Circuit Description

Knock sensors are located on either side of cylinder block. Sensor generates voltage when engine block vibrates due to knocking. DTC is set when there is no knock sensor signal to ECM with engine speed of 2000 RPM or more. DTC P0325 is for knock sensor No. 1 on left bank. DTC P0330 is knock sensor No. 2 on right bank. Possible causes are:

• Open or short in knock sensor circuit.
• Knock sensor (loose).
• ECM.