AutoCheck OBD

Read and clear check-engine codes, watch live engine data, and share full diagnostic reports — from your iPhone with any ELM327 Wi-Fi or Bluetooth OBD2 adapter.

AutoCheck OBD turns your iPhone into a professional-grade OBD-II scanner. Connect any ELM327-compatible adapter over Wi-Fi or Bluetooth and see what your car's computer is really doing — in real time.

DIAGNOSE THE CHECK ENGINE LIGHT • Read and clear diagnostic trouble codes (DTCs) • Clear, plain-language descriptions with likely causes and symptoms • Freeze-frame data captured at the moment the fault occurred

LIVE ENGINE DATA • RPM, speed, coolant temperature, engine load and throttle position • Fuel level, intake air temperature, MAF, timing advance and more • A clean, easy-to-read dashboard that updates as you drive

BUILT FOR EVERY DRIVER • Works with inexpensive ELM327 Wi-Fi and Bluetooth adapters • Share a complete diagnostic report as a PDF • Demo Mode lets you explore every feature with no adapter connected • Available in 11 languages, matching your device automatically

Whether you're inspecting a used car, chasing down a warning light, or just curious about what's under the hood, AutoCheck OBD gives you real answers — no expensive shop tools required.

Note: Requires an ELM327-compatible OBD-II adapter (sold separately).