Pls I want to get advice on what I should do about my 2004 honda accord v6 which is running rich in fuel. The check engine light has been on so went for diagnostic scanning and the following codes threw up:
P0139 : O2 sensor circuit slow response (bank. 1 sensor 2)

P0157 : O2 sensor circuit low voltage (bank 2 sensor 2)

PO430 : catalyst system efficiency below threshold (bank 2)

How do I address these problems n what could be the cause of the thrown up codes. Other possible solutions to address my fuel burning rich. waiting for expert advices.