DTC P0327: Knock Sensor Circuit Low Input Or DTC P0328: Knock Sensor Circuit High Input: Description
The knock sensor is attached to the cylinder block. It senses engine knocking using a piezoelectric element. A knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a voltage signal and sent to the ECM.
NOTE:
Freeze frame data will not be stored in ECM and MIL will not illuminate for the knock sensor.