P1324 BMW Knock Sensor Power Source Circuit Low Voltage
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 P1324 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?
When an excessively low voltage from the sensor is sent to Engine Control Module (ECM)
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Possible Lack/Loss of Power
– Possible Lack/Loss of Power
P1324 BMW Description
The knock sensor is mounted on the cylinder block and detects engine knocking. The vibration caused by knocking are converted into electrical signals through the piezo ceramic element. The Engine Control Module (ECM) controls the ignition timing based on the electrical signals. If the signal from the knock sensor do not vary for a set time period, the ECM detects a malfunction and sets the P1324 BMW code.
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