Identification and evidence
Bosch's vehicle component catalogue lists Citroën Xantia X1 RFV 2.0 16-valve, December 1994 to January 1998, as MP5.1. A Peugeot 106 NFZ wiring document also identifies MP5.1 for that specific engine.
Identification and scope
Retain the complete ECU designation, Bosch and vehicle-manufacturer part numbers, engine, vehicle year and market, hardware and software identity. Similar names do not establish shared pin assignments, calibration files or programming procedures. Examples above are source-scoped and are not a complete fitment list.
Source accessed 10 November 2026.