P0324

What it means

The knock-control subsystem reports an internal error — typically a self-test fault or a noise floor that cannot be calibrated. The system protects against detonation by retarding ignition; with this fault knock control is disabled.

Is it safe to drive?

This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.

Most likely causes

• Internal knock-control fault

  high

  One of the most commonly reported causes for this code — check this first.

• Gateway module routing CAN messages incorrectly

  low

  Less common, but worth ruling out after the more likely causes.

• CAN terminating resistor (120 Ω) drifted out of spec

  low

  Less common, but worth ruling out after the more likely causes.

Related help

• Full P0324 diagnosis, causes & costs
• How to read check engine light codes
• Is it safe to drive with the light on?