OEM Diagnostic
Diagbox is PSA's unified dealer-level diagnostic and service software for Peugeot, Citroën, DS and, post-merger, some Opel/Vauxhall models, consolidating the older Lexia (Citroën) and PP2000 (Peugeot) tools into one application. Using a Lexia-3/compatible passthru interface on the OBD port, it reads and clears DTCs across all control units, shows live data, runs actuations and guided tests, performs telecoding and configuration, injector/key/BSI programming, DPF forced regeneration and additive (Eolys) management, and various service resets. Independent PSA specialists rely on Diagbox for deep marque-specific functions across a broad range of PSA vehicles. Newer models and online programming require appropriate access. It is the standard reference tool for Peugeot/Citroën diagnostics, effectively replacing the standalone Planet/PP2000 and Lexia software.
Diagbox provides PSA on-car diagnostics, coding and service functions; Softechpro works on the extracted engine calibration instead, applying DPF/EGR/DTC-off modules and Stage tuning with automatic checksum correction.
See Softechpro plansTry the file service