Knock Sensor (KS)

Knock sensor is mounted on engine block. Sensor detects detonation in cylinders and vibration from the engine. KS is a piezo electric element that converts vibration into a voltage signal which is then sent to ECM. ECM will retard timing based on this signal. Optima & Magentis (Canadian) (2.5L) is equipped with two KS, one located on each side of the block. On Optima & Magentis (Canadian) (2.4L), KS is located on left side of engine block. On Rio, KS is located on right side of engine block. On Sephia and Spectra, KS is located behind intake manifold support bracket. On Sportage, KS is located on right side of engine, above oil filter.