A bend angle sensing assembly for determining a downhole bend angle of a downhole adjustable bent housing. The bend angle sensing assembly includes a flow diverter having a plurality of diverter apertures for receiving drilling fluid, the flow diverter orientable to a plurality of diverter configurations in dependence on the bend angle of the associated downhole adjustable bent housing. Each of the plurality of diverter configurations have one or more of the plurality of diverter apertures opening or closing to form a corresponding flow path configuration, each flow path configuration having a different flow area whereby the pressure of the drilling fluid changes for each flow path configuration. Additionally, a pressure sensor is communicatively coupled to the drilling fluid.