Wireless sensor networks are new type of emerging networks with bunch of applications in all fields due to their low cost and low power scheme. As these networks follow open wireless communication, they undergo dynamic node problems and fault node detection due to malicious node activities. In this paper we overcome these problems with the help of algorithms that will provide uninterrupted communication and also save node’s energy and time.function. It is therefore critical for the base station to find out the reason for the node failure. To distinguish these cases, the base station needs to trace all dead nodes.