Best OBD2 Scanners: Work Like a Real Detective

Batman knows: There are some gadgets that make life easier.

byHank O'Hop|
The best OBD2 scanners
OBD2 scanners are incredibly useful tools. Peter Nelson
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If you own a car, you need an OBD2 scanner. The most basic function of these devices is to tap into your vehicle's onboard diagnostics system to read and clear engine trouble codes. But then, depending on the model you select, OBD2 scanners can also be used to read trouble codes from multiple vehicle systems, provide a real-time reading of the vehicle's running condition, and more to help you troubleshoot issues.

If you're just starting out, it can be confusing to decide which scanner works for you. Even if you know which features you want, it can be equally as difficult to figure out which models are worth your money. I’m here to provide you with some insight that'll help you breeze right through your OBD2 scanner experience.

Best Overall

Innova OBD2 Scanner

Summary
This easy-to-use scan tool serves the serious DIYer and beginners well. It can outperform entry-level tools in diagnostic testing but retains an easy-to-use interface and can be paired with your Smartphone via app.
Pros
  • Reads ABS and transmission codes along with engine codes 
  • Can be paired with helpful app 
  • Runs tests on battery and alternator
  • User-friendly layout
Cons
  • Quality control issues are common 
  • Expensive for beginners
Best Value

Motopower OBD2 Scanner Code Reader

Summary
It's affordable, easy to use, and will scan what you need it to. This is the best choice for reading engine codes on a budget.
Pros
  • Affordable 
  • Easy to use 
  • Large backlit display reduces eye strain
Cons
  • Limited functionality 
  • Slow operation
Best High-End

Autel Scanner MaxiCom 2022 Bidirectional Diagnostic Tool

Summary
A pro-level tool that does it all. This tool runs comprehensive testing alongside reading engine codes and is an excellent choice at home or for a professional setting.
Pros
  • Comprehensive diagnostics functionality 
  • Easy to use 
  • Loaded with additional features 
  • Updatable software
Cons
  • Expensive 
  • Limited functionality on some popular models

Summary List

Our Methodology

The best OBD2 scanners are intended to serve the DIY crowd, and that was my focus as I chose my top picks. While there are professional-level offerings here, I didn’t solely consider that type of consumer. I put in the time and research to make sure my recommendations and advice help those who are new to fixing their cars and can help them ease into the discussion along with the more experienced enthusiasts and professionals. I made sure to read what pros use as well as what the average DIYer is looking for to ensure our list has something for everyone in need of an OBD2 scanner. 

Best OBD2 Scanners: Reviews & Recommendations

Best Overall: Innova OBD2 Scanner 

Pros

Reads ABS and transmission codes as well

Can be paired with app

Runs tests on battery and alternator

User-friendly layout

Cons

Quality control issues common

Expensive for beginners

The Innova is the top pick because it'll serve both the beginner and more experienced wrenchers well. Along with reading engine trouble codes, this model can tap into multiple vehicle systems and provide a live reading of the run condition. It's also able to provide readings of transmission and ABS codes, which already sets it apart from entry-level units. Pairing it with the Repair Solutions 2 App reveals what codes mean as well as providing potential fixes. That function in combination with the simple interface makes for a user-friendly experience unmatched by much of the competition. Code severity levels, an oil light reset function, and battery and alternator test further prove this to be a must-have tool if you're doing any kind of work on modern cars.

This is a great device, but quality control issues are common. Devices showing up with missing pieces or potentially used are relatively common. The price might keep the average beginner from adding the Innova to their collection.

Best Value: Motopower OBD2 Scanner Code Reader

Pros

Affordable

Easy to use

Large backlit display

Cons

Limited functionality

Slow operation

Motopower’s scanner is an excellent choice for those who need a basic tool to read codes and don't want to spend a fortune. This device simply hooks up to the OBD port and provides the user with engine codes that cause the vehicle's check engine light to appear. It's also very easy to set up and use, and a large backlit display reduces eyestrain and can provide live data for a real-time reading on the run condition.

This device will not read ABS or transmission codes, as it's pretty limited in functions. Also, its operational speed is rather slow, which does cause some frustration.

Best High-End: Autel Scanner MaxiCom 2022 Bidirectional Diagnostic Tool

Pros

Comprehensive diagnostics functionality

Updatable software

Easy to use

Loaded with additional features

Cons

Expensive

Limited functionality

Autel's MaxiCom scanner is one of the tools you should seek to add to your collection as your automotive repair skills evolve. This device will read and clear engine codes but can also tap into the vehicle's many systems to perform various diagnostics tests. It will read ABS, body, and transmission codes and can even be used to bleed the ABS. It's easy to use and is packed with additional features that make a big difference in a professional setting, such as checking emails. And because it's targeting pros, the scanner can be updated.

This is not priced in line with most DIYer scanners. Even though it's a cost-effective solution for a pro-level tool, it's still expensive. Also, it's important to verify that it will work with your particular car as its functions are limited for some popular models.

Pros

Wireless design clears clutter

Easy to use app

Covers basic functions

Easy to store

Cons

Expensive for a smartphone-based system

Limited functionality

The BlueDriver Pro Bluetooth scan tool is the perfect tool for the minimalist. There are no chords, no wasted devices, just a simple unit that makes use of your smartphone. The BlueDriver pro uses an app to give you engine codes, the means to clear them, and even a live data feed to check the vehicle's running condition. It's easy to set up, easy to use, and even easy to store.

As handy as this unit is, it's relatively limited in that it only reads engine codes. Despite that, its cost is similar to models that offer more useful functions to seasoned DIYers.

Our Verdict on the Best ODB2 Scanners

The Innova OBD2 Scanner is the best choice for the average consumer. It's not at pro-level tool pricing, but it'll still do more than the average entry-level scanner can. The Motopower OBD2 Scanner Code Reader is an excellent choice for those who need a scanner without a long list of additional features. 

Things to Consider Before Buying an OBD2 Scanner

OBD2 scanners are amazing devices that can do a lot of things for mechanics. That doesn't make the selection more complicated. Going over every last detail is important for high-level consumers and mechanics, but that's not the case for someone just needing to advance their workmanship in the home garage. If you're new to this, these tips will point you in the right direction. 

Key Features

Vehicle Compatibility 

The first thing to make sure of is that any scanner you're considering will work with your vehicle. Not all are compatible with every vehicle or can even connect to them, and that's the first place to start. Take the time to make sure that the scanner will work for your car or any car you plan to buy in the future before you decide to buy it. This concern affects owners of luxury and many European cars, but it's always worth double-checking vehicle compatibility. 

Functions 

Some scanners just read engine codes. Others can read engine codes along with transmission and ABS codes. Then there are models that can read all of those as well as perform checks on the various components of a vehicle, allowing you to make sure anything attached to the electrical system is in good working order. You don't need a scanner that can do it all if you're just looking to perform basic repairs, and you can save some money by cutting the additional features. However, you can't afford to skip those functions if you're tackling more challenging projects or looking to do automotive repair work at a professional level. 

Connection Type

Most OBD2 scanners use a wired connection, which is great for a few reasons. The biggest advantage is that the tools can generally tap into the vehicle's power for operation, cutting out the dependence on additional batteries in some cases. If it's something you dislike or you prefer reading codes remotely, a wireless unit is something to look for. Some devices, such as the BlueDriver Pro OBD-II Bluetooth Car Diagnostic Scan Tool, can even send information to your smartphone, cutting out the need to run multiple devices as you investigate. 

Pricing 

OBD2 Scanners can cost as little as $20, and models around that price are perfect for beginners or folks who just need engine codes. Moving up to the $50-$150 price range is when more serious repairs become the norm. Moving up to the $500 to $1,000 range is for DIYers who repair every inch of their vehicles as well as professionals who are just starting out. And if you're a professional working on many different vehicles, it's worth spending even more for high-end units that'll get the job done. 

FAQs on OBD2 Scanners

You’ve got questions. The Drive has answers.

Q: Can you damage your car using an OBD2 scanner?

A: No, an OBD2 scanner won't damage your car. As long as it makes a sound mechanical connection, an OBD2 scanner is completely safe for your vehicle.

Q: Will an OBD2 scanner drain the battery? 

A: In most cases, no. Though an OBD2 scanner draws power from the battery, the car must be on for it to work. You can drain the battery, but you can run the engine to prevent that from happening. 

Q: How do I connect my car to an OBD2 scanner? 

A: The OBD2 scanner comes with a connection specifically for OBD2 ports. All you have to do is plug it in. Some cars, however, require special connectors, and dedicated scanners or adapters must be used. 

Q: Does an OBD2 scanner void my warranty? 

A:  Running diagnostics tests through the OBD2 port with a scan tool likely won't void your warranty.

Q: What type of OBD scanner is my car?

A: If your car was built after Jan. 1, 1996, it's got an OBD2 port. If it was manufactured before that, it might have an OBD-I port or none at all.

Why Trust Us

Our reviews are driven by a combination of hands-on testing, expert input, “wisdom of the crowd” assessments from actual buyers, and our own expertise. We always aim to offer genuine, accurate guides to help you find the best picks.

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