A sensor communication system includes an electromagnetic waveguide disposed adjacent to at least one component of a machine. The electromagnetic waveguide can be configured to convey a fluid within the machine. The sensor communication system can also include a sensor assembly, which includes a sensor operable to sense at least one condition and a transmitter at least partially positioned in the electromagnetic waveguide. The transmitter can be operatively coupled to the sensor and be operable to emit a signal corresponding to the at least one condition sensed by the sensor. The sensor communication system can also include a receiver at least partially positioned in the electromagnetic waveguide and operable to wirelessly receive the signal emitted by the transmitter.