Best OBD2 Scanners

Speed Reads:

• The best OBD2 scanner in 2023 is the BlueDriver Bluetooth Pro OBDII Scan Tool. The Bluetooth Pro from BlueDriver is incredibly easy to use and doesn’t break the bank.
• The TOPDON ArtiDiag800BT is a fantastic option for those who specifically want an OBD2 scanner with key programming capabilities, as it can do that and much more.
• Drivers who work on their cars from time to time, don’t regularly drive one of their vehicles, or simply want to read a few engine codes should consider the Foxwell NT201.

Best OBD2 Scanner

BlueDriver Bluetooth Pro OBDII Scan Tool

A wireless option with advanced abilities for the price.

4.5/5

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Best OBD2 Scanner
with Key Programmer

TOPDON ArtiDiag800BT

An easy-to-use OBD2 scanner with a wide range of functions.

4.5/5

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Best Consumer OBD2 Scanner

Foxwell NT201

An inexpensive scanner that accurately and reliably pulls OBD2 engine codes.

4/5

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Best Budget OBD2 Scanner

Motopower MP69033

A simple, effective, low-cost OBD2 scanner.

4/5

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Best Bluetooth OBD2 Scanner

Innova CarScan Advisor 5110

This affordable complete package includes Bluetooth and ABS monitoring.

4.3/5

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A check engine light can signal a wide variety of issues, but many of them are easy to fix at home. However, diagnosing the severity of any car trouble requires an onboard diagnostic (OBD) tool. The best OBD2 scanner for the average driver will often cost under $40 and can save you many unnecessary trips to the mechanic.

To help readers find the right scan tool (at the right price), we tested several top options. From simple code readers to advanced OBD2 scanners that can reprogram an engine control module (ECM), the right scanner for you may differ depending on your expertise level and repair skills. In this review, we recommend our eight favorite OBD2 scanners based on our testing and explain, in simple terms, the benefits and drawbacks of each one.

To help you find the best OBD2 scanner for your vehicles, our team spent several days researching and testing the best OBD2 scanners. We’ve narrowed the list down to our eight top picks and provided recommendations for options with different uses and price points.

Based on a high volume of positive consumer feedback and our own personal experience using these scanners, we assessed each device in rating categories including ease of use, speed, compatibility, and value.

What Are The Best OBD2 Scanners?

According to these criteria, the best OBD2 scanners are the BlueDriver Bluetooth Pro OBDII Scan Tool, TOPDON ArtiDiag800BT, Foxwell NT201, Motopower MP69033, Innova CarScan Advisor 5110, Autel MaxiCOM MK808 Scanner, Ancel B0310, and the Launch CRP129E Scan Tool.

The table below highlights the OBD2 scanners’ performance in each review category:

After we tested several options ranging in price, we determined that Foxwell offers the best OBD2 scanner with the NT201 because the scanner is compatible with so many vehicle makes/models and is so easy to use.

Compare OBD2 Scanners

While the BlueDriver Bluetooth Pro OBDII Scan Tool is our top pick, the best ODB2 scanner for you will depend on your needs and budget. In the table below, you can compare the top eight OBD2 scanners on our list:

*Because cost data fluctuates, the prices in the table above are approximate values that our team regularly updates.

For those interested in learning more, we’ve provided a detailed review of each of the top portable power stations in the sections below:

1. BlueDriver Bluetooth Pro OBDII Scan Tool: Best OBD2 Scanner

Best OBD2 Scanner

4/5

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BlueDriver OBD2 Scan Tool Review

The BlueDriver Bluetooth^® Pro OBDII Scan Tool runs a smartphone-based diagnostics test. We like the fact that this OBD2 scanner’s manufacturer, BlueDriver, includes routine software updates for a free mobile app that works with Android smartphones and Apple iPhones.

This relatively simple system plugs the car scanner into your vehicle’s OBD2 port, which is usually located beneath the steering column. The BlueDriver connects via Bluetooth to the smartphone app, from which you can view live data reports from the engine and coolant systems. You can also perform a smog test with this scanner, and it will recommend possible repairs for specific codes.

You can see how the BlueDriver Bluetooth Pro OBDII Scan Tool performed in each category below:

The BlueDriver Bluetooth Pro OBDII Scan Tool is compatible with a range of vehicles and is incredibly easy to use. Below are the pros and cons of the BlueDriver Bluetooth Pro OBDII Scan Tool:

BlueDriver Bluetooth Pro: Our Experience

The BlueDriver is one of the easiest-to-use OBD2 scanners we tested. You simply download the companion smartphone app and plug the scanner into your vehicle. Diagnostics and monitoring run through the app, which has a simple interface.

Along with conducting basic diagnostic tasks, you can set up customizable monitoring of basic information like engine RPMs and exhaust pressure. A full list of monitoring functions can be found here. For more information on this great OBD2 scanner, check out our dedicated review page here.

BlueDriver Bluetooth Pro: What Customers Are Saying

This OBD2 scanner’s Bluetooth functionality, easy-to-use system, and technical support are popular with buyers.

“No joke, I work on cars all the time. I’ve had cheap scanners and snap-on scanners. For the price of this, you cannot go wrong. This little scanner reads not only engine codes, but also reads codes from transmission codes and BCM codes.”

– Keith S. via Amazon

Some question the data’s reliability and say the device isn’t compatible with as many vehicles as advertised. A few of the BlueDriver’s features seem more limited on European cars.

“The scanner itself worked well on both a VAG Skoda and Hyundai. However, it seems disingenuous to sell this device at the full price in Europe when the advanced features don’t actually work on European model cars.”

– Al via Amazon

2. TOPDON ArtiDiag800BT: Best OBD2 Scanner With Key Programmer

Best OBD2 Scanner with Key Programmer

4/5

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TOPDON ArtiDiag800BT Review

If you’re looking for a top-of-the-line OBD2 scanner with a lot of service functions, you might consider TOPDON’s ArtiDiag800BT. It can reset your steering wheel, recalibrate your windows, and even reprogram your keys. The ArtiDiag is compatible with 96 vehicle manufacturers and a good choice for those who need a tool capable of advanced OBD2 functions. The large display also makes it good for viewing live data graphing.

You can see how the TOPDON ArtiDiag800BT performed in each category below:

The TOPDON is a great option for those looking for a code reader with key programming abilities. Below are the pros and cons of the TOPDON ArtiDiag800BT:

TOPDON ArtiDiag800BT: Our Experience

Everything about the TOPDON is designed for easy use and handling. The device comes in a sturdy, ergonomically-shaped case. The Bluetooth dongle slots into the scanner itself and is easily removed with a single push. Setting up the TOPDON requires an internet connection as you’ll need to input the included activation code. Once your account is made, TOPDON provides free lifetime updates.

The large touchscreen interface is easy to navigate and can be used even by those without advanced auto maintenance knowledge. There is even a “learning” feature, that will show you how to use some of the advanced functions. The menu layout is among the most straightforward of the scanners that we tested.

We were able to use the TOPDON to recalibrate the power windows in our test vehicle, fixing a longstanding issue.

TOPDON ArtiDiag800BT: What Customers Are Saying

Users are pleased with the scanner’s ability to detect fault codes, even those that may not show up on other scanners.

“I highly recommend [TOPDON] because what is advertised is real. I scanned a Jeep Renegade and a code came out of a short circuit in the daytime running lights, a code that the Launch and the Thickcar [OBD2 scanners] had not given.”

– Nik via Amazon

Others praise the TOPDON for being a professional-level scan tool that is nonetheless easy for mechanics of almost any skill level to navigate.

Those dissatisfied with this OBD2 scanner say that the battery drains quickly. Some also complain about advanced features not working, such as key programming. Features like key programming and anti-theft matching may only be available for certain vehicles.

3. Foxwell NT201: Best Consumer OBD2 Scanner

Best Consumer OBD2 Scanner

4/5

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Foxwell NT201 Review

For most car owners, the best OBD2 scanner is something inexpensive that can read (or pull) OBD2 engine codes. The Foxwell NT201 fits these criteria at a low cost.

While it doesn’t offer much in the way of advanced functions, we found the NT201 does provide basic data collection, real-time engine data, and freeze-frame data. With this device, you’ll be able to read and clear your own engine codes with ease.

You can see how the Foxwell NT201 performed in each category below:

4. Motopower MP69033: Best Budget OBD2 Scanner

Best Budget OBD2 Scanner

4/5

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Motopower MP69033 Review

If you only need an OBD2 scanner to read engine codes, the Motopower MP69033 is your best bet. It is low-cost, easy to use, fast, and reliable. The downside of this scanner is that reading engine codes is all that it can do. It cannot clear engine codes (to turn off your check engine light). If you don’t clear an engine code, your check engine light will remain lit, even after a problem has been fixed (though most will eventually turn off on their own).

You can see how the Motopower MP69033 performed in each category below:

5. Innova CarScan Advisor 5110: Best Bluetooth OBD2 Scanner

Best Bluetooth OBD2 Scanner

4/5

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Innova CarScan Advisor 5110 Review

The Innova CarScan Advisor 5110 costs slightly more than other basic OBD2 scanners but also offers a wireless Bluetooth mode as well as ABS monitoring. The CarScan Advisor 5110 is simple to operate and automatically reads codes as soon as it is plugged in. It’s a good pick if you want a no-frills code reader.

You can see how the Innova CarScan Advisor 5110 performed in each category below:

6. Autel MaxiCOM MK808 Scanner: Best Professional OBD2 Scanner

Best Professional OBD2 Scanner

4/5

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Autel MaxiCOM MK808 Review

Those who want an OBD2 scanner that includes a wealth of diagnostic features will appreciate the Autel MaxiCOM MK808 Scanner for toeing the line between advanced scanning features and business-friendly applications. This 7.0-inch HD touchscreen behemoth has a 7-hour battery life, so buyers aren’t tethered to the vehicle for work.

Autel updates the device for free for your first year of ownership, but it already comes with plenty of information about American, European, and Asian car brands. Also included is an app that stores automotive and customer data, so you get an OBD2 scanner and logbook all in one.

You can see how the Autel MaxiCOM MK808 performed in each category below:

7. Ancel B0310: Best Bluetooth OBD2 Code Reader

Best Bluetooth OBD2 Code Reader

4/5

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Ancel B0310 Review

The Ancel B0310 will perform the most basic OBD2 functions and is broadly compatible with common vehicle manufacturers. It costs a little more than other scanners with similar functionality because it can be operated wirelessly via Bluetooth.

Using the Bluetooth app (available for both Android and iOS) allows access to a few more functions, notably real-time data monitoring of engine temperatures.

You can see how the Ancel B0310 performed in each category below:

8. Launch CRP129E Scan Tool: Best OBD2 Gauge Display

Best OBD2 Gauge Display

4/5

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Launch CRP129E Scan Tool Review

The Launch CRP129E Scan Tool features a 5.0-in. color screen and comes with an internal battery. You can also graph live data, reset diagnostic trouble codes (DTC), and perform emissions tests.

One plus is that Launch offers free lifetime updates as long as you buy from an authorized dealer. The Launch CRP129E comes with data code protocols from nearly 60 carmakers and over 1,000 models, so this scanner likely knows something about your vehicle.

You can see how the Launch CRP129E performed in each category below:

The best OBD2 scanner for you depends on the vehicle information you need and your level of mechanical know-how. If you’re looking to make simple repairs or ensure your car will pass inspection, a basic OBD2 scanner can be a great investment. If you want to perform more advanced tasks, like reprogramming your engine control module, you’ll need a specialized scanner.

Mechanics who we speak to typically tell us that the most important feature of any OBD2 scanner is that it can read engine codes. Other design features can be nice, but for many, a basic code reader is all they need. Zac Salerno, a mechanic at Import Performance with more than three years of experience, told us,

“You don’t need [an advanced code reader] right out the gate. A Foxwell will do you just fine. It’ll read your codes, you’ll get an idea of what’s going on. And that’s the biggest part, is at least getting a jumping-off point to figure out where your diagnosis starts.”

What Is An OBD2 Scanner?

An OBD2 scanner is a computer that connects with a car to communicate with that vehicle’s onboard computer. OBD2 scanners have many functions, but the most basic is to “read” engine fault codes. When a check engine light comes on, an OBD2 reader can help you get a general description of the issue. These tools will display engine fault codes, the necessary starting point for diagnosing most modern automotive malfunctions.

You may want an OBD2 scan tool for several reasons, even if you aren’t a professional mechanic. With an OBD2 reader, you can:

• Diagnose and perform minor maintenance on your own vehicle
• Perform home emissions checks before a state inspection
• Confirm the mileage on a used car before purchase
• Read fault codes yourself to determine the urgency of a check engine light

A low-cost, reliable OBD2 scanner can be purchased for $20 to $40. While advanced scan tools can offer improvements and extra details on all of these features, they can also cost upwards of $200. Many of these advanced features are really only useful to home mechanics who feel comfortable working on their own vehicles and are not intended for average drivers.

How Much Does An OBD2 Scanner Cost?

An OBD2 scanner can cost anywhere from $30 to $500 dollars. Unless you’re a professional mechanic, you probably don’t need the costliest option. However, the cheapest OBD2 scanners sometimes have hidden costs, such as the requirement that you pay a subscription to access advanced features. Here’s what you can generally expect with each price range:

• Under $60: You can get a basic, efficient OBD2 scanner for around $60. Devices in this range can read a good range of OBD trouble codes and perform an emissions test. Some scanners in this price range may require a subscription for updates. There are Bluetooth^® OBD2 scanners in this price range, but these either have hard-to-use apps or require a subscription.
• $100 to $200: Scanners in this range offer a wider range of functionality, such as live data and monitoring of ABS and airbag systems. Many Bluetooth OBD2 scanners fall in this price range. Because a Bluetooth scanner uses your phone’s screen and computer, it can be less expensive than a wired scanner with similar functionality. If you’re an at-home mechanic working on your own car, this is a good price range for an OBD2 scanner.
• Over $200: These OBD2 scanners typically offer a wide range of features, including advanced code reading, SRS, transmission, and ABS monitoring. In this price range, OBD2 scanners should offer accurate live data and include design features like a large touch-screen display. These scanners typically work with a large variety of manufacturers, even specialty luxury brands, and can include free lifetime updates.

OBD-II Scanners: What We Think You Should Know

The best way to determine the OBD2 scanner you need is by considering the type of work you’ll be performing. If you’re taking a weekend to double-check an assessment from a mechanic or see why the check engine light is on, you’ll only need something that can read codes.

But keep in mind that not all OBD2 scanners work perfectly with every make and model of vehicle. If you have an older or uncommon car, you may need to do some research to learn which OBD2 scanners will best interact with your vehicle.

If you consistently work on multiple vehicles as a job or hobby, you may want a scanner that’s compatible with foreign and domestic cars and receives updates regularly. Being able to send commands or change vehicle settings is helpful if you’re working with temperature sensors or tire pressure monitors. Access to readings such as the ABS and misfire information can help better diagnose a car’s overall health.

Just remember, more features and programming options mean a higher price tag.

OBD2 Scanner Compatibility

While many OBD2 codes are universal, a good number aren’t. In addition to common codes, all cars also have manufacturer-specific fault codes. The best OBD2 scanners can read codes from most major brands. If you plan to use your OBD2 scanner with a specific vehicle or set of vehicles, make sure it is capable of reading error codes for that manufacturer.

Bluetooth OBD2 Scanners

When you’re looking for the best OBD2 scanner, Bluetooth connectivity is worth considering. Since having a physical cord usually keeps you close to the vehicle while you’re performing a diagnostic, wireless scanners are gaining popularity because of their simplicity and data collection capabilities.

All you need is a smartphone with Bluetooth capability and the scanner’s corresponding app (which may not be free), and you can review data directly from your phone.

This can be a wonderful option if you’re looking for a “set it and forget it” tool that collects data while you’re driving, but it also frees users to look under the hood while running a diagnostic. However, some higher-end scanners come with internal batteries that last for hours, so the amount of information you need will dictate the best OBD2 scanner for your job.

If a Bluetooth OBD2 scanner seems like a better fit for you, we’ve reviewed and tested a handful of the top products on the market.

OBD-II Protocols

There are several different communication “protocols” that onboard computers may use to communicate with an OBD2 scanner. The most common are:

• ISO15765-4 (CAN-BUS)
• ISO14230-4 (KWP2000)
• ISO9141-2
• SAE J1850 VPW
• SAE J1850 PWM

Different manufacturers use different protocols and some protocols are more common in older vehicles. It isn’t necessary to know the difference between these protocols, but to check if a scanner is compatible with your vehicle. Check your car’s OBD2 protocol by searching your year, make, and model followed by “OBD2 protocol” with a search engine.

How To Use An OBD2 Scanner

While every OBD2 scanner has different buttons and a different interface, many of them work similarly. To use the most advanced functions of your scanner, you’ll need to check the owner’s manual. Otherwise, the process is very straightforward.

Plug It In

Your first step is to find the OBD2 port. This is typically located beneath the steering wheel and to the left. The slot is shaped like a trapezoid and contains 16 pins. The location of this port should be described in your car’s owner’s manual.

Start Your Engine

In order to read fault codes, your vehicle (and your vehicle’s computer) must be turned on. After attaching your OBD2 scanner, start your engine.

Read And Clear Codes

The most basic OBD function (which every OBD2 scanner should be able to do) is to read and clear error codes. When your vehicle’s computer detects an issue, it records a diagnostic trouble code (DTC) that broadly describes the malfunction. A DTC starts with the letter P, B, C, or U, and is followed by a string of numbers. The first letter indicates what part of your vehicle has an issue.

• P: Indicates an issue with the powertrain (the engine, transmission, and fuel system)
• B: Indicates an issue with the body (cabin interior parts such as the steering system, airbags, and seatbelts)
• C: Indicates an issue with the chassis (components underneath the car such as the axles, ABS, wheels, and power steering)
• U: Indicates a network issue (wiring)

Some DTCs apply to all vehicle makes, while others are specific to certain brands. The first number in a DTC is always either 0 or 1. ‘0’ is a universal (generic) code and ‘1’ is a manufacturer-specific code.

The numbers that follow may further specify the issue. If your OBD2 scanner shows a DTC, type this code (followed by the manufacturer, for manufacturer-specific codes) into any search engine to quickly learn what it indicates.

OBD2 scanners can also clear codes from your system’s computer. If the underlying issue isn’t repaired, this code (and the check engine line) will eventually return.

Emissions Test

Most OBD2 scanners have an emissions test function. By running an emissions test, the scanner can help you determine if you’ll pass a state inspection before it happens, potentially saving you a lot of time. Should there be a problem, you can address it before you take your vehicle out for an inspection.

Real-Time Data

Accessing real-time data is not necessary for most people. For those with advanced automotive know-how, this information can help optimize engine performance and diagnose certain repairs. In addition to engine information like temperature, RPMs, and fuel injection rate, you can also monitor ABS and battery data.

For a more in-depth, step-by-step guide about how to use OBD2 scanners, check out our informational guide.

What Does An OBD2 Scanner Do?

At a minimum, any OBD2 scanner should be able to read and clear DTCs. Beyond that, capabilities can vary greatly. Some common useful OBD2 scanner functions include:

• Steering Angle Sensor (SAS) calibration: All modern vehicles are equipped with power steering systems that greatly assist in handling. If the SAS is improperly calibrated, your vehicle will be difficult to steer and may handle strangely (the wheel turning too easily, or only with difficulty). The SAS typically needs to be reset after any wheel alignment.
• Diesel Particulate Filter (DPF) reset: A diesel particulate filter traps exhaust soot on vehicles with diesel engines. A DPF rest (also called DPF regeneration) is a process where accumulated dust is burned away. If the DPF accumulates too much debris, it can become clogged and lead to engine shutdown.
• Smog test: A smog test measures your engine’s emissions and determines if your emissions systems are working properly. All vehicles in the United States must meet certain emissions standards. You cannot pass inspections by running tests at home, but you can determine beforehand if your vehicle will pass an emissions test.
• Live data graphing: OBD2 scanners may be capable of monitoring any number of car systems. A live graphic function displays this data (such as engine temperature) as a graph in real time. This function can help diagnose certain engine issues or be used to optimize performance. This feature is not something that the layperson is likely to find useful, however.
• Freeze frame data: Some OBD2 scanners can record freeze frame data. This is information about your vehicle’s systems at the time when an error code occurred. Freeze frame data is useful for diagnosing problems.

For non-mechanics, the most useful OBD2 scanner features are reading error codes and the smog test. More advanced features are only useful when paired with at least some mechanic know-how.

For most drivers, the Foxwell NT201 is the best bet for an OBD2 scanner. Unless you are a serious mechanic, you’ll only need an OBD2 scanner that can read and clear engine codes. The ability to run an I/M readiness check and scan ABS systems can also be useful, even to the layperson. These features are all common among $40 OBD2 scanners.

Those looking for an advanced scanner to perform complex diagnostic functions should check out the TOPDON ArtiDiag800BT, which has a large touchscreen display and can test just about every system in your vehicle.

1. Best OBD2 Scanner: BlueDriver Bluetooth Pro OBDII Scan Tool
2. Best OBD2 Scanner with Key Programmer: TOPDON ArtiDiag800BT
3. Best Consumer OBD2 Scanner: Foxwell NT201
4. Best Budget OBD2 Scanner: Motopower MP69033
5. Best Bluetooth OBD2 Scanner: Innova CarScan Advisor 5110
6. Best Professional OBD2 Scanner: Autel MaxiCOM MK808 Scanner
7. Best Bluetooth OBD2 Code Reader: Ancel B0310
8. Best OBD2 Gauge Display: Launch CRP129E Scan Tool

Below are some common frequently asked questions about OBD2 scanners:

*Data accurate at time of publication.