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Engine-Codes.com | All About OBDII Engine Codes

P0328 Subaru

P0328 Subaru - Knock Sensor 1 Circuit High Input - Bank 1 Or Single Sensor

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P0328 Subaru Comments |  Add Comment
Possible causes
- Faulty knock sensor
- Knock sensor circuit poor electrical connection
- Knock sensor harness is open or shorted
- Faulty Engine Control Module (ECM)
Help with Possible causes What does this mean?
Tech notes
The P0328 code means that the Knock Sensor is not working properly. Problems with the knock sensor will not cause an engine performance problems. Replacing the knock sensor usually takes care of the problem.
Help with Tech Notes What does this mean?
When is the code detected?
An excessively high voltage from the sensor is sent to Electronic Control Module (ECM)
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Possible Lack/Loss of Power
P0328 Subaru 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).

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