Easily diagnose your car problem with code readers and diagnostic tools from AutoZone. With our variety of code readers, you can find the perfect one that will accurately operate for your vehicle.

Online shopping for Code Readers & Scan Tools - Diagnostic, Test & Measurement Tools from a great selection at Automotive Store.

Nov 19, 2025 · Did your vehicle's check-engine light just pop on? An OBD-II scanner can point you in the right direction—and potentially save you a bundle. This article was updated in …

O'Reilly Auto Parts has the parts and accessories, tools, and the knowledge you may need to repair your vehicle the right way. Shop O'Reilly Auto Parts online.

Sep 15, 2025 · Get the read on your car issues with an OBD-II code reader. I tried out some of the top brands on the market to find the best one for your needs.

Jul 22, 2025 · Modern cars are essentially computers on wheels, with sensors constantly sending data to help your engine run smoothly. When something goes wrong, your car stores error …

Jul 18, 2025 · This is a car code reader or diagnostic tool that allows you to communicate with the engine’s computer about what’s wrong and needs to be fixed. This system has been in use for …

Feb 21, 2025 · The best car code readers will tell you if there are any issues with your vehicle before the mechanic does. We researched to help you find the best one.

Diagnose your car's issues at home with the best OBD-II scanners you can buy right now.

Computer car readers are essential tools for diagnosing and monitoring your vehicle's performance. These devices connect seamlessly to your car's onboard computer, providing …