Cyber-physical systems (CPSs) refer to systems with integrated computational, network, and physical components. With the increasing connectivity among computational cyber-connected elements and the physical entities, capturing the interrelationship between the cyber and the physical systems becomes increasingly important. Especially, this intimate coupling between the cyber and physical systems will result in fault propagation from the embedded cyberspace to the physical system. In this paper, a novel cyber network fault diagnosis scheme is proposed to detect and isolate cyber and physical system faults. Additionally, a fault resilience control is designed to mitigate the degradation of system performance when cyber network faults occur and propagate over physical components.