The quick answer.
Choose an OBD2 scanner by the systems and jobs you need. A basic code reader covers engine and emissions codes on cars after 1996. A step-up handheld such as the Topdon ArtiLink600 adds ABS and SRS diagnostics and service resets, and a four-system tool such as the ArtiDiag500 BMS adds transmission coverage and battery registration. Confirm your make, model and year before buying.
Start with the job
Write down what you want the tool to do. Reading a check-engine code and clearing it is a different job from diagnosing an ABS or airbag light, resetting an oil-service reminder or registering a new battery. The job decides how much scanner you need.
Basic reader or step-up handheld
OBD2 is a standard interface on most cars built after 1996, and a basic reader covers engine and emissions codes. A step-up handheld such as the Topdon ArtiLink600 lists all ten OBD2 modes plus ABS and SRS diagnostics for 42 car brands and oil, SAS and BMS reset services, so it suits owners who go further than codes.
System coverage and battery service
If you want transmission as well as engine, ABS and airbag diagnostics, look at a four-system tool. Topdon lists the ArtiDiag500 BMS with those four systems, AutoVIN and BMS resets across more than 70 brands. Always check that your exact make, model and year are supported.
Plug-in devices are a different category
Some OBD2 devices do a single job rather than scanning. The Topdon AFM/DFM Disabler, for example, plugs into the OBD2 port of supported GM V6 and V8 vehicles to keep the engine in full-cylinder mode. Treat these as accessories and check the vehicle compatibility list.
Treat codes as a starting point
A fault code identifies a system or circuit to investigate; it does not prove a particular part has failed. Use live data and freeze frame to see what was happening, and confirm a repair with a re-scan.
Keep building your know-how.
Explore relevant brands.
Compare the right equipment for the job, then check current offer details.
Your questions, answered.
Will an OBD2 scanner work on any car?
OBD2 is standard on most cars built after 1996, but brand-specific functions such as ABS, airbag and service resets vary by make, model and year. Check the maker's coverage list.
Do I need a scanner with service resets?
Only if you plan to reset oil, steering-angle or battery-management reminders yourself. A basic reader does not include them.
Does a code tell me which part to replace?
No. A code points to a system or circuit; confirm with live data and further checks before replacing parts.
Sources & further reading.
Source information checked October 19, 2026. Product examples are identified by model; the recommendations and practical comparisons are CarRundown’s editorial analysis.
