Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers are divided on this diagnostic tool. Many praise its affordability, ease of use, and ability to read codes, clear check engine lights, and display live engine data without requiring a smartphone—helping them avoid costly repairs. However, a substantial group reports serious frustration with software updates and registration, citing serial number validation errors, broken download links, and Windows-only support that leaves other users stranded. Some note build quality feels cheap, with USB connection issues and small display text. Despite strong capabilities, unresolved software problems have led several customers to regret their purchase.
Customer review summary generated by AI, including incentivized reviews.Garbage
Would Not RecommendScanner works well but print function is junk. I downloaded the software update as instructed but scanner says I need to use a newer version of update tool. The print function is very important with OBD2 scanners. Very Frustrating!!!
From craftsman.com
Total crap.
Would Not RecommendSoftware update is FUBAR! Keeps asking for a 'Register Code'. I tried every number on my Lowe'sw receipt. Every number on the box. No go! Nothing works. What is this magical 'Register Code'?
Ob2 Scanner
Would RecommendAwesome on2 scanner to use for your car and run diagnostic.
From craftsman.com
Will not work
Would Not Recommendwill not work on suv but will work on my old 2001 ford. Would love to let you help me. Or get my money back. So I will not say any thing bad or good now help.
From craftsman.com
Crap
Would Not RecommendAbsolutely no instructions on how to operate said scanner tool. No additional instructions on line. Not even vague instructions describing what button do what. Garbage scanner.
From craftsman.com
Hi – Thank you for leaving your feedback from your experience with this unit. I am sorry to hear that you’re having issues with your unit after such a...
Easy to use out of the box. even went to update it just to try it out no problems what so ever.
wont work
Would Not RecommendThis scanner will only work on half the vehicles i put it on. I wont update and i wont print. I have emailed customer support and got no response
Hi –
Thank you for leaving your feedback from your experience with this unit. I am sorry to hear that you’re having issues with your unit after ...

does not work
Would Not RecommendBought this product got it home it updated fine when i plug it in it will not connect says error trying to use it on a 2014 jeep cherokee and it says 1 if tool's OBD11 connector is connected to the vehicle's DLC 2if the ignition is on 3Verify that the vehicle is OBD11 is compliant
From craftsman.com
Hi – Thank you for leaving your feedback from your experience with this unit. I am sorry to hear that you’re having issues with your unit after such a...
For the price, best in it's class
Would Recommend[This review was collected as part of a promotion.] For being a cheaper reader, I'm fully impressed with the features and and how well it performs. For the diy mechanic, this is a must have.
From craftsman.com
upgrade
Would Not Recommendinfo not very helpful. can't get it to upgrade. I downloaded and registered files and nothing
From craftsman.com
Hi Colean39, Thank you for providing your feedback on the CMMT77693. We're sorry to hear of the trouble you are having. We would appreciate the chanc...
Does not work... period!
Would Not RecommendBought the scanner, went straight home and updated the software with no problems... however, it only works in the vehicle if you use the USB plug. ( It should power up from the OBD2 but doesn't.) So I use the USB plug provided, power it up and go to diagnostic... and it says Entering System but never does.
From craftsman.com
Hi – Thank you for leaving your feedback from your experience with this unit. I am sorry to hear that you’re having issues with your unit after such a...
UPDATE NOT supported
Would Not Recommenddown loaded the update.. pc says update is not supported for updating tool ... if i had known this i would not have bought this home style code reader.. always thought of craftsman as a quality tool
From craftsman.com
Obd2 reader
Would Not RecommendI can't get it to update at all but overall good product
From craftsman.com
Nice Reader
Would RecommendBeing the nerd I am, I plugged this in as soon as I got out of the store. Awesome information; I was totally impressed until... I brought it home and plugged it into my laptop to see if there was an update. Review the following screen-shots for what I saw. After changing the defective USB that came with the unit, poof! all problems vanished.
From craftsman.com
Had to update to possibly get it to work. Couldn't download software update at first, I finally did update hasn't worked. Used two brand computers to download the software and still haven't got it to work. I am returning the item when I get back to Lowes
Verified Purchaser
good little scanner
Great scan tool. Tells exactly what is going on with the code. No need to look abything up it will tell you on the screen
Works, but cant update it
Would Not Recommendworks, but will not update. when I try to update it, I get a message that says product unsold
From craftsman.com
Hi – Thank you for leaving your feedback from your experience with this unit. I am sorry to hear that you’re having issues with your unit after such a...

Hello, We appreciate your feedback on the CMMT77693 and are sorry to hear about the issue you are having with your product. This is not the kin...