MD1CS003 PSA Bench CableAbout the PSA Bosch MD1CS003 ECU The Bosch MD1CS003 is a modern engine control unit (ECU) used in a variety of PSA Group vehicles (Peugeot, Citron, DS, Opel Vauxhall under Stellantis). This ECU manages advanced fuel injection, emissions systems, and engine performance, supporting both petrol and diesel engines. Its commonly found in late model PSA vehicles, including popular models like the Peugeot 208, 308, 508, Citron C3, C4, and their respective