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Home >> Lexus >> 1997 >> SC 400 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Circuit Tests >> DTC P0325, P0330 - Knock Sensor No. 1 & 2. >> Circuit Description

Circuit Description

Knock sensors are located on left and right 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 1700 RPM or more. DTC P0325 is for knock sensor No. 1 on left side of cylinder block. DTC P0330 is for knock sensor No. 2 on right side of cylinder block. Possible causes are:

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