| Error Code/Message | Likely Cause | Resolution | | :--- | :--- | :--- | | | Driver issue or cable fault | Reinstall VCI drivers; check USB cable; try a different USB port. | | No Communication with PCM | Ignition off, blown fuse, or bad DLC | Verify ignition is ON; check fuses for the PCM and DLC (often Cig/Power Outlet fuse). | | Security Access Denied | Incorrect login or time-out | Ensure you are logged into the Ford service network; wait the mandatory timer period (often 10 minutes). | | Calibration File Mismatch | Wrong file downloaded | Re-download the correct calibration file for the specific VIN. |