– This paper intend a fault node recovery (FNR) algorithm rule to boost the lifetime of a wireless sensor network (WSN) while several of the sensor node close, either as they no longer have battery energy or they have reached their operational threshold. Therefore, it's necessary that network failures are detected earlier and applicable measures are taken to sustain network operation. The algorithmic rule relies on the grade diffusion algorithmic rule combined with the genetic algorithmic program. This paper proposes a fault node recovery algorithmic rule for WSN based on the grade diffusion algorithmic rule combined with a genetic algorithmic program. The FNR algorithmic rule needs replacement few numbers of sensor nodes and reuses the most routing paths, increasing the WSN lifetime and reducing the replacement cost.