Actia Psa Interface Driver May 2026

| Component | Function | | ---------------------- | ----------------------------------------------------------------- | | actia_usb.sys | USB bulk transfer management, endpoint configuration | | actia_can_fd.sys | CAN FD frame handling up to 8 Mbps | | actia_sgw.dll | Secure gateway challenge‑response for 2016+ PSA vehicles | | actia_iso15765.dll | ISO 15765-2 segmentation / reassembly (up to 4095 bytes) | | actia_flash.dll | Bootloader pass‑through for ECU reprogramming |

The ACTIA PSA Interface Driver is a highly optimized, low‑latency VCI driver essential for professional diagnostics on PSA vehicles. Its support for secure gateway authentication, CAN FD, and multi‑protocol handling distinguishes it from generic OBD interfaces. However, strict driver signing and hardware‑locked firmware limit its use to official ACTIA hardware.

For developers, reverse‑engineering efforts exist but are risky due to anti‑tamper mechanisms. For repair shops, the official WHQL‑signed driver remains the only reliable choice for PSA telecoding and ECU reprogramming.

References

DiagBox and PP2000 are notoriously picky about COM port numbers. They typically only scan COM1 through COM4.

If you can clarify which specific "piece" you are missing (e.g., "my USB cable is broken" or "my computer says device unknown"), I can provide a more specific link or instruction.

ACTIA PSA Interface Driver a specialized software component that enables communication between a computer and the ACTIA Vehicle Communication Interface (VCI) actia psa interface driver

used for diagnosing Peugeot, Citroën, DS, and Vauxhall vehicles

. As the official diagnostic hardware partner for PSA Group, ACTIA provides the essential link required by software like to perform deep-level electronic maintenance. Core Functionality

The driver serves as a bridge, translating high-level diagnostic commands into the low-level serial or network protocols understood by a vehicle's Electronic Control Units (ECUs). Protocol Support: Compatible with modern standards including DoIP (Ethernet ISO 13400) Operations:

Once installed, it allows for reading and clearing fault codes (DTCs), viewing live sensor data (e.g., engine speed, battery voltage), ECU reprogramming, and actuator testing (e.g., fuel pump activation). Device Modes: Advanced drivers for tools like the PSA Evolution A

allow the interface to switch between different modes, such as (standard dealership diagnostics) and (used for newer DS and Chrysler/Mopar platforms). Driver Installation & Configuration

Drivers are typically bundled with diagnostic software suites, but manual installation is common in independent repair settings. PSA Interface Checker and Lexia Version - French Car Forum | Component | Function | | ---------------------- |

The Actia PSA Interface, commonly known as the XS Evolution or Lexia 3, is a professional-grade diagnostic tool used to communicate with electronic control units (ECUs) in Peugeot, Citroën, DS, and recent Vauxhall vehicles. The "driver" refers to the software bridge that allows a Windows PC to recognize the hardware via USB to perform diagnostics, coding, and ECU reprogramming. 1. Hardware Overview

The interface is a Vehicle Communication Interface (VCI) that connects a vehicle's OBD-II port to a laptop.

Protocols Supported: K-Line, CAN-BUS, SAE J1850, and modern DoIP (Diagnostics over IP) for newer models. Key Models: XS Evolution: The legacy standard for DiagBox software.

PSA CORE XS: A newer, high-performance variant featuring 8GB flash memory and dual-stream WLAN for advanced diagnostics.

Original vs. Clone: Authentic units have unique serial numbers (e.g., starting with 921815C or 922173A). Clones often use generic serials like 921815B and may require manual firmware patches to work with newer software. 2. Driver Installation and Setup

Drivers are rarely installed as standalone files; they are typically bundled with diagnostic software suites. The ACTIA PSA Interface Driver is a highly

Automatic Installation: Drivers for the VCI are usually installed automatically during the initial setup of DiagBox (Version 7 and later).

VCI Setup Utility: For modern systems like wiTECH (used for newer PSA/FCA crossovers), a specific VCI Setup Utility must be downloaded from the Mopar Technical Service Portal or Service Box to ensure the latest drivers are active.

Compatibility: Most drivers require Windows 7 (32-bit) for legacy stability, though newer versions support Windows 10/11 through specialized installers like the VCI Setup Utility. 3. Essential Management Tools

Two primary utilities are used to manage the interface driver and hardware:

PSA Interface Checker: A diagnostic tool for the interface itself. It allows users to check the current firmware version and manually "flash" or update the firmware if the driver fails to communicate with newer software versions.

Link to PSA Interface USB: An application used to toggle the device between DiagBox mode (standard PSA diagnostics) and wiTECH mode (for newer collaborative platforms). Actia Psa Xs Evolution Download Windowsgolkes - Facebook

ACTIA driver provides internal logging (enabled via registry key on Windows):

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ACTIA_PSA\Parameters
    "LogLevel" = DWORD:0x3 (info+debug)
    "LogFile"  = "C:\ACTIA_Driver.log"

Log includes: