The enhancement of the CMPS sensing characteristics is important in terms of the durability and reliability of vehicles. Recently, because of cost reduction demands for vehicle, Camshaft processing defects induced Run-out and magnetization has occurred frequently. Therfore Camshaft position sensor attached on the engine has to be needed the effort to improve sensitivity and also important to solve problems about Cylinder stroke detection defects caused by missing signal. This paper presents the development of the sensing algorithm to reduce the CVVT and Cylinder stroke detection defects.