Identification
Bosch ML2.1 is listed in Bosch vehicle component applications. It is indexed under ML-Motronic 2.
Documented example
Bosch lists ML 2.1 for a Porsche 944 S2, engine M44.41, 3.0-litre, dated December 1988 to July 1991. Bosch component catalogue, Porsche 944. This is a source-scoped example, not a complete fitment list. Identify the actual unit before applying service information.
Workshop identification
Record the complete ECU designation, Bosch and manufacturer part numbers, engine code, vehicle year and market and software identity. Use the wiring and diagnostic information for the exact application. Similar series names do not establish a common pinout, calibration, immobiliser setup or programming procedure.
Sources and limitations
Bosch vehicle component applications; independent catalogue, accessed 10 November 2026. Any additional example source is linked above. Catalogue and tool listings are not an exhaustive fitment guarantee; this page does not establish connector pin functions.