P0430 — Catalyst System Efficiency Below Threshold (Bank 2)
Reviewed1 source
1 source
- Official data (NHTSA)official_feed
What P0430 means
Caution — monitor closely
Same as P0420 but for the second cylinder bank — relevant on V-configuration and boxer engines.
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General information, not a diagnosis or repair instruction. Always confirm with a qualified mechanic for your specific vehicle.
Common causes
- Natural catalyst wear (bank 2)
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