C4LINK

Connect. Diagnose. Drive.

Track / drift Sign in

Read your car's live data and fault codes in the browser

Pair a Bluetooth LE OBD2 adapter, watch engine data stream in real time, and see exactly what your check engine or ABS light is trying to tell you — in plain English, with likely causes and what to check first.

Adapter compatibility

Browsers can only talk to Bluetooth Low Energy adapters — Vgate iCar Pro BLE, LELink, vLinker and similar. The cheap Bluetooth Classic ELM327 dongles are invisible to every browser.

This browser has no Web Bluetooth support (iOS Safari never does). Use Chrome or Edge on desktop or Android — or explore everything in demo mode.

Demo scenario