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.

Airforce11: 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.

they need replacing


https://www.youtube.com/watch?v=gSxcR7gnfr4

http://nissanhelp.com/diy/obd_codes/p0157_honda.html



https://www.youtube.com/watch?v=XEVoV0RG-0g


for the catalyst code change the sensors 1st then erase the code then drive and see if code PO430 comes back

ZIM DRILL:

they need replacing


https://www.youtube.com/watch?v=gSxcR7gnfr4

http://nissanhelp.com/diy/obd_codes/p0157_honda.html



https://www.youtube.com/watch?v=XEVoV0RG-0g


for the catalyst code change the sensors 1st then erase the code then drive and see if code PO430 comes back

Tanx for d information.

Most likely your catalysts have been removed and no o2 sensor modification was done.
There's nothing wrong with your sensors

nissparts: Most likely your catalysts have been removed and no o2 sensor modification was done.
There's nothing wrong with your sensors

pls can u explain in details as I dont want to waste my money in buying O2 sensors n d problem persist. What do u advice I do to overcome these problem. Wat kind of o2 modification that is expected to be done should incase the catalyst re removed or hv gone bad. Anxiously waiting for ur response.

nissparts: https://www.nairaland.com/951734/explaining-catalysts-catalyst-codes

Thanks for the information. How do i get the spacers since i reside in abuja. i will like to get a pair to place on the two oxygen sensors in front and behind the engine. How much does the oxygen sensors cost.

Also,does installing the spacers improves fuel economy? Stil waiting for your response.

You can send details to ibisyerdig@yahoo.com

Spacers are only for the rear sensors. None required for the front.
I am currently out of stock for the spacers

nissparts: Spacers are only for the rear sensors. None required for the front.
I am currently out of stock for the spacers

Thanks for the quick response. When you meant rear sensors, is it the one that is behind the engine that is close to the dash board or the one that is close to the radiator. i know there's another one under the car. Waiting game activated.

Rear means bottom.
The one under