General

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Author

• Josh McIntyre

Website

• jmcintyre.net

Overview

• ObdCmd provides a command-line utility for dumping OBDII diagnostic information

Development

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Git Workflow

• master for releases (merge development)
• development for bugfixes and new features

Building

• make build Build the utility
• make clean Clean the build directory

Features

• Dump all currently available OBDII diagnostic information
• NOTE: The utility may take a moment to initialize settings on startup

Requirements

• Requires a connected ELM327 device on a virtual serial port

Platforms

• Windows
• Linux
• Raspberry Pi

Usage

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CLI Usage

• Run obdcmd.exe with the serial port number specified. Ex: obdcmd.exe COM3
• Omit arguments after the port to enter the interactive menu
• Or, specify <command> or all after the port to enter polling mode
• Enter help to show available commands
• Enter dumpall to fetch and display current diagnostic information
• Enter <command> to dump just one diagnostic item
• Enter quit to exit the utility

Diagnostic Information

• Modern vehicles use OBDII for diagnostic codes.
• This tool should provide most standard OBDII codes.
• Pre-1996 cars may use OBDI standards that vary by manufacturer, not supported by this tool
• Many OBDI codes can be pulled by placing a jumper wire across specified ports and watching check engine light flashes
• Plugging these codes into a search engine or code search application for information pertaining to your project!