Catalitic converter mailfunction. Possible causes: - catalitic conv. mailfunction - o2 sensor mailfunction (ECU generates p430 from converter pre and post sensors data) - misfire; bad quality petrol, bad spark plugs, bad ignition coils (misfire means cat conv able to burn out without quick repair) - low fuel pressure: petrol filter needs replace, fuel pump needs replace - hole in exhaust system (sensors are ok, but measure wrong flow)
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