P0430 Code – Catalyst System Efficiency Below Threshold Bank 2

Code P0430 Possible Causes
Faulty Heated Oxygen Sensor Bank 2 Sensor 2 or Rear Sensor or Downstream Sensor
Faulty Three-way Catalyst Converter Bank 2
Gas leak from exhaust system
Exhaust system leaks
Faulty front heater O2 sensor
Loose front or rear HO2Ss

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