Conditions for Setting the DTCs

P0324 

The ECM detects that the knock sensor signal's performance is out of the normal expected range due to an excessive engine knock, or abnormal noise, or a flat signal; in at least a single cylinder.

P0326

• The ECM detects that the knock sensor signal indicates the sensor harness is connected, but the sensor is not properly bolted to the engine.

  OR

• The ECM detects that the knock sensor signal indicates an excessive engine knock is present.

P06B6 

The ECM has detected an internal knock sensor processor fault.