P0328 BMW Knock Sensor 1 Circuit High
Possible causes
– Faulty knock sensor
– Knock sensor circuit poor electrical connection
– Knock sensor harness is open or shorted
– Faulty Engine Control Module (ECM)
– Knock sensor circuit poor electrical connection
– Knock sensor harness is open or shorted
– Faulty Engine Control Module (ECM)
Tech description
The P0328 BMW 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.
What about the obd code?
An excessively high voltage from the sensor is sent to Electronic Control Module (ECM)
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Possible Lack/Loss of Power
– Possible Lack/Loss of Power
P0328 BMW 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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