

🔧 Diagnose smarter, drive safer — never miss a warning again!
The ATDIAG V321 OBD2 Scanner is a professional-grade diagnostic tool compatible with most OBDII vehicles since 1996. It reads and clears over 35,901 fault codes, monitors battery health, and provides live sensor data with a bright 2.4-inch color display. Designed for durability, it features a heat-resistant cable and rugged silicone case, making it ideal for both home mechanics and professionals. Cloud-based QR code printing enables easy sharing of comprehensive vehicle health reports anytime, anywhere.






| ASIN | B0FB9C6D1N |
| Best Sellers Rank | #11,079 in Automotive ( See Top 100 in Automotive ) #95 in Code Readers & Scan Tools |
| Brand | ATDIAG |
| Customer Reviews | 4.6 4.6 out of 5 stars (18) |
| Date First Available | May 29, 2025 |
| Item Weight | 11.3 ounces |
| Item model number | V321 |
| Manufacturer | ATDIAG |
| Manufacturer Part Number | V321 |
| Model | ATDIAG |
| Product Dimensions | 5.9 x 3.24 x 1 inches |
C**I
EZ
EZ works great
W**S
OBD2 scanner
This OBD2 scanner is a professional-grade tool! It came quickly, and the build quality is robust and easy to handle. It reads trouble codes accurately and fast, and the battery test is an added bonus. It provides the best fit for quick and reliable vehicle diagnostics. connects easy. great to have this utility handy.
E**S
Good
It looks like it will do the trick
C**.
Simple and easy to use! Does exactly what I wanted it to, great tool for the garage!
This code reader and diagnostic tool is simple to use and affordable. No longer do I have to run over to the auto parts store and use theirs. It connects simply as any other and gets you the information quickly. This is a great way to know what you might be dealing with before taking it into the mechanic or helping you troubleshoot and fix yourself, saving $$$!
M**O
new favorite scanner
this is my new favorite obd2 scanner. the buttons on the front allow it to quick pull trouble codes, voltage and readiness status, the obds plug is super easy to grip unlike some others on the market. and it has a non slip back. the unit doesn't seem to be built cheap at all. my only complaint is the cloud print function as it only shows a few live stream data and the number of trouble codes not what the codes actually are on your phone when you scan it. that's why it only gets 4/5 stars. otherwise as a traditional obd2 scanner i definitely recommend
K**I
Haven’t had to use it yet but you should always keep one of these around!
I haven’t needed to use it yet so I can’t really test this but it’s just really important to keep one around. You never know when your car suddenly has an issue and you cannot speak car. You simply plug this into your car’s diagnostic port and refer to the included guide booklet to figure out what the issue is. It seems to do all the things to check the health of your car similar to the ones I’ve borrowed from Autozone in the past. The included booklet has a full picture guide on how to use and a legend of all the codes along with the meaning. Feels very well built and solid. This isn’t too pricey as long as you take advantage of the 50% coupon that they have on the listing. Get it. Don’t be caught without when something suddenly goes wrong (like me in the past. Having to drive around with error codes to borrow one of these is awful when you have no idea what is even wrong).
W**Y
Car fault reader, code reader for diagnosis
I was very excited to try this product! Ive been needing one of these for a while. I love the plug-in and read feature, and that it’s suitable for so many makes and models of vehicle. It definitely saves a lot of money from going to the mechanic just for diagnostic of basic issues. I would highly recommend this product if you have any amount of DIY in you. The user manual does recommend the general areas where it plugs into most vehicles, but you can also find more information in the user manual for your car. Definitely don’t hesitate to buy this, and save yourself around $100 each time, to get your codes read at a mechanic.
A**R
Navigation buttons are confusing
Don't get me wrong, this thing works pretty good but it's frustrating with the way the buttons are. It doesn't have a standard up down left right okay button so navigating screens and whatnot can be confusing. But for an entry level scanner, it does have live data which is nice. It also seemed to work pretty quickly as I have seen some scanners take a little while to boot up. If this had a better Way to navigate, I'm sure I would have given it five stars.
Trustpilot
Hace 1 semana
Hace 2 semanas