Recommended Diagnostic Tools

Find the right OBD-II scanner or diagnostic tool for your needs and budget. We review and compare the most popular options.

Best OBD-II Scanners

Compare the best OBD-II scanners for DIY car diagnostics. Read codes, view live data, and diagnose problems from your phone or a handheld device.

5 products reviewedView Guide →

Best Budget OBD-II Code Readers

Affordable OBD-II code readers under $50. Read and clear check engine light codes without breaking the bank.

4 products reviewedView Guide →

Best Professional Diagnostic Tools

Professional-grade automotive diagnostic tools for serious DIYers and shop technicians. Full system scanning, bi-directional control, and advanced features.

4 products reviewedView Guide →