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About DiagAuto — Diagnostic OBD2

DiagAuto turns your smartphone into a professional OBD2 diagnostic scanner — 100% free, no subscription, no in-app purchases.
Check engine light on? DiagAuto identifies the fault, explains the cause and advises you on the repair. Clear the check engine light directly from your phone, just like a mechanic.

🔍 FULL ENGINE DIAGNOSTIC
Read confirmed and pending fault codes
Automatic manufacturer identification via VIN
Detailed explanation of each fault in your language
Possible causes and repair advice
Clear the check engine light
Database of 5,900 DTC codes P, B, C, U

📤 HISTORY & SHARING
Automatic saving of each diagnostic
Full history of your past diagnostics
Share report by SMS, email or WhatsApp
Send the report directly to your mechanic

📡 REAL-TIME DATA
Engine RPM, temperature, engine load
Speed, turbo pressure, fuel trim
15 configurable engine parameters live

📚 DTC CODE DATABASE
5,900+ codes with explanations in French and English
Search by code or keyword
Available offline, no internet required

🔧 COMPATIBILITY
ELM327 Bluetooth LE dongles (BLE 4.0+)
All petrol vehicles ≥ 2001, diesel ≥ 2004
Compatible EOBD / OBD2 / OBD-II
Tested on Renault, Peugeot, Citroën, Ford, Toyota, BMW and more

🎬 DEMO MODE
No OBD2 dongle yet? Try all DiagAuto features in demo mode, no hardware required.

💬 FREE SUPPORT
WhatsApp support
Personalized advice from the OBD2.com team

🌍 AVAILABLE IN 4 LANGUAGES
Français, English, Español, Italiano.
✅ 100% FREE — No subscription. No in-app purchases. Email login required for activation.
Developed by OBD2.com — automotive diagnostic specialist.
obd2.com | obd2.fr