Actia Psa Interface Driver May 2026

Cause: You are trying to install a 32-bit driver on a 64-bit OS, or vice versa.
Fix: Locate the x64 subfolder within your driver package and run ActiaInstall_x64.exe. Avoid the x86 version on modern PCs.

If you have a non-original ACTIA (common low-cost version), the official D-PDU driver often fails (error 10 or device won’t start). In that case: actia psa interface driver

Do not update the Actia driver via Windows Update. Microsoft may push a generic driver that breaks functionality. If you accidentally update, roll back: Cause: You are trying to install a 32-bit

DiagBox and PP2000 are notoriously picky about COM port numbers. They typically only scan COM1 through COM4. If you have a non-original ACTIA (common low-cost

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.

Installing the Actia PSA interface driver can be tricky due to Microsoft’s driver signature enforcement. Follow these steps meticulously.