200SX L4-1998cc 2.0L DOHC MFI (SR20DE) (1995)
Knock Sensor: Description and Operation
KNOCK SENSOR (KS) (DTC: P0325)
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 Engine Control Module (ECM).
*
Freeze frame data will not be stored in the ECM for the knock sensor. The Malfunction Indicator Lamp (MIL) will not light for knock sensor
malfunction.