The 2.2 crank sensor is mounted low on the back side of the block,above the oil pan.It is held down by a bolt on clamp,and can be absolutely impossible to remove at times.It has a long "neck" that goes thru the block all the way and it can freeze into the block.Just tripping a Crank Sensor code doesnt mean its at fault....could be wiring or a bad plug in too.....