The PSA Interface Checker is a lightweight diagnostic utility designed specifically for Peugeot and Citroën vehicles. Unlike heavy-duty dealer software (like Diagbox), this tool serves a specific, crucial purpose: it acts as a bridge between your computer and the vehicle’s various Electronic Control Units (ECUs).
It is most commonly used in conjunction with Lexia 3 hardware (PP2000) or specialized OBD2 cables. Its primary function is to identify the interface, check connection status, and ensure the drivers are communicating correctly with the car before you launch more complex diagnostic software.
Key Features:
If you are a certified workshop with a subscription to PSA’s Sedre or Service Box: psa interface checker download link
As of 2025, PSA (now Stellantis) has moved toward cloud-based diagnostics with tools like DiagBox 10.x and Online Service Box. The company no longer provides direct public links for the old interface checker. However, the legacy tool remains widely used for pre-2020 vehicles. Community-maintained versions will likely persist for years.
If you have searched for this tool before, you have likely encountered a maze of broken links, sketchy file-hosting sites, or software bundled with malware. Because the tool is often distributed by third-party hardware manufacturers rather than a centralized official website, finding a clean version can be difficult.
⚠️ Important Safety Note: Before downloading, ensure your antivirus is active. The "cracked" or unofficial versions of automotive software are notorious for containing trojans. Always scan a downloaded zip file before extracting it. The PSA Interface Checker is a lightweight diagnostic
A: Yes – the original tool was released as a free utility. No payment is required.
DiagBox has a basic “VCI Test” menu, but the standalone PSA Interface Checker offers:
If you are a weekly PSA vehicle diagnostician, the standalone checker is non-negotiable. If you have searched for this tool before,
While the software is typically packaged with the hardware drivers when you buy a Lexia 3 unit, you may need a standalone version if you lost the CD or need to reinstall.
File Name: PSA Interface Checker v1.xx (Versions vary, usually around v1.3 to v1.6)
File Size: Typically small, under 5MB.
Version: 2.1.0
Last Updated: April 22, 2026
File Size: 8.3 MB
Compatibility: Windows 10 / 11, Windows Server 2019+