Is your car trying to tell you something you don’t understand? Like us, you might find your vehicle speaks a different language sometimes. That’s why keeping an OBD2 scanner handy is essential – it’s your automotive Rosetta Stone for deciphering those mysterious engine sputters, strange noises, or the dreaded check engine light.
An OBD2 scanner, also known as a code reader, is your direct line of communication with your car’s computer. These clever tools empower you to clear trouble codes, understand why that check engine light is on, and keep a close eye on your vehicle’s overall health and performance data.
While OBD2 scanners offer a broadly universal service across vehicles, their designs and capabilities vary considerably. Different scanners cater to specific car makes and models, and some advanced code readers not only identify the problem but also suggest potential fixes and provide a wealth of additional data about your car’s operation. At the high-performance end, you have tools like the Bosch 1300 OBD, capable of reading both older OBD1 and modern OBD2 codes. On the more compact and user-friendly side, scanners such as the OBDLINK MX+ excel at providing clear and detailed diagnoses focused on OBD2 standards.
To help you navigate the features and variations in OBD2 scanners, we’ve put together a comprehensive Buyer’s Guide (jump to the guide). For a quick overview of pricing, see our Price & Value breakdown (at price). Still unsure which scanner is right for you? Our Comparison Chart (chart) provides a side-by-side look at our top recommendations for 2024. Alternatively, keep scrolling to explore all our top picks in detail.
Editor’s Update: Our guide to the best OBD2 scanners was last updated on November 1, 2024, featuring the Topdon TopScan OBD2 Bluetooth Scanner as a highlighted recommendation.
Top OBD2 Scanner Picks for 2024
Best Overall OBD2 Scanner: OBDLINK MX+
Key Features:
- Connection: Bluetooth (via app)
- Data Logging: Trip and vehicle stats for every drive
- Solution Identification: Yes
- Live Data: Yes, 6-gauge digital display via app
- Display: Phone or tablet
- Vehicle Compatibility: 1996 and newer (US & international)
Pros:
- Enhanced data for Ford & GM vehicles (e.g., cooled/heated seats)
- Battery drain & overvoltage protection
- iOS, Android, Windows, & 3rd-party app compatible
Cons:
- Limited compatibility with 2022+ vehicles
The OBDLINK MX+ ($140) stands out as a premium OBD2 scanner, delivering an unparalleled depth of information directly from your vehicle’s OBD2 port. Its compact, plug-and-forget design allows for continuous connection, thanks to built-in battery drain and overvoltage protection. Furthermore, it boasts hacker-proof security features to prevent unauthorized access.
In our tests, the MX+ consistently provided the most comprehensive vehicle data. Diagnostic codes were presented with exceptional clarity, and the device generated detailed trip reports filled with extensive parameters, including fuel consumption – offering richer metrics than any other scanner we evaluated. For many recent models from General Motors, Ford, Mazda, Nissan, and Toyota, including our test vehicles, the MX+ could access and clear codes from advanced systems like airbags, ABS, and TPMS.
The MX+’s compatibility with numerous third-party apps is a significant advantage. It works with hundreds of apps that unlock enhanced vehicle performance, allow setting adjustments, remote engine start (on compatible vehicles), and even connect to electric vehicles for advanced diagnostics. Beyond detailed logs and graphs, it features a heads-up display mode with 13 customizable gauges, providing real-time data monitoring directly on your phone or tablet while driving. For performance enthusiasts, a dedicated mode measures metrics like 0-60 mph time and quarter-mile times. While compatibility is currently limited for vehicles from 2022 onwards, OBDLink is actively expanding support through ongoing software updates.
Ultimately, despite being the most expensive Bluetooth scanner we tested, the OBDLINK MX+ justified its price by providing the most extensive vehicle information, a user-friendly interface for constant monitoring, and a preferred design for live data analysis. It’s the ideal choice for users seeking maximum insight from their OBD2 scanner.
Best Budget OBD2 Scanner: Motopower MP69033
Motopower MP69033
$25 at Amazon
Key Features:
- Connection: Wired
- Data Logging: No
- Solution Identification: No
- Live Data: Limited
- Display: 2.8″ B&W screen
- Vehicle Compatibility: Most US, EU, & Canada models
Pros:
- Highly affordable
- Ergonomic large buttons
Cons:
- Basic feature set
- Simple code reader
- Screen clarity is not optimal
If you’re in the market for a no-frills, budget-friendly OBD2 scanner, the Motopower MP69033 ($24) is a reliable option that delivers essential functionality without breaking the bank. This wired scanner quickly connects to your vehicle to read and clear diagnostic trouble codes. It features user-friendly large buttons and a straightforward menu for ease of operation.
The compact, plug-and-play MP69033 has a 2.8-inch black and white LCD screen and a 2.5-foot cable, providing ample reach to use from the driver’s seat. Powered directly by your vehicle when connected, it eliminates the need for batteries or charging.
Supporting six languages and compatible with a wide range of modern vehicles, the MP69033 covers the basics effectively. However, it does have limitations. Live data display is available but is basic, showing only one parameter at a time on a screen that can be challenging to read. It lacks advanced features like enhanced diagnostics or comprehensive data logging found in more advanced scanners.
For drivers who need a simple, analog scanner for basic code reading and clearing, the Motopower MP69033 is an excellent choice. It’s a testament that you don’t always need the latest technology to get the job done.
Easiest-to-Use OBD2 Scanner: Bluedriver Pro
Key Features:
- Connection: Bluetooth
- Data Logging: Freeze frame
- Solution Identification: Yes, multiple fixes
- Live Data: Yes
- Display: Phone or tablet
- Vehicle Compatibility: Most US, EU, & Canada
Pros:
- Intuitive, user-friendly app
- Comprehensive diagnostic reports with codes
- ABS, TPMS, & Airbag codes included
Cons:
- Live data monitoring can be cumbersome while driving
- User manual requires internet access
- No 3rd-party app compatibility
If you’re new to OBD2 scanners and prefer a straightforward, polished user experience, the Bluedriver Pro ($100) is an excellent choice. This Bluetooth-powered scanner is designed with a streamlined, user-friendly app interface. It provides step-by-step guidance, making it simple to read, understand, and clear check engine lights.
When reading codes via the Bluedriver app, a complete repair report is generated for each code, including the VIN, code details, frequency, and a list of potential solutions with parts links. You can even record your own repair notes within the app and easily share or save reports as PDFs. Importantly, it also reads codes for ABS, airbag, and TPMS systems.
The app includes instructional prompts and a comprehensive user manual, accessible through YouTube videos (requiring internet access). Live data is less intuitive to monitor compared to the gauge-style display of the MX+, and the data refresh rate is slower. Bluedriver is also limited to its proprietary app and doesn’t support third-party apps.
Despite these limitations, the Bluedriver Pro’s smooth interface and Bluetooth app connectivity make it highly appealing, especially for beginners. Its ease of use in interpreting and clearing codes, finding solutions, and ordering parts makes it a top pick for novice users.
Best Combo OBD1 and OBD2 Scanner: Bosch 1300 OBD
Bosch 1300 OBD
Check price at Bosch
Key Features:
- Connection: Wired
- Data Logging: Yes
- Solution Identification: Yes, 26M+ fixes database
- Live Data: Yes
- Display: 3.5” color display
- Vehicle Compatibility: All US OBD1 & OBD2 vehicles
Pros:
- OBD1 & OBD2 compatibility
- ABS & SRS/Airbag codes
- Battery-powered for dead vehicles
- 26 million experience-based fixes
Cons:
- Highest price point
- Bulky with extra cables
- No fuel mileage data
Bosch, a leader in automotive diagnostics, offers the Bosch 1300 OBD ($300), a powerful tool for comprehensive vehicle communication. Unique in its class, it provides both enhanced OBD2 and legacy OBD1 compatibility.
This wired scanner comes with six connectors, ensuring broad compatibility, including cables for 1984-1995 GM & Ford, 1989-1995 Chrysler & Toyota, and all OBD2 vehicles. It can be powered by a 9-volt car outlet or its internal battery, allowing diagnostics even on vehicles with dead batteries. The 1300 series reads ABS and airbag codes in addition to standard codes.
Its standout feature, besides OBD1 support, is the Code Connect database, offering over 26 million verified fixes for check engine light codes, accessible offline. While a robust diagnostic tool, it lacks fuel data reading, which is a notable omission at its price. The device is also physically large with numerous cables, making it less portable. However, for users needing both OBD1 and OBD2 compatibility and a top-tier code reader, the Bosch 1300 OBD is the definitive choice.
Best Bluetooth and Wired OBD2 Scanner: Ancel BD31
Key Features:
- Connection: Wired & Bluetooth
- Data Logging: Freeze frame
- Solution Identification: Yes
- Live Data: Yes
- Display: Phone/tablet & 1.5×2” handheld screen
- Vehicle Compatibility: All OBD2, EU, & Canada
Pros:
- Multiple potential fixes per code
- Seamless Bluetooth & wired switching
- Handheld HUD with mounts
Cons:
- Small screen can be difficult to read
- Limited wired connection data vs. Bluetooth app
- No ABS/Airbag code clearing
The Ancel BD31 ($88) is unique as a dual-mode OBD2 scanner, offering both wired and Bluetooth connectivity, usable simultaneously in three modes: wired, Bluetooth, and HUD.
While its Bluetooth app menu isn’t the most intuitive, it effectively reads codes. The engine code diagnostics are a strong point. For our P0113 code test, it provided six potential fixes, more than any other scanner tested. It also offers a quick link to Google for code-specific vehicle diagnosis when connected to the internet.
The app supports live data monitoring with three customizable gauges for a driving HUD. The wired mode uses a small screen and four buttons for basic code reading without a phone or tablet. In HUD mode, the screen displays set parameters like boost or air-fuel ratio, with magnet and vent mounts included for easy placement.
While the three modes are a great feature, the built-in screen is small and not very readable, and it does not clear ABS or airbag codes. However, for users seeking versatile connectivity, multiple functions, and detailed diagnostic data, the BD31 is a valuable option.
Top Pick for Compact Bluetooth Scanner: Topdon TopScan OBD2 Bluetooth Scanner
Topdon TopScan OBD2 Bluetooth Scanner
$80 at Amazon
Key Features:
- Connection: Wireless Bluetooth
- Data Logging: Freeze Frame
- Solution Identification: Yes
- Live Data: Yes
- Display: Phone, tablet
- Vehicle Compatibility: 98% of 1996-2023 vehicles
Pros:
- Compact design
- Bluetooth connectivity
- Live data capabilities
- ABS & Airbag codes
Cons:
- Vehicle compatibility up to 2023 models only (updates available)
The Topdon TopScan OBD2 Bluetooth Scanner ($89) offers significant functionality in a compact, budget-friendly package. This wireless Bluetooth unit is compatible with 98% of vehicles from 1996-2023.
Pairing with the app was straightforward, and the app itself is user-friendly and easy to navigate. It automatically recognizes your vehicle via VIN scan or manual input. In our testing on a 2008 Ford F250, it accurately identified past, unresolved codes and cleared them easily. While it didn’t detect an active TPMS sensor fault in our test, it is designed to read TPMS codes.
The TopScan offers detailed live data, including air-fuel mixture per cylinder and compression testing. While not a professional-grade device, it provides extensive features for vehicle diagnostics and maintenance. Its compact wireless design, broad vehicle system coverage, and range of service functions make the Topdon TopScan a highly viable and affordable addition to any toolbox.
The Bosch 1300 OBD is compatible with both OBD1 and OBD2 vehicles. (photo/Eric Phillips)
OBD2 Scanners Comparison Chart
Scroll right to see all columns: Price, Connection, Data Log, Identifies Solution, Live Data, 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, via app | 1996+ US & international |
| Motopower MP69033 | $24 | Wired | No | No | Limited | Most US, EU, Canada |
| Bluedriver Pro | $100 | Bluetooth | Freeze frame | Yes, multiple fixes | Yes | Most US, EU, Canada |
| Bosch 1300 OBD | $300 | Wired | Yes | Yes, 26M+ fixes | Yes | All US OBD1 & OBD2 |
| Ancel BD31 | $88 | Wired & Bluetooth | Freeze frame | Yes | Yes | All OBD2, EU, Canada |
We tested a range of OBD2 scanners to identify the best options for various user needs. (photo/Eric Phillips)
How We Tested OBD2 Scanners
Our Expert Testers
Our primary tester, Eric Phillips, has a decade of experience as an outdoor professional and a lifelong passion for automotive mechanics. From building cars to modifying trucks, Eric has always relied on code readers.
Chip Jordan, tester and photographer, is a seasoned outdoorsman and gear enthusiast with extensive experience working on engines and vehicles. He values both classic vehicles and modern automotive technology, ensuring he has the right diagnostic tools for any car, old or new.
Our Testing Locations
Testing was conducted across diverse terrains, from Southwest Colorado (Phillips’ base) to New Mexico (Jordan’s location) and during road trips across the American West and beyond.
Testing the Topdon TopScan OBD2 Bluetooth Scanner. (photo/Chip Jordan)
Our Testing Methodology
Our testing process involved two core methods. First, we used each scanner to read, diagnose, and clear diagnostic trouble codes. Second, we evaluated each scanner’s capacity to provide comprehensive vehicle information. On our 2014 Ford F-150 Raptor, we simulated a check engine light by disconnecting the MAF sensor, generating P0103 and P0113 codes. We also tested on a 2008 Ford F-250 with an existing TPMS code and historical fault codes.
For each scanner, we compared code reading and clearing speed and the depth of code information provided. We assessed the diagnostic assistance and repair suggestions offered. Functionally, all scanners successfully read and cleared the generated codes.
We further assessed each scanner’s information accessibility, including ABS and airbag system checks. We evaluated live data monitoring capabilities, focusing on the number of parameters viewable simultaneously and ease of data interpretation while driving (with safety in mind, always pull over for detailed analysis). We explored menu navigation and overall functionality to identify scanners providing the most comprehensive user information.
Our evaluations, combined with real-world experience, determined the top OBD2 scanners based on criteria including vehicle compatibility, live data capabilities, diagnostics, connection type, ease of use, vehicle information, functions, data logs, reports, features, and customer support. We also considered market popularity, awards, versatility, and affordability to recommend scanners for diverse drivers, vehicles, needs, and budgets.
Practice using your OBD2 scanner before encountering vehicle issues. (photo/Eric Phillips)
Buyer’s Guide: Choosing the Right OBD2 Scanner
Read & Clear Codes: The Foundation
The primary function of any OBD2 scanner is to read and clear trouble codes that trigger the check engine light. These codes are generated by the vehicle’s computer when it detects a system parameter outside of normal operating ranges in the engine, transmission, emissions, or other systems.
Clearing a code removes it from the system and turns off the check engine light. If the underlying issue is not resolved, the code will reappear, and the light will illuminate again. Clearing codes is useful for verifying if a problem is recurring or after attempting a repair.
The Bluedriver Pro is exceptionally user-friendly, ideal for first-time users. (photo/Eric Phillips)
Understanding Error Codes: A Quick Guide
OBD2 trouble codes are five characters long, with a structured format:
-
First Character (System):
- B: Body
- C: Chassis
- P: Powertrain
- U: Network/Undefined
-
Second Character (Code Type):
- 0: Generic (SAE standard)
- 1: Manufacturer-Specific (Enhanced)
-
Third Character (Subsystem):
- 1: Fuel/Air Metering
- 2: Fuel/Air Metering (Injector Circuit)
- 3: Ignition System or Misfire
- 4: Auxiliary Emission Controls
- 5: Vehicle Speed Controls & Idle Control System
- 6: Computer Output Circuit
- 7: Transmission
- 8: Transmission
- 9: Reserved (SAE)
- 0: Reserved (SAE)
-
Fourth & Fifth Characters: Specific problem details.
The **OBDLINK MX+ is a top-tier scanner with excellent performance in our tests. (photo/Eric Phillips)
Code Reading Interface: Wired vs. Bluetooth
While all scanners in our guide read and display the basic five-character trouble codes, the user experience varies. The Motopower MP69033, with its limited features, offers a simple, self-explanatory menu for basic code reading and clearing.
In contrast, the Bosch 1300 OBD takes slightly longer to read codes due to initial prompts but offers broader code coverage, including airbag and ABS codes.
Bluetooth scanners, utilizing phone apps, offer quicker and more informative user interfaces. Apps guide you through connection and code reading step-by-step, presenting data more vividly than traditional wired scanners. For enhanced system coverage, the Ancel BD31 reads ABS and airbag codes. The Bluedriver Pro adds TPMS codes to its capabilities. The **OBDLINK MX+ and **Topdon TopScan OBD2 Bluetooth Scanner** lead in system access, reading ABS, airbag, TPMS, and manufacturer-specific codes for brands like GM and Ford.
The Ancel BD31 offers Bluetooth, wired, and HUD modes. (photo/Eric Phillips)
Diagnostics: Beyond Code Reading
After reading a trouble code, the next crucial step is diagnostics – understanding the root cause. While all scanners provide a basic code description (e.g., P0113: Intake Air Temperature Sensor 1 Circuit High), some offer more advanced diagnostic support.
The Motopower MP69033 provides only the code and its basic description. The Bosch 1300 OBD enhances this with an internal database of over 26 million potential fixes, searchable by code.
Bluetooth scanners leverage internet connectivity for expanded diagnostic information. They often include links to online resources for code-specific troubleshooting and repair guidance. The Ancel BD31 excels here, suggesting up to six possible causes per code and providing a direct Google search link for further investigation. However, internet-based diagnostics require cellular or Wi-Fi access, unlike the offline database of the Bosch 1300 OBD.
Bluetooth OBD2 scanners provide data through user-friendly apps. (photo/Eric Phillips)
Live Data & Real-Time Monitoring
OBD2 scanners are not just for reading codes; they also provide real-time sensor data from your vehicle. Trouble codes are triggered when a sensor detects readings outside normal parameters. Scanners allow you to monitor live data from these and other vehicle sensors.
Some scanners display only one sensor data stream at a time, while others can monitor multiple sensors simultaneously, presented numerically or graphically. Some even offer dashboard-style displays for easy real-time viewing.
The **OBDLINK MX+ is exceptional in live data monitoring. It features a dashboard-style heads-up display with 13 customizable gauges and allows monitoring of all vehicle sensors. It also logs and archives sensor data, including trip information like GPS, distance, and fuel economy, useful for analyzing sensor behavior over time.
The Topdon TopScan OBDII Bluetooth Scanner offers advanced live data functions, including adjusting air-fuel mixture and performing cylinder compression tests – features appealing to performance enthusiasts.
The Bosch 1300 OBD includes a comprehensive set of six connectors. (photo/Eric Phillips)
Ease of Use: For Every User Level
While OBD2 scanners might initially seem complex, modern designs are user-friendly for all automotive skill levels. Most scanners offer step-by-step instructions for connection and scanning.
Bluetooth scanners excel in ease of use. Using a dedicated app on a smartphone or tablet provides a more intuitive and visually rich interface compared to traditional wired scanners. The app guides users through every step of the diagnostic process.
The Bluedriver Pro and its app are particularly user-friendly, with simple menus and clear instructions for code reading and clearing. The app’s readily accessible user manual further enhances usability.
OBD2 scanners utilize various display interfaces. (photo/Eric Phillips)
Connection Types: Wired vs. Bluetooth
OBD2 scanners connect to a vehicle’s OBD2 port via either a wired cable or Bluetooth.
Wired OBD2 Scanners
Wired scanners are the traditional design. The scanner unit itself contains the processing power, display screen, and control buttons. They are self-contained, require no batteries (powered by the vehicle), and can operate offline, like the Bosch 1300 OBD with its offline fix database. However, their wired connection limits mobility during use, typically requiring the user to remain in the driver’s seat, and they are bulkier than Bluetooth models.
Bluetooth OBD2 Scanners
Bluetooth scanners are compact and wireless. They plug into the OBD2 port and communicate with a smartphone or tablet via Bluetooth. The app on the mobile device acts as the scanner’s interface, providing a larger, clearer display and often a more intuitive user experience. Bluetooth scanners are more portable and can even be left plugged in when not in use. However, they require a charged mobile device with the app installed and may have limited functionality without cellular or Wi-Fi connectivity for certain features.
We tested a variety of OBD2 scanners to help you choose the best one. (photo/Eric Phillips)
Price & Value: OBD2 Scanners for Every Budget
Even budget OBD2 scanners offer valuable diagnostic capabilities, while premium models rival professional-grade tools. This price guide helps you find the best scanner for your needs and budget.
Budget-Friendly Options
Under $100, the Motopower MP69033 ($24), Ancel BD31 ($88), and **TOPDON TopScan OBD2** ($89) offer excellent value. The Bluetooth-enabled Ancel and Topdon models offer features exceeding basic DIY needs, providing significant value. For basic code reading and clearing, the Motopower MP69033 is an unbeatable budget choice.
The Topdon TopScan OBD2 Bluetooth Scanner offers mid-tier pricing. (photo/Chip Jordan)
Mid-Range Scanners
The Bluedriver Pro ($100) and OBDLINK MX+ ($140) represent the mid-tier, offering a rich feature set suitable for serious car enthusiasts. The OBDLINK MX+, our top overall pick, provides extensive metrics, third-party app compatibility, and near-professional capabilities at a mid-range price.
Premium Scanners
At the premium level, the Bosch 1300 OBD ($300) stands out. While wired, it rivals professional scanners and is the only model in our guide supporting both OBD1 and OBD2. Its extensive fix database and standalone power make it a top premium choice for comprehensive diagnostics, especially for users working with older vehicles.
The Topdon TopScan OBD2 Bluetooth scanner app features a clear, readable display. (photo/Chip Jordan)
Frequently Asked Questions About OBD2 Scanners
What is the function of an OBD2 scanner?
OBD2 scanners communicate with your vehicle’s onboard computer system, accessing diagnostic information based on a standardized protocol. They read and clear check engine lights and diagnostic trouble codes. Advanced scanners offer diagnostics, suggesting causes and fixes, and can monitor driving behavior and real-time vehicle data.
The **OBDLINK MX+ displays data on a 6-gauge digital interface via its app. (photo/Eric Phillips)
Are OBD2 scanners universally compatible with all vehicles?
OBD2 became mandatory in the US in 1996 and in the EU in 2001. Scanners should be compatible with vehicles manufactured in or after these years. Scanner compatibility is continuously updated for new models, but updates may lag a few years. Vehicles in Canada and Japan may have variations of OBD2, so verifying scanner compatibility is recommended before purchase.
Can an OBD2 scanner control vehicle operation?
OBD2 scanners cannot control driving or steering. However, they can control and interact with various vehicle systems, including check engine lights, airbags, ABS, and maintenance lights, allowing for system resets and diagnostics.
Bluetooth OBD2 scanners offer a user-friendly and high-quality experience via smartphone apps. (photo/Eric Phillips)
What types of problems can OBD2 scanners identify?
OBD2 scanners detect standardized diagnostic trouble codes and check engine lights. These codes, typically five characters, can be generic or manufacturer-specific, indicating problems in engine, transmission, emissions, electronics, airbags, brakes, and other vehicle systems.
The Ancel BD31 provides multiple potential fixes for each error code. (photo/Eric Phillips)
What are the key differences between OBD1 and OBD2?
OBD1 was a pre-standardized system used by some manufacturers before OBD2. OBD2 standardized error codes across manufacturers, whereas OBD1 codes could vary in meaning between brands. OBD2 offers more comprehensive diagnostic information. The Bosch 1300 OBD is unique in supporting both OBD1 and OBD2 diagnostics.
DTC stands for Diagnostic Trouble Code in OBD2 scanner readings. (photo/Eric Phillips)
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