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Red Code Reader

Ratings & Reviews for CRAFTSMAN Red Code Reader

3.4
157
Review
 3.4 out of 5
157 Reviews


54% Recommend this product

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.
157 Customer Reviews

This works very well would recommend

Would Recommend

Used it to clear codes on my car and diagnose it

March 3, 2026
Verified Purchaser
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Poor instructions and website.

Would Not Recommend

The first thing the instructions tell you to do is to connect you OBDII reader to your computer and made sure the reader is updated, however, there isn't any link to do this. This is not a good start.

January 29, 2026

From craftsman.com

Response from Craftsman

Hello valued Craftsman customer, I appreciate your feedback on the CRAFTSMAN® Auto OBD2 Code Reader, and I'm sorry to hear there is no link to update ...

CraftsmanJanuary 29, 2026

This product sucks

Would Not Recommend

[This review was collected as part of a promotion.] Can update no update this product sucks I wish I never bought this craftsman do better I own so many of your tools this obd sucks

January 20, 2026

From craftsman.com

Response from Craftsman

Hello Valued Customer, I appreciate your feedback on the Auto OBD2 Code Reader and I'm sorry to hear you are having issues. Your satisfaction is our t...

CraftsmanJanuary 21, 2026

Great price

Would Recommend

Good product

December 2, 2025
Verified Purchaser
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Best Code Reader

Would Recommend

Awesome Code Reader, best one yet.

October 1, 2025
Verified Purchaser
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Dependable and accurate

Would Recommend

Easy to use and hasn't lead me wrong yet. Use this on my vehicles, my friend's vehicles and vehicles that I am working on.

August 13, 2025
Verified Purchaser
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Software updates?

Would Recommend

Have had this for over four year. Works fairly well for codes but other functions less so. Promised software updates don't seem to exist.

August 2, 2025

From craftsman.com

10/10

Would Recommend

[This review was collected as part of a promotion.] I’ve been using the Craftsman OBD2 Code Reader for a few weeks now, and it has quickly become an essential tool in my garage.

July 31, 2025

From craftsman.com

OK, would pick a different model if got a do-over

Would Not Recommend

Works, but display text is very small, and was unable to identify a code for a 2014 Chevy Volt. I updated, but it said that my software was already up to date. Mechanic's scanner could read the code as a battery problem.

June 9, 2025
Verified Purchaser
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Response from Craftsman

Hello Jack and thank you for your feedback regarding the CMMT77693 CRAFTSMAN Red Code Reader. I am sorry to hear you are unhappy with this product an...

CraftsmanApril 8, 2026

Craftsman

Software Upgrade Not Compitable on a mac

Would Not Recommend

Software Upgrade not compatible on a Mac ... I will return

April 5, 2025

From craftsman.com

Response from CRAFTSMAN

Hello DavidZki, I appreciate your feedback on the CMMT77693 OBD2 Code Reader and I'm sorry to hear it isn't compatible with a Mac. Your satisfaction i...

CRAFTSMANApril 9, 2025

Garbage

Would Not Recommend

Not worth the time! I've tried 4 times and 2 hours of researching and seeing if there is something I'm missing as far as update the software. Every time I plug it in "Installashield " comes up supposedly downloads a bunch of stuff on my computer, then when I click on it to open it up it wants to go through the whole process of downloading the software again and again like a vicious cycle. It won't let you open the file to update software.

January 26, 2025

From craftsman.com

Response from Social Media

Hello, We appreciate your feedback and we are sorry to hear the issues that you are having with your unit. We have reached out to you via email at the...

Social MediaJanuary 29, 2025

EXTREMELY disappointed!

Would Not Recommend

Finally got it to update after 4 tries. No usable printed, onboard or online instructions, other than "turn key to on, plug unit in"! I expected to download data and graphs to computer to print out, but took me forever digging through their "update software" to find the 'LSDC Driver Setup' get the stupid thing to talk to the computer.. Then I found the 'Scanprint.exe' file buried in there, and created a shortcut to desktop to start that. Took the piece of garbage out to truck, and it did read a ...

December 8, 2024

From craftsman.com

Response from CS

Hello. Thank you for taking the time to provide your feedback. I'm sorry you weren't pleased with the CMMT77693. Your feedback is valuable as we ta...

CSDecember 11, 2024

Lousy sparse manual, wonky updates.

Software update is EXTREMELY wonky, but I got it done the 4th time. Just don't remember exactly how I stumbled into it. A better step-by-step procedure SHOULD be in the extremely sparse user manual, or at LEAST on this site, and it shouldn't be difficult to do. The user manual could also use more info. It's basically "Turn your key to on, plug in"...and you're on your own. Does it do any drivetime data reading? What mode, if so? Why isn't the instructions programmed in and able to print out via ...

December 7, 2024

From craftsman.com

Response from CS

Hello. Thank you for taking the time to provide your feedback. I'm sorry you weren't pleased with the CMMT77693. Your feedback is valuable as we tak...

CSDecember 11, 2024

Can't update software

I cannot update the software for this CMMT77693 code reader. I can usually follow directions well, but this does not seem to be "user error". Am I missing something. Just out of the box and purchased today.

September 1, 2024

From craftsman.com

Response from CRAFTSMAN

Hello Shane A, I appreciate your feedback on the CMMT77693 OBD2 Code Reader and I'm sorry to hear you are having troubles updating it Attached is the ...

CRAFTSMANSeptember 4, 2024

Functional, easy-to-use tool.

Would Recommend

It lives up to its name as a code reader. The tool is very easy to use and has plenty of help menus. It detected a P0300 Misfire DTC and a P0446 EVAP code on my vehicle. It also clears DYCs, resets the I/M flags. It graphs data PIDs as well. It isn't a rugged tool designed for everyday shop use, but it is great for the DIY mechanic or even as a second diagnostic tool in the shop. Easy to check for updates online.

August 20, 2024

From craftsman.com

Would Recommend

This product is great it works on all 5 of my vehicles from my 02 suburban to my 21 Camry perfectly highly recommended it.

July 23, 2024

From craftsman.com