Possible Causes
WARNING: This page is about a different car, the 2003 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
DTC is set when there is no knock sensor 1 signal to ECM when engine speed is 2000 RPM or more. If DTC P0325 exists, ECM will operate in fail-safe mode which retards the ignition timing to a maximum setting. Possible causes are:
- Knock sensor circuit is open or shorted.
- Defective or loose knock sensor.
- Defective ECM.