Psa Interface Driver |link| — Actia

The Actia interface can be picky with USB 3.0 (blue) ports. If possible, use a USB 2.0 port or a non-powered USB 2.0 hub to stabilize the connection.

For legitimate workshop interfaces, drivers can be found on the ACTIA IME Support Page .

If possible, use an older laptop solely for automotive diagnostics. Frequent Windows updates can overwrite or break legacy Actia driver paths. actia psa interface driver

The COM port number is above 4. Fix: Reassign to COM1 or COM2 as described above. Also, ensure no other software (e.g., Bluetooth, legacy modems) is using that COM port.

: Older versions of PSA software (Lexia 3 and PP2000) are designed for 32-bit systems (like Windows XP or Windows 7 32-bit). If you are on a 64-bit system, you may need a Virtual Machine or a newer version of Diagbox (v7.02 or higher). The Actia interface can be picky with USB 3

Go to > Advanced options > Startup Settings > Restart .

Plug the USB cable of your Actia interface directly into a USB 2.0 port on your PC. Avoid USB 3.0 (blue ports) as they can cause timing issues with older chips. If possible, use an older laptop solely for

Actia PSA Interface Driver: The Complete Installation and Troubleshooting Guide

Step 1: Disable Windows Driver Signature Enforcement (If Required)

Depending on your software package, drivers are either installed automatically or require manual mapping through the Windows Device Manager. Method 1: Automatic Installation via Diagbox Setup

The driver sits between diagnostic software (service tools, troubleshooting apps, or flashing utilities) and Actia-branded diagnostic devices (physical OBD-II/diagnostic interfaces). Its purpose is to encapsulate the low-level protocol details and hardware access so that higher-level diagnostic apps can read fault codes, view live sensor data, perform actuator tests, run calibrations, and program ECUs on PSA-family vehicles (Peugeot, Citroën, DS, and related models). Reliable drivers reduce risk during critical tasks such as ECU flashing, ensure correct interpretation of vehicle responses, and maintain compatibility across model years and variants.