P0325: Knock sensor 1 circuit (bank 1)

What does it mean?

System

Powertrain (engine and transmission)

Subsystem

Ignition and misfires

Type of code

Generic code: means the same on every make.

How urgent?

Have it checked soon. You can usually still drive, but avoid long trips and heavy loads.

Possible causes

• A sensor or actuator in the system concerned
• Wiring, connector or ground connection
• Control unit or software

Tip: don’t just clear the code. Clearing a code doesn’t fix the cause. It often comes back, and the stored data that helps us find the cause is then gone.