The knock sensor in the 2014 kia optima is located on the side of the engine block, under the hood. the knock sensor is used to detect any kind of knocking inside the engine and alerts the driver to this condition. the sensor sends the data of each vibration produced inside the engine to the main ecu of the car. the ecu has a specified range to flag the knocking inside the engine. most of the vibrations the sensor will report will be due to bumps, but if the vibrations are large enough to fall inside the specified range, the ecu will report it as knocking and alert the car driver. the replacement of a faulty knock sensor will set you back about $ 180 to $ 210.
The 2014 kia optima knock sensor is located on the side of the engine block.