts with ease. Its combination of comprehensive diagnostics and an intuitive interface makes it the easiest-to-use OBD2 scanner in 2024.
Best Combo OBD1 and OBD2 Scanner
Bosch 1300 OBD
Key Features:
- Connection: Wired, direct OBD2 and OBD1 port connections
- Data Logging: Comprehensive data logging capabilities
- Solution Identification: Yes, integrated database of over 26 million verified fixes
- Live Data: Real-time data streaming and display
- Display: 3.5-inch color LCD screen
- Vehicle Compatibility: Compatible with all U.S. OBD1 and OBD2 compliant vehicles
Pros:
- Unique compatibility with both OBD1 and OBD2 vehicle systems, supporting a wide range of vehicles.
- Reads ABS and SRS (airbag) codes in addition to standard OBD2 codes.
- Battery-powered operation allows for diagnostics even when the vehicle battery is dead.
- Extensive built-in database of 26 million experience-based fixes, accessible offline.
Cons:
- Highest price point among scanners tested.
- Bulky design with multiple cables, requiring more storage space.
- Lacks fuel mileage data and related fuel efficiency metrics.
Expert Review:
Bosch is a renowned name in automotive diagnostics, trusted by professionals and DIY enthusiasts alike. The Bosch 1300 OBD ($300) is a powerful diagnostic tool designed for comprehensive vehicle communication. Its standout feature is its dual compatibility with both OBD2 and older OBD1 systems, making it the only scanner in our roundup to support these legacy systems.
The Bosch 1300 OBD comes as a wired unit with a set of six different adapter cables to ensure compatibility with a wide array of vehicles. These cables include connectors for 1984-1995 GM and Ford vehicles, 1989-1995 Chrysler and Toyota vehicles, and all OBD2-equipped vehicles. This extensive cable set provides unparalleled vehicle coverage.
The scanner can be powered by a 9-volt vehicle outlet or its internal battery. The battery functionality is particularly useful, enabling diagnostics even on vehicles with a dead battery. In addition to standard OBD2 codes, the Bosch 1300 OBD can detect and read ABS and airbag codes, expanding its diagnostic capabilities.
Beyond its OBD1 compatibility, the Bosch 1300 OBD features “Code Connect,” an integrated database of 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, making it reliable in any location.
While the Bosch 1300 OBD is a highly capable automotive diagnostic tool, it lacks the ability to read fuel data, a feature that might be expected at its premium price point. Its physical size and numerous cables also make it less compact than other scanners. However, if you need a top-tier code reader that works seamlessly with both OBD1 and OBD2 vehicles, the Bosch 1300 OBD is the best choice in 2024, offering unmatched versatility and a wealth of diagnostic information.
Best Bluetooth and Wired OBD2 Scanner
Ancel BD31
Key Features:
- Connection: Dual connection modes – Wired and Bluetooth
- Data Logging: Freeze frame data capture
- Solution Identification: Yes, provides diagnostic suggestions and potential fixes
- Live Data: Real-time data monitoring across multiple parameters
- Display: Smartphone/tablet app (Bluetooth mode) and integrated 1.5 x 2-inch handheld screen (wired mode)
- Vehicle Compatibility: Compatible with all OBD2 compliant vehicles, including U.S., European, and Canadian models
Pros:
- Offers multiple potential fixes for each detected check engine code, aiding in diagnosis.
- Seamlessly switches between Bluetooth wireless and wired handheld operation.
- The handheld unit can be used as an auxiliary heads-up display (HUD) with included vent and magnet mounts.
Cons:
- The integrated screen on the handheld unit can be small and challenging to read for some users.
- Wired connection mode provides less comprehensive data compared to Bluetooth app mode.
- Does not clear ABS or airbag codes, limiting system coverage.
Expert Review:
The Ancel BD31 ($88) presents a unique and versatile design as a combination wired and Bluetooth OBD2 scanner. It effectively operates in three distinct modes: wired handheld scanner, Bluetooth scanner via mobile app, and heads-up display (HUD).
In Bluetooth mode, while the Ancel app’s menu system isn’t the most intuitive, it successfully reads codes and provides engine diagnostics when connected through a smartphone app. The diagnostic reports for engine codes are a strong point of the BD31.
For our P0113 test code, the Ancel BD31 generated an impressive six potential fixes, surpassing the number offered by other scanners in our test. Additionally, when connected to the internet, the app provides a quick link to Google for searching the specific code for your vehicle, further assisting in diagnosis.
The mobile app enables live data monitoring, displaying three customizable gauges that can be used in a HUD configuration while driving. In wired mode, the Ancel BD31 functions as a standalone handheld scanner with a small screen and four buttons, capable of reading codes without a phone or tablet. The third mode utilizes the handheld unit as a secondary HUD when plugged into the OBD2 port, displaying user-selected parameters like boost pressure or air-fuel ratio. The included magnet and vent mounts facilitate easy placement of the handheld unit for optimal viewing while driving.
While the Ancel BD31’s three-in-one functionality is appealing, the built-in screen is quite small and can be difficult to read. It also lacks the ability to diagnose or clear ABS and airbag codes. However, if you value versatility, multiple connection options, and detailed diagnostic data, the Ancel BD31 is a solid and feature-rich OBD2 scanner for 2024.
Topdon TopScan OBD2 Bluetooth Scanner
Key Features:
- Connection: Wireless Bluetooth
- Data Logging: Freeze Frame data capture
- Solution Identification: Yes, provides potential fixes and diagnostic information
- Live Data: Real-time data streaming and display
- Display: Smartphone or tablet (via dedicated app)
- Vehicle Compatibility: Extensive coverage of 98% of vehicles from 1996-2023
Pros:
- Compact and portable Bluetooth design.
- User-friendly mobile app interface.
- Provides live data monitoring and diagnostic information.
- Reads and clears ABS and Airbag codes for comprehensive system coverage.
Cons:
- Officially supports vehicles up to 2023 models, but Topdon provides regular updates to expand coverage.
Expert Review:
The Topdon TopScan OBD2 Bluetooth Scanner ($89) delivers impressive capabilities in a compact and affordable package. This wireless Bluetooth OBD2 scanner boasts broad vehicle compatibility, covering 98% of vehicles manufactured between 1996 and 2023.
Pairing the Topdon TopScan with its mobile app is a seamless process. The app is well-designed, easy to navigate, and automatically recognizes your vehicle based on its VIN (Vehicle Identification Number), which can be scanned or entered manually.
In our testing, on a 2008 Ford F250, the TopScan effectively recognized and cleared historical fault codes. While it did not detect an active TPMS sensor fault in our test vehicle, it is designed to support TPMS diagnostics. Clearing existing codes was straightforward and user-friendly.
The TopScan offers detailed live data capabilities, providing access to parameters such as air-fuel mixture per cylinder and compression testing data. While not strictly a professional-grade tool, the Topdon TopScan offers a wide array of features suitable for both DIY enthusiasts and experienced mechanics.
With its compact wireless design, extensive vehicle system coverage, and a comprehensive feature set, the Topdon TopScan Bluetooth scanner is a compelling option for adding to your toolbox in 2024, offering excellent value without a significant financial investment.
The Bosch 1300 OBD offers both OBD1 and OBD2 compatibility, making it a versatile diagnostic tool; (photo/Eric Phillips)
OBD2 Scanners Comparison Chart: 2024 Models
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 & Vehicle Stats | Yes | Yes, 6-gauge digital display via app | All 1996+ U.S. & International |
| Motopower MP69033 | $24 | Wired | No | No | Limited | Most U.S., EU, Canada |
| Bluedriver Pro | $100 | Bluetooth | Freeze Frame | Yes, Multiple Fixes | Yes | Most U.S., EU, Canada |
| Bosch 1300 OBD | $300 | Wired | Yes | Yes, 26M+ Fixes DB | Yes | All U.S. OBD1 & OBD2 |
| Ancel BD31 | $88 | Wired & Bluetooth | Freeze Frame | Yes | Yes | All OBD2, EU, Canada |
| Topdon TopScan OBD2 | $80 | Bluetooth | Freeze Frame | Yes | Yes | 98% of 1996-2023 Vehicles |
We rigorously tested a range of OBD2 scanners to identify the best options for various user needs; (photo/Eric Phillips)
How We Tested the Best OBD2 Scanners of 2024
Meet Our Expert Testers
Our primary tester, Eric Phillips, brings a decade of experience as an outdoor professional combined with a lifelong passion for automotive mechanics. From his early years working on cars to his ongoing hobby of building custom trucks, Eric has consistently relied on OBD2 scanners and understands their practical value.
Joining Eric is Chip Jordan, a seasoned outdoorsman, photographer, and gear expert. Chip’s extensive experience wrenching on a wide range of engines and vehicles, from classic cars to modern automobiles, provides a comprehensive perspective on OBD2 scanner technology and its application.
Testing Locations
Eric conducts his testing in the diverse terrain of Southwest Colorado, while Chip is based in New Mexico. Their road trips throughout the Western US and across the country provide ample opportunity to test OBD2 scanners in real-world driving conditions.
Real-world testing of the Topdon TopScan OBD2 Bluetooth Scanner in action; (photo/Chip Jordan)
Our Detailed Testing Process
Our team employed a two-pronged approach to evaluate OBD2 scanners. First, we focused on core functionality: reading, diagnosing, and clearing diagnostic trouble codes. Second, we assessed the scanners’ ability to provide comprehensive vehicle information and live data. Using a 2014 Ford F-150 Raptor as our primary test vehicle, we intentionally triggered check engine lights and specific codes (P0103 and P0113) by disconnecting the MAF (mass air flow) sensor. We also conducted tests on a 2008 Ford F-250 with an existing TPMS fault and historical diagnostic codes.
Across all scanners, we meticulously compared the speed and ease of reading and clearing codes, as well as the depth of code information provided. We evaluated the availability of diagnostic assistance and potential fixes offered by each scanner. At a fundamental level, all OBD2 scanners tested successfully read and cleared the generated codes.
Beyond basic code reading, our testing examined the breadth of information accessible through each scanner. We assessed the ability to access ABS and airbag systems, the quantity of live data parameters that could be monitored simultaneously, and the clarity and usability of real-time data displays while driving (always prioritizing safe driving practices by pulling over for in-depth data analysis). We thoroughly explored each scanner’s menus and features to determine which models offered the most comprehensive vehicle insights and diagnostic capabilities for our readers.
Our final rankings and recommendations are based on a comprehensive evaluation across numerous metrics, including vehicle compatibility, live data capabilities, diagnostic features, connection type, ease of use, vehicle information access, overall functionality, data logging, test reporting, and customer support.
In addition to our hands-on testing, we considered market popularity, industry awards, universal compatibility, and affordability to select OBD2 scanners that cater to a wide range of drivers, vehicles, needs, and budgets in 2024.
Familiarizing yourself with your OBD2 scanner before encountering vehicle issues is highly recommended; (photo/Eric Phillips)
Buyer’s Guide: How to Choose the Best OBD2 Scanner for Your Needs in 2024
Choosing the right OBD2 scanner depends on your specific needs, technical expertise, and budget. Here’s a comprehensive buyer’s guide to help you make an informed decision in 2024:
Essential Functions: Read & Clear Codes
The most fundamental function of any OBD2 scanner is the ability to read and clear diagnostic trouble codes (DTCs) that trigger the check engine light. But what exactly are these codes? A DTC is generated by your vehicle’s onboard computer when it detects a system parameter that falls outside of normal operating ranges. These issues can originate in the engine, transmission, emissions system, or other vehicle subsystems.
Clearing a code essentially removes it from the vehicle’s computer memory and turns off the check engine light. However, it’s crucial to understand that clearing a code does not fix the underlying problem. If the root cause of the issue is not addressed, the vehicle will likely re-detect the fault, generate the code again, and reactivate the check engine light. Clearing codes can be useful for verifying whether an issue is recurring, or to reset the system after a repair has been attempted.
The Bluedriver Pro stood out in our tests as one of the easiest OBD2 scanners to use, particularly for beginners; (photo/Eric Phillips)
Understanding Error Codes: A Foundational Breakdown
OBD2 diagnostic trouble codes are standardized five-character codes that provide valuable information about the nature and location of a vehicle problem. Let’s break down the structure of these codes:
-
First Character (Letter): System Identification
- B: Body systems (e.g., interior, comfort, safety features)
- C: Chassis systems (e.g., braking, steering, suspension)
- P: Powertrain systems (e.g., engine, transmission)
- U: Network and data communication systems (undefined system codes)
-
Second Character (Digit): Code Type
- 0: Generic (SAE standardized code common to all manufacturers)
- 1: Enhanced (manufacturer-specific code, providing more detailed information)
-
Third Character (Digit): Subsystem Identification
- 1: Emission management system (air or fuel mixture related)
- 2: Injector circuit (air or fuel delivery)
- 3: Ignition system or engine misfire
- 4: Emission control system (catalytic converter, oxygen sensors, etc.)
- 5: Idle control system and vehicle speed control
- 6: Output circuit and computer system faults
- 7 & 8: Transmission system related codes
- 9 & 0: SAE Reserved for future standardization
-
Fourth and Fifth Characters (Digits): Specific Problem Identification
- These final two characters are variable and pinpoint the specific nature of the fault within the identified system and subsystem. For example, P0113 indicates a specific issue with the Intake Air Temperature Sensor 1 Circuit.
The OBDLINK MX+ consistently scored top marks in our field testing and is considered one of the highest-quality OBD2 scanners available; (photo/Eric Phillips)
Code Reading Interface and Features
While all OBD2 scanners can connect to your vehicle and display these five-character trouble codes, the user experience and features can vary considerably. Some scanners prioritize simplicity, while others offer advanced diagnostic capabilities. For instance, the Motopower MP69033, as a budget-friendly option, focuses on essential code reading and clearing with a straightforward, easy-to-navigate menu.
In contrast, the Bosch 1300 OBD, while highly capable, requires slightly more initial setup as it prompts for vehicle information before reading codes. However, it compensates with advanced features like ABS and airbag code reading.
Bluetooth OBD2 scanners, which utilize smartphone apps, generally offer a more user-friendly and feature-rich interface compared to traditional wired scanners. The app-based interfaces guide users through the connection and code reading process with step-by-step instructions and often present more detailed information in a visually appealing format.
In terms of advanced system code reading, the Ancel BD31 and Bluedriver Pro both read airbag and ABS codes. The Bluedriver Pro extends this further to include TPMS codes. The OBDLINK MX+ and Topdon TopScan OBD2 Bluetooth Scanner stand out by reading ABS, airbag, and TPMS codes, along with enhanced diagnostics and parameters for specific manufacturers like GM and Ford, providing the most comprehensive system coverage.
The Ancel BD31 offers a versatile combination of Bluetooth, wired, and HUD display modes; (photo/Eric Phillips)
Beyond Code Reading: Diagnostic Capabilities
After reading a trouble code, the next step is often to diagnose the underlying issue causing the code. While all scanners provide a basic description associated with the code, some offer more advanced diagnostic assistance. The Motopower MP69033, for example, provides the code and a basic text description. For the P0113 code (Intake Air Temperature Sensor 1 Circuit High), it would display just that basic description.
The Bosch 1300 OBD goes a step further by including an internal library of over 26 million potential fixes for various error codes. Users can input a specific code to access a list of possible solutions directly on the scanner’s screen, which is a significant advantage, especially in areas with limited internet access.
Bluetooth OBD2 scanners leverage internet connectivity to access vast online databases for code diagnostics. When displaying a code, these scanners often provide links to online resources for searching the code and finding potential fixes. However, this functionality relies on cellular or Wi-Fi connectivity, unlike the Bosch 1300 OBD’s offline database. The Ancel BD31 stands out by offering multiple potential causes for each error code, along with a direct link to Google search for further diagnostics, providing comprehensive diagnostic support.
Bluetooth-compatible OBD2 scanners utilize mobile apps for data display and advanced features; (photo/Eric Phillips)
Real-Time Vehicle Monitoring: Live Data
Beyond reading static trouble codes, OBD2 scanners can also provide real-time data from your vehicle’s sensors, offering valuable insights into its operation. Every trouble code is linked to a specific sensor in your vehicle. When a sensor detects a reading outside of its normal range, it triggers a code. OBD2 scanners allow you to view live data streams from these sensors.
Some scanners display data from only one sensor at a time, while others can monitor and display multiple sensor readings simultaneously. Data presentation can also vary, with some scanners presenting data numerically, graphically, or in gauge-style displays that mimic your car’s dashboard.
The OBDLINK MX+ excels in live data monitoring. It offers a customizable heads-up display (HUD) mode with gauge-style readouts for 13 user-selected parameters, and also allows users to monitor any vehicle sensor on a separate data screen. Furthermore, the MX+ logs and archives sensor data over time, along with trip data like GPS location, distance, and fuel economy. This data logging capability can be invaluable for diagnosing intermittent issues or tracking vehicle performance trends.
The Topdon TopScan OBDII Bluetooth Scanner takes live data and control a step further, offering features like adjusting air-fuel mixture and performing cylinder compression testing – features that appeal to performance enthusiasts.
The Bosch 1300 OBD includes a comprehensive set of six adapter cables for wide vehicle compatibility; (photo/Eric Phillips)
Ease of Use: User-Friendliness and Interface
While OBD2 scanners might initially seem like complex professional tools, modern scanners are designed to be user-friendly for automotive enthusiasts of all skill levels. Most scanners include step-by-step instructions and on-screen prompts to guide you through the connection and scanning process.
Bluetooth-compatible scanners generally offer superior ease of use due to their app-based interfaces. These scanners require downloading a companion app to your smartphone or tablet. Once connected via Bluetooth, the app provides a visually rich and intuitive interface for controlling the scanner and accessing diagnostic information, often simplifying complex tasks compared to traditional wired scanners.
The Bluedriver Pro and its app are particularly noted for their user-friendliness. The app features a clear menu system, straightforward instructions for each function, and a readily accessible user manual, making it exceptionally easy to operate, even for first-time users.
OBD2 scanners utilize various display types, from basic monochrome screens to full-color LCDs and smartphone/tablet apps; (photo/Eric Phillips)
Connection Type: Wired vs. Bluetooth OBD2 Scanners
OBD2 scanners connect to your vehicle’s OBD2 port using either a wired connection or a wireless Bluetooth connection. Each type offers distinct advantages and considerations:
Wired OBD2 Scanners
Wired OBD2 scanners are the traditional and more established type. The scanner unit itself contains the processing power, display screen, and control buttons. They connect to the OBD2 port via a cable.
Wired scanners typically don’t require batteries (except for features like the Bosch 1300 OBD’s battery backup) as they are powered by the vehicle’s OBD2 port. Some, like the Bosch 1300 OBD, can also operate offline, retaining features like built-in databases without internet connectivity. However, wired scanners require physical proximity to the OBD2 port during use, often limiting operation to the driver’s seat area due to cable length. They also tend to be bulkier than their Bluetooth counterparts.
Bluetooth OBD2 Scanners
Bluetooth scanners are characterized by their compact size. They plug into the OBD2 port but communicate wirelessly via Bluetooth to a smartphone or tablet. The processing and display functions are handled by a dedicated app installed on your mobile device.
Bluetooth scanners offer the advantage of a larger, higher-resolution display screen (your smartphone or tablet) and generally more intuitive, app-based user interfaces. They are also more portable and take up less storage space. Some Bluetooth scanners can be left plugged into the OBD2 port even when not in use. However, they rely on a charged smartphone or tablet with the app installed for operation. Some features, particularly those requiring online databases or data lookups, may be limited or unavailable without cellular or Wi-Fi connectivity.
We evaluated a wide range of OBD2 scanners to help you select the best tool for your automotive diagnostic needs in 2024; (photo/Eric Phillips)
Price & Value: Choosing an OBD2 Scanner for Your Budget in 2024
The OBD2 scanner market offers options for every budget, from basic code readers to advanced professional-grade tools. Here’s a breakdown of price tiers to help you find the best value for your needs in 2024:
Budget-Friendly OBD2 Scanners (Under $100)
In the budget category (under $100), you’ll find excellent value options like the Motopower MP69033 ($24), Ancel BD31 ($88), and Topdon TopScan OBD2 ($89).
Despite their affordability, the Bluetooth-enabled Ancel BD31 and Topdon TopScan OBD2 offer features that exceed the needs of many DIY users. They provide a compelling balance of functionality and value. For users seeking basic code reading and clearing without advanced features, the Motopower MP69033 is an unbeatable budget choice, offering essential functionality for under $25. It’s our top budget pick for 2024, providing straightforward code reading at an incredibly accessible price.
The Topdon TopScan OBD2 Bluetooth Scanner balances features and affordability in the mid-price range; (photo/Chip Jordan)
Mid-Range OBD2 Scanners ($100 – $200)
Stepping up to the mid-price tier ($100-$200) brings you to feature-rich Bluetooth scanners like the Bluedriver Pro ($100) and OBDLINK MX+ ($140). These scanners offer a significant jump in capabilities and are well-suited for serious DIYers and automotive enthusiasts.
Our top pick in this price range, and our overall top recommendation for 2024, is the OBDLINK MX+. It provides a class-leading combination of comprehensive vehicle data, third-party app compatibility for expanded functionality, and near-professional-grade features at a mid-range price point, representing exceptional value for its capabilities.
Premium OBD2 Scanners (Over $200)
In the premium category (over $200), the Bosch 1300 OBD ($300) stands out. Unlike many Bluetooth scanners, the Bosch 1300 OBD is a wired unit. However, its premium features and OBD1 compatibility make it a compelling choice for users working on a wider range of vehicles, including older models. While the most expensive scanner in our guide, it remains a bargain compared to professional-grade scanners and offers comparable capabilities. Its unique OBD1 support, extensive offline fix database, and battery-powered operation make it a top premium pick for 2024, particularly for those who need to diagnose older vehicles.
The Topdon TopScan OBD2 Bluetooth Scanner app provides a clear and intuitive user experience; (photo/Chip Jordan)
Frequently Asked Questions About OBD2 Scanners
What exactly does an OBD2 scanner do?
OBD stands for On-Board Diagnostics. OBD2 refers to the second generation of this standardized system, mandated for most vehicles. An OBD2 scanner essentially “talks” to your vehicle’s onboard computer system.
This communication allows the scanner to read and clear check engine lights and diagnostic trouble codes. More advanced scanners can also provide diagnostic assistance, suggesting potential causes and fixes for detected codes. Some scanners offer additional features like monitoring driving behavior and displaying real-time vehicle sensor data.
The OBDLINK MX+ app presents live data on a customizable 6-gauge digital display; (photo/Eric Phillips)
Do OBD2 scanners work on all vehicles?
OBD2 became mandatory for all vehicles sold in the United States in 1996. The European Union followed suit in 2001. Therefore, OBD2 scanners should be compatible with all cars manufactured in these regions from those years onward.
As new vehicle models are released, scanner manufacturers continually update their devices to maintain compatibility. However, it may take a few years for full compatibility to be established with the very latest models. Vehicles manufactured in other regions, such as Canada and Japan, may have variations of OBD2 standards. It’s always advisable to verify scanner compatibility with your specific vehicle before purchasing.
Can you control your car through the OBD2 port?
No, you cannot directly drive or steer your vehicle through the OBD2 port. The OBD2 port is primarily designed for diagnostic communication.
However, OBD2 scanners can control various vehicle systems indirectly. They can be used to clear check engine lights, reset airbag and ABS systems after repairs, and manage maintenance lights like oil change reminders. Some advanced scanners offer more control over specific vehicle parameters for diagnostic or performance tuning purposes, but not direct control over driving functions.
Bluetooth OBD2 scanners offer a user-friendly and feature-rich experience through smartphone apps; (photo/Eric Phillips)
What types of problems can OBD2 scanners detect?
OBD2 scanners are designed to detect a standardized set of diagnostic trouble codes related to various vehicle systems. The check engine light typically illuminates when a code is generated.
OBD2 scanners can detect issues within the engine, transmission, emissions system, electrical systems, airbag systems, braking systems, and more. The five-character diagnostic codes provide both generic and manufacturer-specific information about the nature and location of the problem.
The Ancel BD31 app impressed us by providing multiple potential fixes for each detected error code; (photo/Eric Phillips)
What is the difference between OBD1 and OBD2?
Before the standardization of OBD2, some vehicle manufacturers used earlier, less standardized OBD1 systems. OBD1 systems were used in some Ford and GM vehicles from 1984-1995, and Chrysler and Toyota vehicles from 1989-1995. OBD1 systems were generally less comprehensive and less standardized in terms of diagnostic information compared to OBD2.
OBD2 brought standardization to diagnostic trouble codes across different manufacturers. In OBD1 systems, the same code could potentially indicate different issues depending on the manufacturer. The Bosch 1300 OBD is unique in our guide as the only scanner capable of reading both OBD1 and OBD2 codes, making it versatile for diagnosing a wider range of vehicles, including older models.
DTC stands for Diagnostic Trouble Code, the core output of an OBD2 scanner; (photo/Eric Phillips)
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