In this paper, we investigate the fault tolerance of connectivity probability for CDMA-based wireless sensor networks with variations of nodes deployment. The variations of deployment are modeled by 2D Gaussian distribution with zero-mean for the triangle, grid and hexagon topologies. Thus, the
-connectivity performance is studied through the outage probability of CDMA signal links. We evaluate the connectivity performance with
, the minimum requirement of SIR,
for the 3-connectivity, when the nodes suffer a failure rate
. Simulation results show that the hexagonal and grid topologies suffer a degradation of -2.4 and -0.5 dB, respectively, when the failure rate
equals 0.1. However, the triangular topology shows robust fault tolerance with the failure rate
below 0.5 and moderate variations of deployment.