OBD-II Trouble Code P0325:
Knock Sensor Circuit Malfunction
Each knock sensor is fitted to the right bank and left bank of the cylinder block to detect engine knocking. This sensor contains a piezoelectric element which generates a voltage when it becomes deformed, which occurs when the cylinder block vibrates due to the knocking. If engine knocking occurs, ignition timing is retarded to suppress it.
You may notice drivability problems including a lack of power and perhaps some hesitation. There may also be other symptoms.
A code P0325 most likely means one or more of the following has happened:
> The knock sensor is faulty and needs to be replaced
> There is a wiring short/fault in the knock sensor circuit Possible Solutions
> Check the resistance of the knock sensor
> Check for broken/frayed wires leading to the sensor
> Replace the knock sensor
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