o3DIAG

Diagnostic application for vehicles with OBD-II interface using an ELM327 adapter. Connection, data reading, and fault code interpretation.

★★★★★

4.5(6 ratings)

• Connection Control. Selection of communication port and baud rate. Establishing and closing connection with the ELM327 adapter. Automatic adapter initialization using specific AT commands.
• Real-time Data Reading. Monitoring of engine parameters such as RPM, vehicle speed, coolant temperature, and engine load. Automatic conversion of hexadecimal responses to understandable physical values.
• DTC Diagnostic Codes. Reading of fault codes stored in the engine control unit. Clearing error codes using a specific clear command for the OBD-II protocol.
• P-Code Translation. Interpretation of fault codes via an integrated database. Display of technical descriptions instead of raw numerical codes.
• Log Interface. Scrollable log window with complete communication history with the adapter. Timestamps for each communication entry since Beta version 1.5.
• Log Cleaning. Function to completely clear the communication history. Automatic resetting of program information after cleaning.
• Information Section. Dedicated area for technical program details and usage warnings. Information about versions and compatibility features.
• Parameter Configuration. Custom adjustment of serial communication speeds. Selection of available COM ports on the system.
• PID Data Interpretation. Processing of parameter identifiers according to OBD-II standards. Mathematical conversion of hexadecimal values to conventional measurement units.
• Protocol Handling. Support for multiple OBD-II communication protocols. Automatic vehicle protocol detection during the initialization phase.
• Status Monitoring. Continuous verification of the connection with the vehicle. Visual indication of the communication link status.
• AT Command Management. Sending and receiving configuration commands for the ELM327 adapter. Implementation of standard initialization sequences for diagnostics.

Development started in 2023 using the Python language. Created by developers specialized in vehicle diagnostic systems. Implementation based on technical OBD-II communication standards and automobile manufacturer specifications.

Alternatives to o3DIAG: