Trouble code P0420 means:Catalyst system efficiency below threshold
Trouble code P0420 means: Catalyst Efficiency Below Normal (Bank 1)
Trouble code P0420 means:Catalyst system efficiency below threshold
Trouble code P0420 means:Catalyst system efficiency below threshold
Trouble code P0420 means:Catalyst system efficiency below threshold
Bank 1 (driver side) catalyst efficiency failure. The driver side catalytic converter has failed.
Catalytic converter efficiency failure.
Trouble code P0420 means:Catalyst system efficiency below threshold (bank 1)
Catalytic converter efficiency failure.
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Bank one catalytic converter failure.