An internal combustion power plant includes an IC engine and exhaust system in combination. A warranty relating to the service order is checked. A user enters search parameters into the user interface that allows a user to vary the plural levels of the plural feature vectors. This probing light is guided by the fiber core towards a detector which measures the light intensity and this light intensity is correlated with a measurand. Further, a second isolation structure is formed inside the well region and spaced apart from the first isolation structure, a dielectric layer is formed over the well region, and a layer of silicon, formed over the dielectric layer, including a p-type portion, an n-type portion, and a center portion is disposed between the p-type and n-type portions.