CGSULIT SC301 OBD2 EOBD Scanner Engine Code Reader Check Engine Light Emission Analyzer O2 Monitor Test Smog Check

Save $45.99

Style: SC301 Black
Sale price$53.99 Regular price$99.98


Customer Reviews

Based on 175 reviews
Great reader

This is by far the easiest reader for the buck. I also own the BlueDriver witch I love that to. But this thing just gets straight to the point. Soon as it arrived I had updated it. Really easy to do with a computer. Took it out and gave it a try and I was super impressed. If your looking to make sure your car is ready for inspection. It will do it in a matter of seconds. Same with reading check engine lights. A lot faster then my BlueDriver. All though this is a basic obd2 reader. Definitely worth the money. If your looking to clear a check engine light this could be it. I say could because any scanner can clear a light. But if the problem is not fixed it could come back on. I would recommend this to a beginner or even a expert. Can’t go wrong with this purchase.

Rashad Bradshaw

The epitome of perfection, works perfectly

Daryl Ives
Pretty Cool Tool

OK .. so I am a semi-decent dyi mechanic and have three kids with older model cars that are always needing some light end maintenance. When I have a “check engine” light on, I have always taken my car to AutoZone and they run the diagnostics for free and do a pretty good job helping me figure out what the issue may be. I have decided to step up my game a little and found how cheap these engine code diagnostic tools are, so I decided to buy the CGSULIT SC301 based on the high ratings and figured that I’d spend a little more than some of the cheaper models that run about $30. I have a 2015 VW Passat that was idling rough with a check engine light and this bad boy was easy to use and helped me diagnose the problem. After I fixed the problem, the check engine light remained on- and this machine was able to turn off the check engine light that I would have normally had to have turned off by the dealer. My first experience with this tool is positive so I am happy with the purchase. I can’t speak about the cheaper models (maybe they work too) .. but I love the easy self-explanatory color screen and the quality seems pretty good.

same functionality as FOXWELL NT301 with half price

I test it on both 2007 Lexus Es350 and 2010 Nissan 370z and it worked good.
only problem I saw was IM readiness on the car with 4 permanent error code it was green but other scanners show yellow for this matter. and in California if permanent error code exist Smog check will fail.
200 kilometer need to be drive and car need to have more than 15 warm start. and other scanner like Foxwell will check this then show green light until then it will be orange.
this device is exactly as FOXWELL NT301 even the number is look same SC301 but with half price I got it at the time.

Great diagnostic tool with realtime analysis and data capture

Recently had a check engine light appear on a 12yr old vehicle. It was intermittent so I had a local parts store read it for me. It went away and I didn't think anything of it. Weeks passed and it started again - this time it didn't go away. Knowing I would be doing more repair and testing on my own I decided to get a OBDII tester and after a bit of research and review, settled on the CGSULIT SC301. I was not disappointed. After repairing my first issue I was able to clear the error and view the I/M Readiness monitors to see when all systems came back online. Unfortunately a cascade of other issues arose - as often occurs with repairs uncovering peripheral issues - and the sc301 was able to guide me accurately through troubleshooting, identification, and repair. I'm certain that with this scanner I was able to easily save $700+ in repair charges by isolating the failed components and repairing/replacing them myself. I would definitely recommend this product!

Jonathan Aguirre
Facil de usar y sencillo

Es bueno tener este tipo de herramienta en casa por cualquier fallo en el vehículo


I like that this comes in a plastic package that can be easily opened and closed so that I have a way to store it in my car. I initially plugged this into my USB charger in my car and then plugged it into the connector in my car and it wouldn’t work. Then I found out in the manual that you shouldn’t connect it to both a power source and your car at the same time. The OBD connector in my car gives it enough power to run on it’s own without another power source. That should be in big bold letters on the front page of the instructions, especially for someone like me who has never used one of these. Once I figured this out, it connected to my car and gave me a reading. My engine light wasn’t on at the time so the reading was normal. I’ll have to update my review later when I have an engine light warning to use the monitor to read.

The screen isn’t the clearest to read, but it’s fine and I like the clear notifications of which things are good and bad. You need to have a list of all the different codes to know what you are looking at, but mostly you just need to know whichever one is showing up as needing attention. It’s good to have something like this so that you don’t have to just rely on someone else to tell you the truth about your car.

I tested this on a 2014 Prius and it works fine for me. I like having this if my engine light ever comes on during a road trip when I’m not able to get my car to a mechanic right away. At least I’ll know what the issue is. Once you use this once, it’s pretty easy to use.

Impressive scanner

I'll admit up front I'm not completely qualified to evaluate a tool like this. I got it to diagnose an error code on my wife's car, and I do know how to do that because of past experience with smaller, less-complex scanners. This one does so much more and is far more capable than those others I've used.

This scanner has a great, sharp multi-color display, and when you hook it up to your OBD2 port it displays a simplified menu to take you to the test or process you want to perform. It can read and record live data, view freeze frame data, read/erase DTCs (engine fault codes), turn off the CEL (check engine light), perform O2 monitoring test, on-board monitor test etc. And if you have a check engine light it will read the error codes and take you to a library of over 3000 codes to tell you what they mean. It will also let you turn off the check engine light when repairs are made.

This is a powerful tool, suitable for professional mechanics and knowledgeable home wrenchers. And at this price it is a bargain. The instructions can be a little sketchy for the home user, but mechanics won't be confused. If I had one suggestion, it would be for the scanner to be clad in rubber to stand up to the drops and hard use it will see in the professional environment.

This scanner gets 5 stars from me.

He had a SnapOn scanner for years and loved it. This is on par with the scanner ...

My dad was a mechanic for over 20 years and still works on them for time to time. He had a SnapOn scanner for years and loved it. This is on par with the scanner he had for over 10 years. We got this SC301 to replace that SnapOn scanner, it does everything the SnapOn one did and everything that is in the details in the description. It is easy to update and comes with a cord to update it with. It is very easy to use as well. We highly recommend this scanner.

Not Just a Code Reader!

Be warned this is not your typical code reader. This one gets into the the technical stuff. A lot I have no idea what I was looking at. I learned to use a few of the functions from uTube videos. I learned enough to find out I had a plugged EGR valve and I have to 02 sensors that are bad. I have the shop manuals for my car and the more I study this instrument the more I like it. The best feature I think is the graphing. Watching the operation of the 02 sensors on the graph mode enabled me to locate the bad sensors in a couple of minutes. If you are willing to take the time and learn how to use this scanner, you'll be glad you bought it. I'm very pleased with my purchase. However when you order this, order a case and the extention ribbon. You will want to protect this little jewel. The extention ribbon allows you to hook up to your automobile computer and be able to sit comfortably in the driver's seat while you are doing the test instead of being hunched under the steering wheel. Great scanner, great price!

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