Vehicle Diagnostics
A diagnostic application gives engineers a repeatable way to execute ECU services and interpret responses. I build focused Python or Qt tools around your UDS workflows, supplied ODX or PDX data, and available communication interfaces, with explicit connection, error, and result handling.
Discuss Diagnostic Application DevelopmentProblems I can investigate
Build purpose-built software around the ECU diagnostic workflows your team needs to execute, interpret, and repeat.
Investigate communication failures by examining the diagnostic path, transport behavior, diagnostic session, and available evidence.
Trace requests that do not complete as expected across service flow, timing, diagnostic data, and ECU responses.
Analyze negative-response codes against the intended diagnostic flow and document evidence without assuming ECU behavior.
What I can help with
Define the operator flow from ECU selection and connection through service execution to result inspection. Use a focused Python or Qt interface with visible disconnected, waiting, failed, and completed states.
Resolve the applicable ODX or PDX definitions and display interpreted DID or DTC results alongside the raw request and response needed for troubleshooting.
Connect the application to its ISO-TP or DoIP interface, manage loss of communication, and expose timeouts without treating missing data as a valid result.
Exercise complete workflows such as connecting, selecting a supported service, reading a value, and recording the result. Agree protected-service prerequisites before including those actions.
What to send
The available ECU, communication setup, diagnostic access, and expected workflow.
Diagnostic-data descriptions used to define services, identifiers, parameters, or expected values.
Packaged diagnostic data available for application development or investigation.
Timestamped communication evidence for examining requests, responses, and surrounding activity.
Project configuration and assets that should be extended, inspected, or connected to the application.
Observed symptoms, reproduction steps, context, and expected behavior.
How the analysis works
Identify the engineers using the tool, available ECU variants, communication environment, and the smallest complete diagnostic action the application should support.
Specify required input fields, diagnostic definitions, connection states, progress indicators, error messages, and the result evidence to retain.
Implement the selected interface and transport, connect the required diagnostic service, and present raw and interpreted responses through the agreed user flow.
Check successful execution, unavailable ECU, invalid or unsupported data, and connection interruption using the available test environment.
Provide execution instructions, configuration requirements, supported scenarios, and remaining limitations with the application and agreed test assets.
What you receive
Software for executing and interpreting ECU diagnostic services within the agreed workflow.
Executable tests with setup, assertions, and repeatable results for defined diagnostic behavior.
CAPL source implementing the agreed CANoe behavior or automation.
A documented technical analysis with evidence, investigation scope, and findings.
Technologies & formats
ISO 14229 diagnostic services for communicating with vehicle ECUs.
An ASAM model for machine-readable ECU diagnostic data.
A general-purpose language widely used for automotive analysis, tooling, and automation.
A cross-platform C++ framework for graphical and embedded applications.
A segmented transport protocol for messages carried over CAN.
Diagnostic transport over IP networks as defined by ISO 13400.
A coded diagnostic record identifying a detected fault condition.
A UDS identifier addressing diagnostic data exposed by an ECU.
An ECU diagnostic operating mode controlling service availability and timing.
The UDS service used to start, stop, or request results from ECU routines.
A diagnostic challenge-response mechanism that unlocks protected ECU services.
A development, simulation, test, and analysis environment for vehicle networks.
Vector event-driven language for network simulation, testing, and automation.
FAQ
Discuss the evidence
Share the ECU context, available ODX or PDX data, recordings, existing CANoe project, and problem description to scope the application or investigation.