Manually point the search to the C:\APPLIC\LEXIA\Driver folder. B. The "PSA Agent" and Java Issues
The "Data Access Problem" isn't a single failure but a symptom of several possible issues: diagbox data access problem
Check if your device is recognized as "Reference C." If it shows "Reference B" and you are using newer software, you may need a firmware update or a hardware upgrade to a "Full Chip" version. D. Run as Administrator and Compatibility Mode This sounds basic, but it solves 40% of data access errors. Right-click the Diagbox icon on your desktop. Select > Compatibility . Select > Compatibility
Check the tab for PSA Agent . If it is stopped, right-click and Start it. and DS owners or technicians
For Peugeot, Citroën, and DS owners or technicians, the software is an indispensable tool for diagnostics, coding, and maintenance. However, few things are as frustrating as encountering the dreaded "Data Access Problem" just when you need to clear a fault code or program a new part.
Ensure your Java Runtime Environment is up to date, as the interface rendering depends on it. C. Firmware Synchronization
The firmware version on your VCI (Vehicle Communication Interface) might not be compatible with the version of Diagbox you are running.