Ever since I got my Y-pipe I have been getting this on and off..its been off for a about the whole winter and I figured it wouldnt be back..well last week it came back 0503..I need to know what bank is what on the front..the funny thing is that these O2 sensors are only a year and a half old..I guess they were ruined when the Y was put in...
is this (0503) detecting a bad o2 sensor on the front of the y-pipe or the rear of it...I wanna change this out asap because my milage is suffering alot..


-matt

 

0503---is Front Right Heated O2 Sensor..what one is that ??

-matt

 

I'm not sure which one it is but I know it's not the one right infront of the cat. There are two other ones that are on the y pipe. I would Think that it would be on the pipe that is comming off of the Exaust manifold that is closest to the fire wall.

 

This link will help. It seems strange tha the O2 sensor is bad after only 18 months. You may want to check the wirng as well as clean it.
http://forums.maxima.org/showthread.php?threadid=159952&perpage=15&pagenumb er=2]Link[/URL]

D

 

Link didnt work

 

go here http://www.courtesyparts.com/A32_O2-sensors.html

 

LINKY