A scanner and car code reader that plugs directly into the OBD2 port in your car to access the onboard computers and systems. The scanner will read the trouble codes put out by the vehicle to help you diagnose the problem so you can fix it and get back on the road. Even if you’re on a tight budget, you can still get a quality OBD2 scanner and car code reader, which could save you a trip to the mechanic. These are some of the best OBD2 scanners and car code readers at various price points and knowledge levels.

Are there alternatives worth considering?

There are thousands of OBD2 scanners and car code readers to choose from. Consider your needs for a scanner or car code reader and your budget when researching the available options. Though the OBD2 scanners and car code readers mentioned are some of the best, there are still alternatives worth considering:
The scan tool works with over 57 car brands, covering OBD2/EOBD/JOBD vehicles. The Launch CRP123X also includes a battery voltage tester and automatic VIN technology to help you identify your car quickly without having to enter it manually. You can update the software anytime when connected to Wi-Fi with free lifetime updates with just one click. The updated battery is new in 2021, upgraded from 4000mAh to 6100mAh to provide an even longer time between charges. The 4-in-1 live data graph creates a diagnostic report that can be shared with a mechanic as needed. Pros:

Free lifetime updatesIncludes a battery tester5" HD touchscreen displayUpgraded battery life in 2021 modelSupports 57 car brands

Cons:

Only works with Android 7.0 OS or newerCheck to make sure compatible with your vehicleSupport takes time to respond

There are no extra connectors or cables needed with this OBD2 car code reader because it uses a standard 16-pin connector. The reader also uses the car’s battery power to work so that you won’t need batteries. For $20 or less at most major retailers, the HyperTough HT309 is a great choice for a budget card code OBD2 reader and scanner. Pros:

Easy to useInexpensivePlug and playWorks with all cars 1996 and newerNo batteries, extra connectors or cables needed

Cons:

Basic functionalityOnly able to read and clear trouble codes, check readiness status

While the HyperTough has only two buttons to enter or exit and scroll with a small display screen, the Autel has a larger display screen for easier viewing and comes with an additional button dedicated to checking emissions status. The LED indicator lights easily let you know if there is a problem with the car’s engine. The red indicator signals a problem, and a diagnostic trouble code (DTC) is present, while yellow shows there may be a problem, and green gives the all-clear. Pros:

Able to graph, record and replay live dataInexpensiveLarge display screenLED indicator lights for quick diagnosis

Cons:

Works for engine lights onlyMay not work on all import vehicles

The Actron CP9600 also provides real-time engine data, including coolant temperature, RPM, sensor readings, mass air flow, oxygen sensor and more. Simply plug in the tool and download the app to your smartphone to get started. The vehicle activity log provides a history of the vehicle procedures and tests already completed, and the MyGarage feature helps you easily access and manage vehicles. With CodeConnect, fixes for the DTCs are reported and verified by Actron’s team of ASE-certified technicians to give the everyday driver the confidence in fixing minor repairs. Pros:

Can be left connected to your OBD2 port at all timesWorks with Android and iPhoneRead real-time engine data from your phoneReads multiple car systems in newer makes and models

Cons:

It does not work with European vehiclesNo battery or oil life reset feature

Simply plug in the device, start your vehicle and tap the scan button on your smartphone to get started. FIXD works with multiple vehicles using the same app, similar to driving tracking devices offered by car insurance companies. For a monthly fee of $5.83, you can get upgraded features like talking to a mechanic, knowing how much a repair could cost, predicting future problems and getting vehicle history if you plan to buy a used car in the future.  Pros:

Can connect multiple devices with one appKeep track of vehicle maintenanceProvides vehicle history for used cars (premium service required)

Cons:

It does not work for all makes and modelsOnly reads and clears check engine lightMust pay an additional fee for upgraded features

The Autel MaxiAP AP 200M is an all-system diagnostic tool that is capable of performing most of your regular maintenance services, including:

Oil lifeThrottle angle resetDiesel particulate filter (DPF) regenerationElectronic parking brake (EPB)Steering angle sensor (SAS)Battery management system (BMS)Airbag reset/deployment loopsAnti-lock brake (ABS) system bleeding

With the Autel MaxiAP AP 200M, you get OE-level system diagnostics with a high level of accuracy, which can save you thousands over visiting a mechanic for service. Pros:

All-system diagnostic plug-in tool with a free smartphone appWorks with all 1996 and newer U.S, European and Asian carsRecords diagnostic data in real-time to generate repair reportsInexpensive for the features offered

Cons:

Must upgrade each year to continue usingUsers indicate the app takes up significant phone space

On top of scanning and clearing all systems, the FixAssist 5160RS can also:

Test hybrid battery cell voltageBleed the ABS systemCheck and recalibrate TPMS/tire pressureRelearn throttle bodyTest for compressionTest cylinder balanceRelearn cam crank position

With an optional adapter, this model can also work on OBD1 vehicles from 1981 to 1995 Ford, GM, Chrysler, Honda and Toyota. If you’re unsure if your particular car is covered, you can enter your vehicle information or VIN at the Innova website to confirm it will work before purchase. Pros:

Complete functionality of all vehicle systemsOptional OBD1 coverage with additional adapterPerform dealership level relearn proceduresCan perform electronic parking brake service and ABS brake bleeding for newer carsIt can be paired with diagnostic app RepairSolutions2 for smartphone access

Cons:

Tech support is slow to respondIt does not work on all makes and models

With limited stock in new and slightly used cars, the average used car buyer is looking at cars seven or more model years old. While you may get a great purchase price, the likelihood of a problem is greater with an older model vehicle. Buying the best OBD2 scanner and car code reader for your make and model can help you save even more by diagnosing and fixing your car yourself.

Cen-Tech OBDII Code Reader: If you have a Harbor Freight close by, this code reader is slightly more expensive than the HyperTough, but it has all the same features and may have a more durable case. Launch CRP123: The next step down from the Launch CRP123X, this model is cheaper but does not come with the tire pressure monitoring reset tool.