WORKS WITH ANY ELM327 OBD-II ADAPTER
Your car's
check-engine light,
finally explained.
Plug in a Bluetooth or Wi-Fi OBD-II scanner and read trouble codes, live sensor data, and full-throttle performance runs — with plain-language causes and fixes for every fault.
7000+
Fault codes
50ms
Live refresh
4.8★
App rating
Dashboard
CONNECTED
RPM ×1000
Speed
72 km/h
Coolant
89 °C
94
Vehicle health
No active fault codes
ELM327•BLUETOOTH OBD-II•WI-FI OBD-II•ISO 15765 CAN•KWP2000•MODE 06•VIN DECODE•ELM327•BLUETOOTH OBD-II•WI-FI OBD-II•ISO 15765 CAN•KWP2000•MODE 06•VIN DECODE•
EVERYTHING UNDER THE HOOD
One app, the whole diagnostic story
From a single trouble code to a full performance session — Carnix turns raw OBD-II data into decisions you can act on.
Trouble code diagnostics
Read and clear DTCs across all 7000+ generic and manufacturer codes, with severity and system context.
Causes & fixes
Every fault comes with likely causes, repair steps, and rough part costs — written in plain language.
Live data stream
Watch RPM, boost, coolant, fuel trims and dozens of PIDs update in real time on custom dashboards.
Freeze frame
Capture the exact sensor snapshot from the moment a fault was stored to reproduce the problem.
Vehicle health score
One number that folds readiness monitors, active codes and live vitals into an at-a-glance status.
History & event log
Every scan, run and connection is saved and synced so you can track a car over months, not minutes.
Connected in under a minute
1
Plug in an adapter
Any ELM327 OBD-II dongle — Bluetooth or Wi-Fi — into the port under your dash.
2
Pair the app
Carnix finds the adapter, decodes your VIN and identifies the vehicle automatically.
3
Read everything
Codes, live data and performance runs are ready the moment the ignition is on.
PERFORMANCE MODE
Turn any road into a test track
Record 0–100 and 100–200 km/h sprints straight from your ECU, with incline-corrected timing, live speed traces, and a full session history you can compare run to run.
✓
ECU-sourced speed — no GPS lag, timed straight from the vehicle bus.
✓
Incline correction — runs are normalised so uphill sprints stay comparable.
✓
Session history — save every run and stack traces side by side.
0 – 100 km/h
BEST RUN
6.42s
218
Top km/h
3.1
100–200 est
1.4%
Incline
Start free. Go deep when you need to.
Free
$0
Read codes, forever
Download free✓Trouble code diagnostic
✕Possible causes & fixes
✕Live data stream
✕0–100 · 100–200 metrics
✕Deep analysis · codes + live
✕Freeze frame
✕Vehicle health score
✕Diagnostic history
✕Event log
MOST POPULAR
Pro
$4.99/mo
Billed 59.99 / year · cancel anytime
Start Pro trial✓Trouble code diagnostic
✓Possible causes & fixes
✓Live data stream
✓0–100 · 100–200 metrics
✓Deep analysis · codes + live
✓Freeze frame
✓Vehicle health score
✓Diagnostic history
✓Event log
Questions, answered
What hardware do I need?
–
Any standard ELM327-based OBD-II adapter over Bluetooth or Wi-Fi. Most cars sold after 2001 (petrol) or 2004 (diesel) have a compatible port.
Which cars are supported?
+
Does it work offline?
+
Can I clear check-engine lights?
+
What does Pro unlock?
+
Stop guessing. Start diagnosing.
Download Carnix and know exactly what your car is telling you.