JDM_EK_621

ok i don't get it i replaced my fuel filter with a new one today and i went to start the car..it started fine then after a min the CEL came on and gave me the code 43 fuel supply I'm lost can anyone help me out

thanks

EE_Chris

Did you reset the ECU to clear the previous code?

Code 43 is usually set by a lazy primary O2 sensor (they have a service life of 75-90k miles and decrease pretty fast if the car was running rich or burning oil/coolant).

JDM_EK_621

yea i know i just replaced the o2 sensor to when i did this lol come to think of it i did them the same day and yea o unhooked the battery for 5 mins then started it and then it through the 43 code but no o2 sensor code now

EE_Chris

What kind of O2 sensor? If it wasn't OEM, did you have to wire it up or did it come with an OEM connector?

JDM_EK_621

haha i bought a bouch i am short on cash right now but yea i did wire it up with the OEM connector i am hoping i wired it righ tho

JDM_EK_621

from what i have read about and saw this is how i wired it

OEM........./........Boush
White...........Black signal wire
blk/grn.........gray ground
blk/wht.........white heater wire
blk/yel..........white heater wire

EE_Chris

It's more than likely your problem. Bosch O2's don't mix well with Honda ECU's - they seem to respond too slowly thus causing the CEL you have.

JDM_EK_621

well i dont have the cash for a new oem one thats anywhere from $160-$295 here is there any other ones that will work. the thing thats sucks is i am saving for wide band and then this happens