Catalyst System Efficiency Below Threshold (Bank 2)

What does this mean?

Code P0430 is identical to P0420 but affects Bank 2 of the engine. The catalytic converter on Bank 2 is not cleaning exhaust gases effectively.

Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Mazda Cx-30 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.