1999 sonata 2.5l crankshaft sencor code help

hi -i have 1999 sonata with a 2.5l v6 and it dies and lacks power on accel i hooked up scanner and i an getting code 335 --crankshaft sencor code i bought a crank sencor and i cant find it on engine -- is it on cyl head at rear head -- manual says it is at front of head i cant see it --help

Its under the belt tensiorer of the accessory belt. Stand by the passenger side of the car and look at the engine (which will be the front view cuz its mounted sideways) if u need extra help ill post a pic.