The "100 251 Rev 1.0" designation typically refers to the printed circuit board (PCB) revision found inside Delphi-compatible diagnostic interfaces, such as the DS150E or VCI (Vehicle Communication Interface) units.
Delphi 100 251 Rev 1.0 (often referenced as Serial Number 100251) is not a software version itself, but a hardware serial number and revision level for the Delphi DS150E Autocom CDP+ Delphi 100 251 Rev 1.0 Software Download
: Read and erase Diagnostic Trouble Codes (DTCs) across all vehicle systems, including engine, ABS, and SRS. Real-Time Data The "100 251 Rev 1
| Problem | Likely Solution | | :--- | :--- | | | Install older Microsoft Visual C++ Redistributables (2010, 2013). | | USB device not recognized | Reinstall drivers manually via Device Manager. Look for "Delphi VCI" under "Universal Serial Bus devices." | | Software crashes on launch | Run the application in Windows 7 Compatibility Mode . Right-click executable > Properties > Compatibility. | | Cannot read VIN | Check the OBD-II cable. Rev 1.0 requires a J1962 cable with PINs 4,5,16 (power/ground) and either 6+14 (CAN) or 7 (K-Line). | | License dongle not detected | Clean the dongle’s USB contacts. For red dongles, install Sentinel HASP drivers separately. | | | USB device not recognized | Reinstall
Since Delphi supplies ECUs to manufacturers like General Motors, Ford, and BMW, the "Delphi 100 251 Rev 1.0" software might be embedded within factory-level diagnostic systems.
The naming convention suggests this is a (Rev 1.0) for a Delphi diagnostic interface or controller. “100 251” could refer to a: