DTC P0325: Knock Sensor #1 Circuit: Description

Knock sensor No. 1 circuit is monitored with ignition on and engine running. DTC will set in Powertrain Control Module (PCM) when knock sensor circuit voltage falls to less than a minimum value at idle or deceleration. The minimum value is from a look-up table internal to PCM and is based on engine RPM. DTC will also set if sensor output voltage is more than 5 volts. Possible cause for DTC to set are: defective PCM, defective connectors or defective wiring.