BMW 318 CHECK ENGINE LIGHT RESET

We Have A Bmw 318 Ti It Has The :( Engine Light On We Have Replaced The Catalyst And The Front And Rear Oxigent Sensors, We Have The...

Hi, The Car Has 108,000 Miles. Engine Light Is On, Obdii Code P0203. (3rd Cylinder Injector.) When I Reset The Light Is Stays Off...