Does your car speak a different language? Ours does, too. Thats why we always keep an OBD2 scanner in the glovebox to help us bridge the gap if the engine starts to sputter, new noises pop up, or the check engine light pops on.

　　Communicating with your vehicles computer is the job of an OBD2 scanner, also known as a code reader. These savvy auto tools can clear the cars trouble codes, check engine lights, and monitor the automobiles health and information.

　　While most of these computers offer a fairly universal service, the designs also differ. Various types of scanners serve different makes and models, and some code readers provide fixes for the issue, as well as a plethora of additional data about how your vehicle is used.

　　To learn more about the features of OBD2 scanners and a more in-depth analysis of how these straps can vary, be sure to check out our comprehensive buying guide, FAQ, and comparison chart below.

　　Otherwise, scroll through to see all of our recommended buys for 2024.

　　The Best OBD2 Scanner of 2024 Best Overall OBD2 Scanner:OBDLINK MX+ Best Budget OBD2 Scanner:Motopower MP69033 Easiest to Use OBD2 Scanner:Bluedriver Pro Best Combo OBD1 and OBD2 Scanner:Bosch 1300 OBD Best Bluetooth and Wired OBD2 Scanner: Ancel BD31 Best Overall OBD2 Scanner OBDLINK MX+ Specs Connection Bluetooth (via an app) Data Log Trip stats and vehicle stats for every drive Identifies Solution Yes Live Data Yes, viewable on 6-gauge digital display via app Display Phone or tablet Vehicle Compatibility All 1996 and newer cars in U.S. and international variants

　　Pros Offers advanced data for Ford and General Motors vehicles (like cooled/heated seats) Battery drain and overvoltage protection Compatible with IOS, Android, Windows, and third-party apps Cons Limited compatibility with new vehicles 2022 or newer Eric Phillips The OBDLINK MX+ ($140) is a top-of-the-line tool for getting all the information possible from your vehicles OBD2 port. In a compact design, the scanner is an easy-to-use plug-and-forget system that you can leave in your OBD2 port 24/7, thanks to the battery drain and overvoltage protection. Additionally, this piece claims to be hacker-proof using a unique security mechanism that prevents unauthorized access. 

　　Our testers found the MX+ to deliver the most information for our vehicle. While diagnosing, the codes were crystal to read and clear. The device also generated detailed trip reports and logs that were filled with hundreds of parameters — like fuel consumption — ultimately providing more metrics than any other scanner we tested. For many late-model General Motors, Ford, Mazda, Nissan, and Toyota vehicles, including our test rigs, we were able to read and clear the codes of advanced automotive networks like airbags, anti-lock braking systems, tire-pressure monitoring systems, and more.

　　What also set the MX+ apart was its ability to connect with third-party apps. This computer is compatible with hundreds of apps that unlock enhanced performance, let you change vehicle settings, remote start the engine on select vehicles, and even connect with electric vehicles for diagnostics. On top of the enhanced log data and graphs, there is an additional heads-up display mode that offers 13 different preset parameters, which are readable in straightforward gauges on your phone or tablet screen. This component expands the data you can live monitor while driving. 

　　For off-street driving, there is even a performance mode that clocks variables like 0 to 60 miles per hour (performance), ¼ mile time, ½ mile time, and more. For modern vehicles, 2022 models and newer, there is much less compatibility with this scanner. But new vehicles are being added as fast as possible, and software updates are free. Overall, while this was the priciest Bluetooth scanner we tested, it delivered the most information about our vehicle. The interface was the easiest to keep plugged in for frequent use, and the design was our favorite for monitoring live data. For anyone who wants to get the most possible from their OBD2 scanner, the OBDLINK MX+ is the one for you. 

　　$140 at AmazonCheck Price at OBDLink Best Budget OBD2 Scanner Motopower MP69033 Specs Connection Wired Data Log No Identifies Solution No Live Data Some Display 2.8″ non-color screen Vehicle Compatibility Most U.S., E.U., and Canada models

　　Pros Priced affordably Large buttons for ergonomic use Cons Not as feature-rich Basic code reader Screen isn’t the most clarion Eric Phillips Looking for a basic reader at a bargain? The Motopower MP69033 ($24) is a friendly-priced scanner that wont let you down. This wired scanner easily connects to your vehicle to read and clear codes. It features large buttons for ease of use and a simple menu of functions. 

　　This plug-and-play OBD2 scanner is relatively small with a 2.8-inch LCD screen thats in black and white. Its 2.5-foot wired cord lets you plug in under the dash and work from the front seat with plenty of slack. It doesnt need batteries or to be charged, because its powered by your vehicle when plugged in. 

　　Available in six languages and compatible with most modern cars, this design matches many models. What are you giving up? While it does provide live data, the screen can be hard to read, and it only offers one parameter at a time. It doesnt have some of the features like enhanced diagnostics or full data logs that other scanners have. 

　　But the snazziest technology isnt for every driver, nor does it always fit the bill. If you want an analog scanner that just works for basic code reading and clearing, look no further than the Motopower MP69033.

　　$20 at Amazon Easiest to Use OBD2 Scanner Bluedriver Pro Specs Connection Bluetooth Data Log Freeze frame Identifies Solution Yes, multiple fixes Live Data Yes Display Phone or tablet Vehicle Compatibility Most U.S., E.U., and Canada

　　Pros Easy-to-use app Comprehensive diagnostic reports with code Includes codes for airbag, tire-pressure monitoring system (TPMS), and anti-lock braking system (ABS) Cons Live data can be hard to monitor while driving and confusing User manual needs cell data or WiFi Not compatible with other apps Eric Phillips If youre new to the scene of OBD2 scanners, you might appreciate a more elementary and manicured experience. The Bluedriver Pro ($100) is a Bluetooth-powered OBD2 Scanner with a streamlined, user-friendly menu. The device also offers step-by-step instructions, so you can read, fix, and clear the check engine lights with ease. 

　　When we read codes with the app, a full repair report was generated for each code. Those exams included the VIN number, the code and its frequency of occurrence, a list of solutions with links to parts, and the ability to record your own fix in the app. You could conveniently share, save, and send this report as a PDF. Additionally, the design identifies ABS, airbag, and TPMS codes.

　　There are both instructional prompts and a full user manual within the corresponding app. But the user manual is provided via several YouTube videos, so youll need cell service or WiFi to watch them. The live data is much harder to read than the gauges we loved on the MX+, and the frequency rate for collecting data was much slower. The Bluedriver is also not compatible with third-party apps that need a direct OBD2 connection. 

　　Regardless, we were still impressed by the smooth interface and the Bluetooth-app connectivity. Even novice scanners will be able to interpret and eliminate codes, discover solutions, and order parts with the Bluedriver Pro.

　　$100 at AmazonCheck Price at Walmart Best Combo OBD1 and OBD2 Scanner Bosch 1300 OBD Specs Connection Wired Data Log Yes Identifies Solution Yes, 26 million fixes in database Live Data Yes Display 3.5” color display Vehicle Compatibility All U.S. OBD1 and OBD2 vehicles

　　Pros OBD1 and OBD2 compatibility ABS and supplemental restraint system (SRS)/airbag codes Battery-powered for use when vehicle is dead 26 million experience-based fixes uploaded Cons Priciest option tested Extra cables occupy excess room No fuel mileage data Eric Phillips Bosch is known for its automotive diagnostic tools from professionals to hobbyists, and the Bosch 1300 OBD ($300) is a true powerhouse when it comes to communicating with your vehicle. Not only does it feature enhanced OBD2 compatibility, but it is the only scanner that offers OBD1 compatibility to boot. Its decked out with a wired design that comes with six different connectors, so it can work with a full range of cars. That load includes cables for 1984-1995 GM and Ford vehicles, as well as 1989-1995 Chrysler and Toyota vehicles, plus all versions of OBD2-equipped vehicles. Theres no dearth of options.

　　Additionally, the tools battery can be charged with a 9-volt car outlet. While it doesnt need a battery and can be powered by the vehicle, it can diagnose a dead vehicle with a fully charged battery. The 1300 series is capable of detecting and reading ABS and airbag codes on top of normal codes. What also pushes this reader beyond competition — besides the OBD1 compatibility — is the code connect. That database offers more than 26 million verified fixes for check engine light codes. That directory is installed in the device and fully accessible without cell or WiFi connection. 

　　While this is a very powerful automotive diagnostic tool, it does not have the ability to read fuel data, which, at the expensive price point, we felt should be included. The device is physically very large, and the extra cables arent compact. But if youre looking for a top-of-the-queue code reader and want it to work on both OBD1 and OBD2 vehicles, then the Bosch 1300 OBD is by far the best.

　　$300 at Amazon Best Bluetooth and Wired OBD2 Scanner Ancel BD31 Specs Connection Wired and bluetooth Data Log Freeze frame Identifies Solution Yes Live Data Yes Display Phone, tablet, and handheld 1.5 x 2” screen Vehicle Compatibility All OBD2 vehicles plus E.U. and Canada

　　Pros Provides multiple probable fixes for every check engine code Switches between bluetooth and wired handheld connection with ease Handheld can be used as an additional heads-up display (HUD) with heater and magnet mount Cons Screen can be hard to read Less information is displayed via wired connection versus bluetooth app Won’t clear ABS or airbag codes Eric Phillips As both a wired and Bluetooth scanner that can be utilized simultaneously, the Ancel BD31 ($88) is a rather unique design. In fact, it actually has three modes: wired, Bluetooth, and heads-up display (HUD).

　　When operated as a Bluetooth scanner, we found that the Ancel didnt have the easiest menu to navigate. Still, we were able to read codes via our phone app when the scanner was plugged in. The diagnostics for the engine codes were where the Ancel really shined. For our P0113 test code, the generated report gave us six different potential fixes, which was by far the greatest quantity compared to other scanners. Additionally, when in cell service or connected to WiFi, theres a quick link for you to Google the code for your specific vehicle, which helps to diagnose why that code was thrown. 

　　The phone app offered live monitoring and displayed three different gauges that could be used as a HUD when driving. The wired side of the Ancel offers a tiny screen and only four buttons, but we were able to read codes without the use of a phone or tablet. The third mode — when the Ancel is plugged in — converts the screen into a secondary HUD where you can view set parameters like boost or air-fuel ratio. It comes with both a magnet and a vent mount, so that you can easily mount the screen where you can see it while driving. 

　　While we loved the ability to have three different modes, the built-in screen was petite and hard to read. The scanner also cant pinpoint or wipe the codes for ABS or airbags. But if youre looking for a scanner with multiple functions, various ways to connect a scanner to your rig, and high-quality diagnostic data, the Ancel BD31 is a solid choice for the bill.

　　$78 at AmazonCheck Price at Walmart

　　The Bosch 1300 OBD is both OBD1 and OBD2 compatible; (photo/Eric Phillips) OBD2 Scanner Comparison Chart Scroll right to view all of the columns: Price, Connection, Data Log, Identifies Solution, Live Data, and Vehicle Compatibility.

　　We tested a variety of OBD2 scanners to narrow down the best options for a range of users; (photo/Eric Phillips) How We Tested OBD2 Scanners Our team tested OBD2 scanners in two primary ways. First, we used the code detectors to read, diagnose, and clear codes. Secondly, we used the scanners to get as much information as possible about our test vehicle. On our 2014 Ford F-150 Raptor test vehicle, we unplugged the MAF (mass air flow) sensor to generate a check engine light and the P0103 and P0113 codes. From one design to the next, we compared how fast it was to read and clear the code, as well as how much information about the code was recorded. We compared what diagnostics, or fixes, were available alongside the code. At a foundational level and functionality, each OBD2 scanner we tested was able to read and clear both codes.

　　Furthermore, our test team looked at all of the information that was available within each scanner. At a basic level, could we check ABS and airbag systems? How much live data could we monitor at one time, and how easy was it to glimpse the data while driving? (We absolutely recommend that you pull over to read in-depth information like you should for text messages — we simply mean, do you have the ability to scan data much like you would glance at your speedometer or fuel tank gauge.) Additionally, we took a deep dive into the menus and functionalities of each scanner, making sure to see which one could provide our readers with the most information possible. 

　　Our lead tester, Eric Phillips, has been an outdoor professional for the last 10 years along with being a hobby automotive enthusiast. From growing up working on and building cars to continuing to build trucks in his free time, Phillips has always had a code reader in his glove box and wasnt scared to use it. 

　　Throughout our field tests and personal experience, we determined the top OBD2 scanners based on a variety of metrics including vehicle compatibility, live data, diagnostics, connection point, ease of use, vehicle information, functions, logs, test reports, features, and support.

　　Beyond our tests, we also considered the most popular, award-worthy, universal, and affordable designs. These OBD2 scanners serve a range of drivers, vehicles, applications, styles, and budgets.

　　Be sure to practice with your OBD2 scanner before your vehicle breaks down; (photo/Eric Phillips) Buyer’s Guide: How to Choose an OBD2 Scanner Read and Clear Codes The most basic function of an OBD2 scanner is to read and clear the trouble codes that cause check engine lights.Now, what are these codes referring to? A trouble code is produced by the onboard computer system when it senses a status thats out of normal parameters. These hiccups can exist within the engine and transmission, emissions, or other systems.

　　Clearing a code deletes it from the system and turns off the check engine light. If the problem that caused the code in the first place is not fixed, the vehicle will produce the code again and turn the check engine light back on. You can clear a code to verify that it is a recurring problem by waiting for it to come back or after a fix is attempted.

　　We found the Bluedriver Pro to be among the easiest to use, which is great for the uninitiated; (photo/Eric Phillips) Foundation: How to Read an Error Code Codes produced are five characters long and can be broken down simply.The first character of the code represents the system related to the problem:

　　B: Body C: Chassis P: Powertrain U: Undefined Second in line, the next character lets you know whether the code is generic or enhanced:

　　0: Generic 1: Enhanced The third character identifies the sub-system that the code pertains to:

　　1: Emission management (air or fuel) 2: Injector circuit (air or fuel) 3: Misfire or ignition 4: Emission control 5: Idle control and vehicle speed 6: Output circuit and computer 7: Transmission 8: Transmission 9: SAE Reserved 0: SAE Reserved The fourth and fifth characters are variable and relate to specific problems.

　　The OBDLINK MX+ hit high marks for the majority of our field tests and is one of the highest-quality scanners; (photo/Eric Phillips) Code Reading Interface While all the scanners in our guide can connect to the vehicle and produce this five-character trouble code, some of them make it easier to not only read the codes, but can also read more vehicle-specific codes. To point, the Motopower MP69033 doesnt have many features, therefore it has an uncomplicated menu that is very self-explanatory to use in order to read and clear basic codes.

　　Alternatively, we considered the Bosch 1300 OBD to be among the most time-consuming to read codes as it asks a few questions before reading the codes. With all consideration, its still pretty fast. It can read airbag and ABS codes on top of normal codes. 

　　Any of the Bluetooth code readers use a phone-based app to read the codes compared to pushing physical buttons. The user interface of such designs is much quicker to use and delivers more information. Each Bluetooth app will walk you through step-by-step instructions to connect to your vehicle and then read any error codes.

　　The Ancel BD31 can read both airbag and anti-lock braking system (ABS) codes. The Bluedriver Pro can read airbag, tire-pressure monitoring system (TPMS), and ABS. And with a strong throw-down, the OBDLINK MX+ can read ABS, airbag, TPMS codes plus additional GM and Ford codes and parameters that are off limits to other code readers. 

　　Ancel BD31 is both a Bluetooth and wired scanner plus a HUD option; (photo/Eric Phillips) Diagnostics Before diagnostics, the first step when using an OBD2 scanner is to read the code, which is provided in a basic five-character format. When a scanner provides its reading, itll deliver a basic description associated with that code. The Motopower MP69033, for example, only displays the code and its foundational descriptions.

　　Take P0113, for instance, which is the code that identifies the Intake Air Temperature Sensor 1 Circuit High. After you have the code in hand comes diagnostics, or trying to diagnose the problem that caused the code in the first place. Many scanners in our guide go a step above reading codes and also provide high-quality diagnostics. The Bosch 1300 OBD provides the same information on its screen as the Motopower MP69033 but has an internal library of 26 million possible fixes for different error codes. On a different screen, you can type in the specific error code to find possible fixes, which is pretty advantageous.

　　Bluetooth-compliant OBD2 scanners go a step further by connecting to the internet, which helps open up a library of information when it comes to understanding codes. On their display readout of the error code, they will include a link to the internet to search the specific code in order to find fixes. Its worth noting that this only works with cell service, unlike the Bosch 1300 OBD, which has its diagnostics saved internally in its computer. The standout in this realm was the Ancel BD31, coming in hot with six possible faults per error, plus a link to view more information via Google for every faulty code.

　　Bluetooth-compatible OBD2 scanners provide data via an app; (photo/Eric Phillips) Live Data and Real-Time Monitoring OBD2 scanners not only read codes but can also show you real-time data about your vehicle. First and foremost, each trouble code is associated with a sensor on your rig. When that sensor identifies data beyond its typical parameters, it triggers the code. You can use a scanner to view the live data from any of the sensors on your vehicle.

　　Certain scanners let you view only one set of sensor data at a time, while others monitor and display lists of multiple sensors at once. Some of these code readers can chart these data sets with a graph or numerically, while others put them into an easily readable display much like the one on your vehicles dashboard. 

　　Regarding this feature, the standout scanner was the OBDLINK MX+. First, the design uses a heads-up display similar to a dashboard gauge to show 13 specific and comprehensible parameters. Secondly, you can choose to monitor any of the vehicles sensors on a different screen. Lastly, it archives the data for all of the vehicles sensors. Not only does it collect data from hundreds of vehicle sensors, but it also logs trip data, including GPS, trip distance, fuel economy, and more. It can be pretty useful for a scanner to be able to record what the sensors were doing during a trip and save that data into a log.

　　The Bosch 1300 OBD includes a whopping collection of six different connectors; (photo/Eric Phillips) Ease of Use When you first start using OBD2 scanners, it might feel that these are instruments reserved for the professionals. But modern day scanners make it easy for any level of automotive enthusiast to use and even understand trouble codes. Each character-reader has step-by-step instructions and prompts to help walk you through connecting and scanning your vehicle.

　　When it comes to ease of use, the Bluetooth-compatible scanners really shine. To read error codes with these setups, you need to download the corresponding app for a compatible phone or tablet. Then, you plug the scanner into the OBD2 port on a vehicle and connect via Bluetooth. From here, the apparatus is controlled through the app, where the user interface is more vivid and comprehensive compared to the traditional wired scanners. 

　　We found that the Bluedriver Pro and corresponding app were the easiest to operate. Reading and clearing codes was done via a simple menu. The mechanism provided obvious instructions for every step of the process. We had a plain-sailing experience with the app throughout different functions, and it offered a user manual that was readily available. 

　　OBD2 scanners can display information through various interfaces; (photo/Eric Phillips) Connection Each scanner connects to the vehicles OBD2 port via an OBD2 plug. The machine either utilizes a wire from the port to the scanner or a Bluetooth connection to a cell phone or tablet. 

　　Wired Wired OBD2 scanners are more common and are the original design. The brain of the scanner is contained within its own shell. They come with a screen that displays information, and the face buttons control the device.

　　These dont require additional batteries or accessories to operate and can even store information offline, like the 26 million code fixes in the Bosch 1300 OBD. Using the scanner means you need to be physically close to the OBD2 port, which usually means sitting in the front seat of the vehicle due to the constraints of the wire. They take up more space compared to their Bluetooth counterparts. 

　　Bluetooth Bluetooth scanners are very small in size. They still plug into the vehicles OBD2 port but dont use any wires. Instead of an included screen and a wire, this appliance uses Bluetooth to connect to a phone or tablet. The brain behind the system is an app that needs to be installed onto your phone or whatever device youre using like a remote control.

　　Compared to old-school accessories, using a phone means youll have a much larger and crisper screen. Plus, the user interface is an even bigger piece of cake. These auto gadgets take up considerably less space when not in use. You can even leave them plugged into the OBD2 port when theyre powered down. One drawback: In order to be used on the fly, they need a fully charged and compliant phone or tablet with the app previously installed. Also, they wont display some information if youre out of cell phone coverage or lacking a WiFi connection. So theres some contingency with the functions.

　　We tested a range of OBD2 Scanners to help you find the best one; (photo/Eric Phillips) FAQ What does an OBD2 scanner do?  OBD stands for onboard diagnostics, which refers to a standard protocol across most light-duty vehicles to retrieve vehicle diagnostic information. Simply put, this scanner talks to your vehicles computer.

　　From here, the contraption can use that connection to read and clear check engine lights or codes. Certain ones can take the data from the vehicle and apply diagnostics to show possible causes and fixes. 

　　Some designs also have the ability to measure driving behavior or show real-time data from the vehicle.

　　OBDLINK MX+ data is viewable on a 6-gauge digital display via an app; (photo/Eric Phillips) Do OBD2 scanners work on all vehicles?  In 1996, OBD2 became mandatory for all vehicles that are manufactured in the United States. In 2001, the European Union followed suit. OBD2 scanners should work on all cars manufactured those years or after.

　　As new vehicles are released, scanners are continuously updated with the ability to communicate with those models, but this process usually takes a few years.

　　Some vehicles manufactured in places like Canada and Japan have their own versions of OBD2. Its best to double-check that your vehicle is compliant with any scanner before you purchase it.

　　Can you control your car through OBD2? In short, you cannot drive or steer your vehicle through an OBD2 port.

　　That being said, you can control a range of automotive systems like the check engine lights, airbags, anti-lock brakes, oil maintenance lights, and more.

　　Bluetooth-operated OBD2 scanners offers a conventional and premium user experience; (photo/Eric Phillips) What problems can OBD2 scanners detect? OBD2 scanners are designed to detect a standardized list of diagnostic trouble codes and check engine lights.

　　Usually your vehicle will display a check engine light if any error codes are produced. The codes produced are five characters long and can be both generic and specific about each problem.

　　These computers can detect problems with the engine, transmission, emissions, electronics, airbags, brakes, and more.

　　We appreciated that the Ancel BD31 provided six different potential fixes per error; (photo/Eric Phillips) Whats the difference between OBD1 and OBD2? Before OBD2 was standardized across the United States, some automotive manufacturers used basic OBD1 ports to provide vehicle information. That camp included 1984-1995 Ford and GM vehicles and 1989-1995 Chrysler and Toyota vehicles. OBD1 was rather generic regarding what information could be provided compared to its younger brother, OBD2.

　　When it came on the scene, OBD2 standardized error codes across manufacturers. In OBD1 iterations, the same error code could signify different issues across various manufacturers.

　　In an exclusive take, the Bosch 1300 OBD was the only gadget in our guide able to read OBD1 and OBD2 codes.

　　DTC stands for diagnostic trouble code when you read an OBD2 scanner; (photo/Eric Phillips)

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