Knock Sensor 1 Circuit Malfunction

What does this mean?

Code P0325 indicates a problem with knock sensor 1. The knock sensor detects engine detonation and allows the PCM to retard ignition timing to prevent damage.

Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Mazda Cx-9 models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.