A new integrated circuit transducer has been developed for engine oil pressure control in off-road and heavy duty vehicles. The design and development was directed at optimizing cost vs. performance trade-offs. Both, system and component level considerations have been incorporated to achieve the objective. Total error of less than 2% of full scale has been accomplished with possible further improvement using system options. Of particular interest is the structural design that meets environmental reliability and which can be extended for pressure control applications in pneumatic and hydraulic systems in off-road and heavy duty vehicles.