P0431 - OBD II Codes, OBD 2 Codes

P0431 2003 KIA SEDONA Warm Up Catalyst Efficiency Below Threshold Bank 2

Possible causes – Catalytic converter deterioration or malfunction– Exhaust system leaks– Loose front or rear HO2Ss– Faulty front heater O2 sensor– O2 sensors harness is open or shorted– O2 sensors poor electrical connection Tech notes As the code description implies

P0431 HYUNDAI Warm Up Catalyst Efficiency Below Threshold Bank 2

Possible causes – Catalytic converter deterioration or malfunction– Exhaust system leaks– Loose front or rear HO2Ss– Faulty front heater O2 sensor– O2 sensors harness is open or shorted– O2 sensors poor electrical connection Tech notes As the code description implies

P0431 KIA Warm Up Catalyst Efficiency Below Threshold Bank 2

Possible causes – Catalytic converter deterioration or malfunction– Exhaust system leaks– Loose front or rear HO2Ss– Faulty front heater O2 sensor– O2 sensors harness is open or shorted– O2 sensors poor electrical connection Tech notes As the code description implies

P0431 Warm Up Catalyst Efficiency Below Threshold Bank 2

Possible causes – Warm Up Three Way Catalytic converter deterioration or malfunction– Exhaust system leaks– Loose front or rear HO2Ss– Faulty front heater O2 sensor– O2 sensors harness is open or shorted– O2 sensors poor electrical connection Tech notes As

P0431 AUDI Warm Up Catalyst Efficiency Below Threshold Bank 2

Possible causes – Warm Up Three Way Catalytic converter deterioration or malfunction– Exhaust system leaks– Loose front or rear HO2Ss– Faulty front heater O2 sensor– O2 sensors harness is open or shorted– O2 sensors poor electrical connection Tech notes As

P0431 MAZDA Warm Up Catalyst System LH Efficiency Below Threshold

Possible causes – Warm Up Three Way Catalytic converter deterioration or malfunction– Exhaust system leaks– Loose front or rear HO2Ss– Faulty front heater O2 sensor– O2 sensors harness is open or shorted– O2 sensors poor electrical connection Tech notes As

P0431 VOLKSWAGEN Warm Up Catalyst Efficiency Below Threshold Bank 2

Possible causes – Warm Up Three Way Catalytic converter deterioration or malfunction– Exhaust system leaks– Loose front or rear HO2Ss– Faulty front heater O2 sensor– O2 sensors harness is open or shorted– O2 sensors poor electrical connection Tech notes As

P0431 MITSUBISHI Warm Up Catalyst Efficiency Below Threshold- Cylinders 2-3

Possible causes – Warm Up Three Way Catalytic converter deterioration or malfunction– Exhaust system leaks– Loose front or rear HO2Ss– Faulty front heater O2 sensor– O2 sensors harness is open or shorted– O2 sensors poor electrical connection Tech notes As