OBDAI: OBD2 AI Car Scanner

Ontario Analytics

In-app purchases

About this app

Turn any ELM327 adapter into an intelligent diagnostic system. OBDAI combines live vehicle data with ARIA, an automotive reasoning agent that explains results in plain English and creates professional reports you can share with a mechanic, customer, or buyer.

MONITOR TESTS (MODE 6)

Read the self-tests your engine computer runs on the catalyst, O2 sensors, EVAP, EGR, misfire systems, and more. OBDAI decodes the vehicle's real measurements with its own pass/fail limits, organized by ECU. No invented health scores.

TRENDS ACROSS DRIVES

ARIA remembers Monitor Test results with each inspection. Ask whether a catalyst or sensor test is getting worse and ARIA compares the same test across your recorded drives.

DRIVE-CYCLE INTELLIGENCE

OBDAI reads in-use performance and since-clear counters. ARIA can explain whether the evidence comes from one new drive cycle or thousands of monitoring opportunities—and flag the near-zero since-clear history that can indicate recently erased codes during a used-car inspection.

HANDS-FREE ARIA

Talk continuously while ARIA listens, answers aloud, and listens again. Push-to-talk is also available, with recognition tuned for automotive vocabulary.

PHOTO-AWARE DIAGNOSTICS

Send up to five photos per message: warning lights, VIN plates, leaks, parts, invoices, multimeter readings, or scope waveforms. ARIA can ask for a photo when seeing the problem would help.

ARIA REMEMBERS

Ask follow-up questions without repeating the story. Vehicle memory preserves prior findings and inspections. ARIA can combine live telematics, freeze-frame data, photos, and history.

PROFESSIONAL DIAGNOSTIC REPORTS

Create AI-authored inspection documents with findings, recommendations, next steps, and automatic vehicle identification.

FREE OBD2 SCANNER

• 220 live parameters from SAE J1979DA
• Read and clear Stored, Pending, and Permanent DTCs
• Freeze-frame data and emissions readiness
• EV/hybrid battery, charge, and motor data
• Diesel NOx, DPF, SCR, DEF, and AECD data
• Custom dashboards and trip analysis

ARIA ON THE WEB (PRO)

Use ARIA from a browser at dashboard.obdai.app. Your vehicle history and context follow you even when the car is not connected.

COMPATIBILITY

For 1996+ gasoline vehicles, 2004+ diesel vehicles, and EV/hybrid vehicles that expose SAE J1979 data. Works with ELM327 Bluetooth, Wi-Fi, and USB adapters across CAN, ISO 15765, KWP2000, ISO 9141, and J1850.

No ads. No data resale. Encrypted cloud sync.

Available across Android, iOS, and Windows.

obdai.app | [e-mail]

Ratings and reviews

I must admit I never thought about adding an ai system to the app, very innovative. App is well thought out, graphically pleasing, and easy to use by non-automotively inclined users. I recommend this app for all cars. However there is 1 little graphical design issue. I recommend hiding the navigation and notification bars while the app is open. I had this issue with some of my early apps. It is an easy fix.

Error 404 everywhere. Nothing worked.

a long waist of time. I can't change from Celsius to fahrenheit and connection issues are frequent.

What’s new

NEW: Faster live data - up to six sensor readings per exchange with the OBDAI GEN2 adapter. Plus a big accuracy release: emissions readiness now checks every computer in your car before calling it test-ready, ARIA sees fault codes and sensor data from every module, the fault-code library grew to all 19,216 standard codes, and a new Metric/US units setting converts every list and gauge. Fixed: chat errors after double-tapping send. Ready for Android 16.