DTC P0325: Knock Sensor Circuit Malfunction: Condition
WARNING: This page is about a different car, the 2002 Mazda Protege5 and 2002 Mazda Protege. However, it is still accessible from the selected car via links, so may be relevant.
DTC is set when PCM does not detect input from Knock Sensor (KS) for 5 seconds with engine running, engine load more than 50 percent, engine coolant temperature more than 140°F (60°C), and engine speed 1500-5000 RPM. This is a continuous monitor. MIL is illuminated when PCM detects malfunction during first drive cycle. Possible causes are:
- KS malfunction.
- Open or short circuit between KS and PCM.
- PCM malfunction.