P0325

What it means

This code means your car's computer isn't getting a proper signal from the knock sensor, which is designed to detect engine knocking or pinging. This sensor helps the engine adjust timing to prevent damage.

Is it safe to drive?

Driving with a P0325 code can lead to reduced engine performance and potentially cause engine damage if the engine is knocking without the PCM being able to detect and compensate for it. It's best to get it checked soon.

Most likely causes

• Faulty Knock Sensor

  high

  The sensor itself can fail internally, leading to an incorrect or absent signal.

• Wiring Harness Issues (open, short, corrosion)

  medium

  Damaged wires or corroded connectors between the sensor and the PCM can disrupt the signal.

• PCM (Powertrain Control Module) Failure

  low

  Though rare, a faulty PCM might not correctly interpret the knock sensor signal or have an internal fault.

Related help

• Full P0325 diagnosis, causes & costs
• How to read check engine light codes
• Is it safe to drive with the light on?