What does code P0430 mean?
The catalytic converter on bank 2 is operating below the minimum efficiency required for proper exhaust emission control.
OBD-II Code
P0430 — Catalyst System Efficiency Below Threshold (Bank 2)
The catalytic converter on bank 2 is operating below the minimum efficiency required for proper exhaust emission control.
Common symptoms
- Increased fuel consumption
- mild vibrations
- persistent check engine light
Possible causes
- Worn catalytic converter
- faulty oxygen sensors B2S1 or B2S2
- exhaust leaks
Initial recommendation
Inspect oxygen sensor operation on bank 2 and evaluate catalytic converter condition.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0430 with your vehicle's actual symptoms for more complete diagnostic guidance.
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