Possible Causes
WARNING: This page is about a different car, the 2003 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
DTC is set when:
- For DTC P0325, output voltage of the knock sensor 1 decreases beyond a threshold. (Threshold varies according to engine speed). Possible causes are: knock sensor 1 (defective or loose), or defective ECM.
- For DTC P0327, output voltage from knock sensor 1 is 0.5 volt or less. Possible causes are: defective knock sensor 1, short in knock sensor 1 circuit or defective ECM.
- For DTC P0328, output voltage from knock sensor 1 is 4.5 volts or more. Possible causes are: defective knock sensor 1, open in knock sensor 1 circuit, or defective ECM.
- For DTC P0330, output voltage of the knock sensor 2 decreases beyond a threshold. (Threshold varies according to engine speed). Possible causes are: knock sensor 2 (defective or loose), or defective ECM.
- For DTC P0332, output voltage from knock sensor 2 is 0.5 volt or less. Possible causes are: defective knock sensor 2, short in knock sensor 2 circuit or defective ECM.
- For DTC P0333, output voltage from knock sensor 2 is 4.5 volts or more. Possible causes are: defective knock sensor 2, open in knock sensor 1 circuit, or defective ECM.