| Issue | Likely Cause | |-------|---------------| | Missing CAFD | ECU requires newer PSdZData or full version | | E-Sys crashes | Wrong folder structure (needs psdzdata as root inside) | | Connection error | ENET driver or firewall block |
: Contains only the metadata needed for coding (FDL and VO). It is significantly smaller (usually ~2-5GB). v42720 psdzdata lite download work
Once the files are in place, it is time to verify that your software recognizes the new database. | Issue | Likely Cause | |-------|---------------| |
In E-Sys, go to Vehicle → Read ECU → right-click an ECU → Read Coding Data . If successful, you’re working with the correct version. you’re working with the correct version.