top of page
Toyota P0430 Code – Catalyst Efficiency Below Threshold Bank 2
Yes
Safe to drive :
Toyota vehicles only
Applies only to :
Not applicable to :
This explanation does NOT apply to other manufacturers.
Medium
Severity level :
When Does This Code Appear on the Vehicles
Toyota P0430 affects Bank 2 emissions efficiency.
What This Code means on the Vehicles
On Toyota vehicles, P0430 indicates catalyst efficiency below threshold on Bank 2.
Why This is different from a generic OBD2 Code
Toyota exhaust design makes leaks and sensor aging common triggers.
Common Situations That Trigger This Code
Exhaust leaks; O2 sensor degradation.
What Will NOT Fix This Code
Replacing catalytic converter prematurely.
How to Clear This Code on Vehicles
Inspect exhaust system, confirm sensor operation, then replace catalyst if necessary.
Related Manufacturer Specific Codes
Toyota P0420
bottom of page