| Message | Meaning | Action | | :--- | :--- | :--- | | Interface found – Genuine | Perfect. Proceed to DiagBox. | None needed. | | Interface found – Clone | May work but unstable. | Consider firmware reflash. | | Driver error 0x0001 | USB driver failure. | Reinstall Actia driver. | | No response from VCI | Interface bricked or fake chip. | Replace VCI. |
Cause: Your VCI is on version 3.x, but DiagBox 9.x requires 4.x. Fix: Use the dedicated Firmware Updater (often a separate download) – do not attempt to flash via the Checker. Psa Interface Checker V3 Download
Windows 10 and 11 frequently override legacy PSA drivers with generic USB drivers. The Checker confirms that the correct Actia drivers are loaded. | Message | Meaning | Action | |
| Error Message | Likely Cause | Solution | |----------------|----------------|-----------| | VCI not found | Driver missing | Install latest VCP drivers for your interface | | ECU timeout | Ignition off or low battery | Turn ignition ON, use a battery support unit | | Protocol mismatch | Wrong vehicle selected | Re-select correct model year and ECU family | | Access denied | Missing admin rights | Run as Administrator | Cause: Your VCI is on version 3