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Engine-Codes.com | All About OBDII Engine Codes

P0325

P0325 - Knock Sensor Circuit Malfunction

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P0325 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 P0325 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?
When an excessively low or high voltage from the sensor is sent to Engine Control Module (ECM)
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Possible Lack/Loss of Power
P0325 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).

P0325 Information for specific makes
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