udsoncan
Implementation of the Unified Diagnostic Service (UDS) protocol (ISO-14229) used in the automotive industry.
Decision gist · record as of 2026-08-14
Yes, if you need UDS protocol support for automotive diagnostics. The package is actively maintained, has no external dependencies, carries a permissive MIT license, and addresses a specialized but real need in automotive development and testing. 721 repository stars and consistent release cadence suggest production use. No known security vulnerabilities. Install it if your project involves vehicle ECU communication; skip it if you do not work in automotive diagnostics.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.7+; transport layer (e.g., ISO-TP socket) must be configured separately
- Low install friction with no runtime dependencies.
- Active maintenance: last commit 2026-08-09, 721 repository stars, and a release within 50 days indicates ongoing development.
License · maintenance · safety
MIT (permissive) — MIT license permits commercial and private use with minimal restrictions, suitable for both open-source and proprietary projects.
last release 2026-06-25 (50 days) · last repo commit 2026-08-09 · 721 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 217,217 downloads/mo, #9,362 on PyPI
Alternatives
Verify before relying
pip install udsoncan
import udsoncan
from udsoncan.client import Client
from udsoncan.connections import IsoTPSocketConnection
from udsoncan.services import DiagnosticSessionControl
conn = IsoTPSocketConnection('can0', ...)
with Client(conn, request_timeout=2) as client:
client.change_session(DiagnosticSessionControl.Session.extendedDiagnosticSession)- Whether isotp library shown in example is an optional or required peer dependency
- Specific vehicle models or ECU types supported or tested against
- Performance characteristics under high-frequency diagnostic requests
What it is and what it does
udsoncan is a Python implementation of the UDS (Unified Diagnostic Services) protocol standardized in ISO-14229, used primarily in automotive diagnostics to communicate with vehicle electronic control units (ECUs). It provides a client library that handles the protocol's request-response messaging, session management, security access, and data reading/writing operations typical in vehicle diagnostics workflows.
The package requires Python 3.7+ and has no runtime dependencies, making it lightweight to integrate. It exposes high-level client methods like `change_session`, `unlock_security_access`, `write_data_by_identifier`, and `ecu_reset` that abstract away low-level protocol details, allowing developers to focus on diagnostic logic.
Use it for
- Develop custom vehicle diagnostic tools that read and modify ECU parameters without proprietary OEM software
- Automate ECU testing and validation during automotive development or manufacturing
- Build diagnostic applications that unlock security access and perform ECU resets for maintenance workflows
- Integrate UDS protocol support into Python-based automotive test harnesses or CI/CD pipelines
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you need UDS protocol support for automotive diagnostics.
The package is actively maintained, has no external dependencies, carries a permissive MIT license, and addresses a specialized but real need in automotive development and testing. 721 repository stars and consistent release cadence suggest production use. No known security vulnerabilities. Install it if your project involves vehicle ECU communication; skip it if you do not work in automotive diagnostics.
Install
udsoncan on PyPI
Before you install
Low install friction with no runtime dependencies. Active maintenance: last commit 2026-08-09, 721 repository stars, and a release within 50 days indicates ongoing development.
Requires Python 3.7+; transport layer (e.g., ISO-TP socket) must be configured separately
License in practice
MIT license permits commercial and private use with minimal restrictions, suitable for both open-source and proprietary projects.
Quickstart
pip install udsoncan
import udsoncan
from udsoncan.client import Client
from udsoncan.connections import IsoTPSocketConnection
from udsoncan.services import DiagnosticSessionControl
conn = IsoTPSocketConnection('can0', ...)
with Client(conn, request_timeout=2) as client:
client.change_session(DiagnosticSessionControl.Session.extendedDiagnosticSession)Verify before relying
- Whether isotp library shown in example is an optional or required peer dependency
- Specific vehicle models or ECU types supported or tested against
- Performance characteristics under high-frequency diagnostic requests
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.7 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | None |
| Maintenance | Actively maintained 50 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 217,217 / month, #9,362 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 4 - BetaIntended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseOperating System :: POSIX :: LinuxProgramming Language :: PythonProgramming Language :: Python :: 3Topic :: Scientific/Engineering :: Interface Engine/Protocol Translator |
Evidence: udsoncan-1.26.1-py3-none-any.whl
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