P0430
Catalyst Efficiency Below Threshold (Bank 2)
System: Emissions
Severity: medium
What does P0430 mean?
The DTC P0430 (Catalyst Efficiency Below Threshold (Bank 2)) is a fault code stored by the ECU when it detects a cat efficiency low B2 condition in the emissions subsystem. It is commonly seen on European and Asian vehicles using Bosch, Continental, Siemens or Denso ECUs.
Common causes of P0430
- Dead cat (bank 2)
- O2 sensor failure
How to fix P0430
Same as P0420 for bank 2.
Tuning approach with DaVinci Deluxe
For P0430, DaVinci Deluxe offers the following ECU map adjustments and software solutions:
- Cat monitor OFF (bank 2)
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