Every car owner should have some way to read OBD-II codes. Auto parts stores will read them free, but having your own tool means you can check any time.
Bluetooth adapters + smartphone app ($10–$30) — best for most people
- OBDLink MX+ (~$30) — best overall, works iOS and Android
- Veepeak Mini Bluetooth (~$15) — best budget option for Android
Best free apps: Car Scanner ELM OBD2, Torque Lite (Android), OBD Auto Doctor.
Standalone handheld scanners ($30–$120)
- Foxwell NT301 (~$40) — best value standalone, reads codes, live data, readiness monitors
- BlueDriver Bluetooth Pro (~$120) — premium option with manufacturer-specific codes
Mid-range scanners ($100–$400) — for ABS/airbag codes
Standard OBD2 covers engine codes only. Autel MD808 Pro (~$150) reads all systems including ABS, SRS, and transmission codes.
What actually matters when buying
- iOS vs Android: Many cheap adapters are Android-only. OBDLink MX+ is the safest iOS choice.
- ABS/airbag coverage: C and B codes require a more advanced scanner than standard OBD2 tools.
- Live data: Confirm your tool supports real-time sensor readings if you want to diagnose beyond just reading codes.