OEM CODE 0420CATALYST EFFICIENCY LOW BANK ...

2001 Ford Taurus

Tiny

Anonymous

March, 27, 2013 AT 6:09 PM

OEM code 0420
Catalyst efficiency low bank 1
oxygen sensor monitor the catalytic converters ability to store oxygen
Probable cause
Catalytic converter defective

1 Answer

Tiny

ASEMaster6371

March, 27, 2013 AT 7:05 PM

Cat has failed and needs to be replaced.
Roy

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