Detection and compensation of multiplexer leakage current

A multiplexed input/output (I/O) system including:

• a leakage detection multiplexer for receiving a sensor input at each of a plurality of input channels, for providing a sensor output selected from one of the plurality of input channels at an output channel associated with the selected input channel, and for providing a leakage output indicative of leakage current associated with a selected input channel at the output channel associated with the selected input channel, wherein the leakage detection multiplexer includes at least one leakage sense resistor connected to each of plurality of input channels, wherein the leakage output represents the voltage across the leakage sense resistor associated with the selected input channel;
• and
• a controller for generating a notification when the output indicative of leakage current exceeds a threshold value indicating a loss of integrity associated with the selected input channel.