P0431 Chevrolet 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 description As the code description implies the…
Category: Chevrolet
P0432 Chevrolet Main Catalyst Efficiency Below Threshold Bank 2
P0432 Chevrolet Main 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 description As the code description implies the P0432…
P0433 Chevrolet Heated Catalyst Efficiency Below Threshold Bank 2
P0433 Chevrolet Heated Catalyst Efficiency Below Threshold Bank 2 Possible causes – Air leak before catalytic converter– Faulty oxygen sensor– Faulty Catalytic Converter Tech description As the code description implies the P0433 Chevrolet code means that the vehicle’s control module has detected that the three-way catalytic converter is not working properly (is not as efficient…
P0434 Chevrolet Heated Catalyst Temperature Below Threshold Bank 2
P0434 Chevrolet Heated Catalyst Temperature Below Threshold Bank 2 Possible causes – Air leak before catalytic converter– Faulty oxygen sensor– Faulty Catalytic Converter Tech description As the code description implies the P0434 Chevrolet code means that the vehicle’s control module has detected that the three-way catalytic converter is not working properly (is not as efficient…
P0435 Chevrolet Catalyst Temperature Sensor Circuit Bank 2 Sensor 1
P0435 Chevrolet Catalyst Temperature Sensor Circuit Bank 2 Sensor 1 Possible causes – Catalyst Temperature Sensor harness is open or shorted– Catalyst Temperature Sensor circuit poor electrical connection– Faulty Catalyst Temperature Sensor Tech description As the code description implies the P0435 Chevrolet code means that the vehicle’s control module has detected that the three-way catalytic…
P042B Chevrolet Catalyst Temperature Sensor Circuit Range / Performance (Bank 1 – Sensor 2)
P042B Chevrolet Catalyst Temperature Sensor Circuit Range / Performance (Bank 1 – Sensor 2) OBD Code: System: Subsystem: P042B Chevrolet – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Catalyst Temperature Sensor Circuit Range / Performance (Bank 1 – Sensor 2) Location: Analysis: Possible Causes: Bank 1 – Sensor 2 Out of Expected Range Tech…
P042C Chevrolet Catalyst Temperature Sensor Circuit Low (Bank 1 – Sensor 2)
P042C Chevrolet Catalyst Temperature Sensor Circuit Low (Bank 1 – Sensor 2) OBD Code: System: Subsystem: P042C Chevrolet – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Catalyst Temperature Sensor Circuit Low (Bank 1 – Sensor 2) Location: Analysis: Possible Causes: Bank 1 – Sensor 2 End of Range – Circuit Lower Than Expected Tech…
P042D Chevrolet Catalyst Temperature Sensor Circuit High (Bank 1 – Sensor 2)
P042D Chevrolet Catalyst Temperature Sensor Circuit High (Bank 1 – Sensor 2) OBD Code: System: Subsystem: P042D Chevrolet – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Catalyst Temperature Sensor Circuit High (Bank 1 – Sensor 2) Location: Analysis: Possible Causes: Bank 1 – Sensor 2 End of Range – Circuit Higher Than Expected Tech…
P0430 Chevrolet Catalyst System Efficiency Below Threshold Bank 2
P0430 Chevrolet Catalyst System Efficiency Below Threshold Bank 2 Possible causes – Three way catalyst converter Bank 2– Exhaust tube– Intake air leaks– Fuel injectors may be faulty– Fuel injector leaks– Spark plugs may be faulty– Improper ignition timing– Engine Control Module (ECM) Tech description As the code description implies the P0430 Chevrolet code means…
P042A Chevrolet Catalyst Temperature Sensor Circuit (Bank 1 – Sensor 2)
P042A Chevrolet Catalyst Temperature Sensor Circuit (Bank 1 – Sensor 2) OBD Code: System: Subsystem: P042A Chevrolet – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Catalyst Temperature Sensor Circuit (Bank 1 – Sensor 2) Location: Analysis: Possible Causes: Bank 1 – Sensor 2 Circuit Issue Tech description:
P0425 Chevrolet Catalyst Temperature Sensor Circuit Bank 1 Sensor 1
P0425 Chevrolet Catalyst Temperature Sensor Circuit Bank 1 Sensor 1 Possible causes – Faulty Catalyst Temperature Sensor– Catalyst Temperature Sensor harness is open or shorted– Catalyst Temperature Sensor circuit poor electrical connection Tech description As the code description implies the P0425 Chevrolet code means that the vehicle’s control module has detected that the three-way catalytic…
P0426 Chevrolet Catalyst Temperature Sensor Range/Performance Bank 1 Sensor 1
P0426 Chevrolet Catalyst Temperature Sensor Range/Performance Bank 1 Sensor 1 Possible causes – Faulty Catalyst Temperature Sensor– Catalyst Temperature Sensor harness is open or shorted– Catalyst Temperature Sensor circuit poor electrical connection Tech description As the code description implies the P0426 Chevrolet code means that the vehicle’s control module has detected that the three-way catalytic…
P0427 Chevrolet Catalyst Temperature Sensor Low Input Bank 1 Sensor 1
P0427 Chevrolet Catalyst Temperature Sensor Low Input Bank 1 Sensor 1 Possible causes – Faulty Catalyst Temperature Sensor– Catalyst Temperature Sensor harness is open or shorted– Catalyst Temperature Sensor circuit poor electrical connection Tech description As the code description implies the P0427 Chevrolet code means that the vehicle’s control module has detected that the three-way…
P0428 Chevrolet Catalyst Temperature Sensor High Input Bank 1 Sensor 1
P0428 Chevrolet Catalyst Temperature Sensor High Input Bank 1 Sensor 1 Possible causes – Faulty Catalyst Temperature Sensor– Catalyst Temperature Sensor harness is open or shorted– Catalyst Temperature Sensor circuit poor electrical connection Tech description As the code description implies the P0428 Chevrolet code means that the vehicle’s control module has detected that the three-way…
P0429 Chevrolet Catalyst Heater Control Circuit Bank 1
P0429 Chevrolet Catalyst Heater Control Circuit Bank 1 Possible causes – Faulty Catalyst Temperature Sensor– Catalyst Temperature Sensor harness is open or shorted– Catalyst Temperature Sensor circuit poor electrical connection Tech description As the code description implies the P0429 Chevrolet code means that the vehicle’s control module has detected that the three-way catalytic converter is…
P041E Chevrolet Exhaust Gas Recirculation (EGR) Temperature (Sensor B) Circuit Intermittent / Erratic
P041E Chevrolet Exhaust Gas Recirculation (EGR) Temperature (Sensor B) Circuit Intermittent / Erratic OBD Code: System: Subsystem: P041E Chevrolet – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Exhaust Gas Recirculation (EGR) Temperature (Sensor B) Circuit Intermittent / Erratic Location: Analysis: Possible Causes: Sensor B Periodically Unstable Circuit Tech description:
P0420 Chevrolet Catalyst System Efficiency Below Threshold Bank 1
P0420 Chevrolet Catalyst System Efficiency Below Threshold Bank 1 Possible causes – Three way catalyst converter Bank 1– Exhaust tube– Intake air leaks– Fuel injectors may be faulty– Fuel injector leaks– Spark plugs may be faulty– Improper ignition timing– Engine Control Module (ECM) Tech description As the code description implies the P0421 Chevrolet code means…
P0421 Chevrolet Warm Up Catalyst Efficiency Below Threshold Bank 1
P0421 Chevrolet Warm Up Catalyst Efficiency Below Threshold Bank 1 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 description As the code description implies the…
P0423 Chevrolet Heated Catalyst Efficiency Below Threshold Bank 1
P0423 Chevrolet Heated Catalyst Efficiency Below Threshold Bank 1 Possible causes – Air leak before catalytic converter – Faulty oxygen sensor– Faulty Catalytic Converter Tech description As the code description implies the P0423 Chevrolet code means that the vehicle’s control module has detected that the three-way catalytic converter is not working properly (is not as…
P0424 Chevrolet Heated Catalyst Temperature Below Threshold Bank 1
P0424 Chevrolet Heated Catalyst Temperature Below Threshold Bank 1 Possible causes – Air leak before catalytic converter – Faulty oxygen sensor– Faulty Catalytic Converter Tech description As the code description implies the P0424 Chevrolet code means that the vehicle’s control module has detected that the three-way catalytic converter is not working properly (is not as…