Description OBD-II Trouble Code Description for P0421 Alfa Romeo Warm Up Catalyst Efficiency Below Threshold What does this mean? OBD2 Code P0421 Alfa Romeo definition: Basically this means that the oxygen sensor downstream of the catalytic converter on bank 1 is detecting that the converter is not working as efficiently as it should be (according…
Tag: P0420
P0420 Acura Catalyst System Efficiency Below Threshold Bank 1
Description OBD-II Trouble Code Description for P0421 Acura Warm Up Catalyst Efficiency Below Threshold What does this mean? OBD2 Code P0421 Acura definition: Basically this means that the oxygen sensor downstream of the catalytic converter on bank 1 is detecting that the converter is not working as efficiently as it should be (according to specs)….
P0420 VOLKSWAGEN 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 code means that the vehicle’s control module has detected that the three-way…
P0420 TOYOTA 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 P0420 code means that the vehicle’s control module has detected that the three-way…
P0420 SUBARU Catalyst System Efficiency Below Threshold
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 P0420 code means that the vehicle’s control module has detected that the three-way…
P0420 PONTIAC Catalyst System Low Efficiency 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– Powertrain Control Module (PCM) Tech description As the code description implies the P0420 code means that the vehicle’s control module has detected that the three-way…
P0420 NISSAN 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 P0420 code means that the vehicle’s control module has detected that the three-way…
P0420 MITSUBISHI 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 P0420 code means that the vehicle’s control module has detected that the three-way…
P0420 MAZDA 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 P0420 code means that the vehicle’s control module has detected that the three-way…
P0420 LEXUS 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 P0420 code means that the vehicle’s control module has detected that the three-way…