P0327
Powertrain Codes
P0327 - SCION - Knock Sensor (KS) 1 Circuit Low Input
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Lack/Loss of Power
Possible Causes
- Knock sensor circuit short to ground
- Knock sensor circuit short to power
- Knock sensor circuit open
- Faulty knock sensor
- Faulty Engine Control Module (ECM)
When Detected
An excessively low voltage from the sensor is sent to Engine Control Module (ECM)
Tech Notes
Replacing the knock sensor usually takes care of the problem.
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 Engine Control Module (ECM).