OBD Scanner Auto

OBD Scanner Auto helps you check your car with an ELM327 adapter, without complex menus or confusing commands. Connect via Bluetooth, Wi-Fi or USB to see trouble codes, system readiness, freeze-frame data, responding control modules and next steps.

Use it for DIY diagnostics, Check Engine monitoring and checks after repairs. Results stay on your phone for comparison or sharing with a mechanic.

CLEAR OBD2 DIAGNOSTICS

- Read confirmed, pending and permanent OBD-II trouble codes.
- Understand DTC meanings, possible causes and what to check first.
- Clear standard engine codes with confirmation and a follow-up scan.
- Check OBD readiness and Check Engine status.
- Read VIN, identifiers and available ECU data.
- View freeze-frame readings: RPM, temperature, speed, load and more.
- See scan completeness, with confirmed findings separated from assumptions.

MORE VEHICLE INFORMATION

The app safely searches for control modules over CAN and includes them only when a valid response is received. Firmware signatures help identify possible ECU profiles. Matches remain candidates until enough data is available.

Extended discovery is available for GWM and Haval. Additional identification methods cover Toyota, Lexus, Hyundai, Kia, Volkswagen, Audi, Skoda, Ford, Nissan, Infiniti, Honda, Acura, Mazda, Subaru, Jeep, Dodge, Chrysler and GM.

If ABS, airbags, transmission or body modules do not respond, the app shows "not checked" rather than reporting them as healthy.

LIVE DATA AND GRAPHS

Monitor supported readings: RPM, speed, temperatures, engine load, MAF/MAP, fuel pressure, throttle position, ignition timing, fuel trims, oxygen sensors, lambda, catalyst data, ECU voltage and other PIDs.

Select a reading to see its graph, minimum, average and maximum. Save a log for review after your trip.

STEP-BY-STEP CHECKS

Guided checks help assess power supply, engine warm-up, fuel mixture, oxygen sensors and the catalytic converter. The app explains the operating conditions, collects stable readings and interprets the results.

REPORTS AND HISTORY

- Automatically save each completed scan.
- Compare new, recurring and resolved codes.
- Keep vehicle scan history in your garage.
- Export reports as PDF, Markdown and JSON.
- Share results with a mechanic or vehicle owner.
- Save live-data logs for further analysis.

RELIABLE ELM327 CONNECTION

Compatible ELM327 adapters are supported via Bluetooth, Wi-Fi and USB Serial. The app checks adapter capabilities, connection quality, voltage and response time, retries temporarily failed requests and explains connection problems.

For reliable diagnostics, use a quality ELM327 v1.5, OBDLink, Vgate or another compatible adapter. Cheap clones labelled v2.1 may not support long responses or additional control modules.

COMPATIBILITY

Standard OBD-II diagnostics work with compatible vehicles from Lada, Haval, Chery, Geely, Toyota, Lexus, Kia, Hyundai, Volkswagen, Skoda, Audi, Renault, Nissan, Infiniti, Ford, Mazda, BMW, Honda, Subaru and other makes. Available readings, identifiers and control modules depend on the vehicle, model year, ECU configuration and adapter.

OBD Scanner Auto does not replace a professional workshop inspection. A trouble code guides diagnosis but does not prove that a specific part has failed. Do not use your phone while driving.