Autozond: OBD2 scanner ELM327

Android|Dev

About this app

Check Engine light on? Connect an ELM327 adapter to your car's diagnostic port. Autozond reads fault codes and shows their descriptions. The result is saved to your history. Add a note, then compare it with a new scan after a repair. If you already know the code, look it up without connecting to the car.

Fault codes and scan history
• Read confirmed, pending and permanent codes where supported by the vehicle.
• Built-in offline code reference in English, with Russian descriptions for some codes. Other translations need an internet connection.
• Open saved scans with their date, vehicle and notes without an adapter or internet connection.
• Compare two scans of the same car to see new, recurring and no-longer-detected codes. Categories that could not be read are shown separately.
• Clear fault codes after a warning. Clearing a code does not fix the underlying fault.

Live data
Watch RPM, coolant temperature, fuel trims and other values reported by the ECU. Choose parameters for the graph and arrange your dashboard. Full-screen and head-up display modes are available. Freeze Frame shows the readings stored by the vehicle when a fault was recorded.

Mileage checks before buying a used car
On supported vehicles, compare available mileage readings from different control units and fault records. A mismatch is a reason to check the vehicle's history and seek a professional inspection. It does not prove odometer tampering; matching readings do not guarantee genuine mileage either. Unverified sources are labelled in the app.

Trips and tools
The trip computer estimates fuel consumption and trip cost in RUB. The trip log stores journeys with graphs and CSV export; recording can continue in the background. Acceleration tests and step-by-step service interval reset guides are also available. You follow the reset procedures manually; the app does not send a service-reset command to the ECU.

Free features
Code lookup, standard fault-code reading and clearing, scan history and comparison, the trip computer, trip log, acceleration tests, service guides and demo mode. The graph and dashboard are available with limits.

What Pro adds
Extended fault-code and parameter reads from individual modules, additional mileage sources, the full diagnostic report and PDF export, plus expanded graph and dashboard options. Pro is a one-time purchase with no subscription. The app has no ads. Buying Pro cannot add functions that the vehicle does not support.

Connection and compatibility
You need a separate ELM327 adapter using Bluetooth, Bluetooth LE or Wi-Fi, and a vehicle that supports OBD-II. Available data depends on the model, year, equipment, control units and adapter quality. Access to ABS, airbags, transmission and other systems requires support for the particular module; standard OBD-II does not guarantee access to every system.

Try the demo before buying an adapter: it uses fictional Renault data to show how the screens work. Demo scans and trips are kept separate from real records. Connection guidance shows which stage needs attention. Choose from 15 interface languages in settings.

What’s new

• Scan history: saved codes, notes and comparison of two scans of the same car. View results without an adapter.
• First-launch and connection guidance. Fixed returning from code lookup to Diagnostics. Demo records stay separate from real data.
• Choose from 15 interface languages, with localized sensor names and number formats.
• Experimental knock instrument: graphs and ECU counter events where data is available. Counter changes do not confirm physical engine knock.