16806/P0422/001058 - Main Catalyst: Bank 1: Efficiency Below Threshold Possible Causes Oxygen Sensor(s) defective Oxygen Sensor(s) Control defective Catalyst faulty Possible Solutions Check Oxygen Sensor(s) Check Oxygen Sensor(s) Control Perform Oxygen Sensor(s) Aging Check Set Readiness Jak sam widzisz albo zapchany kat albo która(ś) z sond lambda....