oxygen sensor

[Chiquae07]

my engine light came on and i got it checked from autozone. they said that it was the oxygen sensor bank one section 2. so which one is this? the one in the header or the one right before the cat?

[nismo_pilot]

usually bank one means teh one on the header, it is the cheaper one as well so i would start there

[nismowu]

Originally Posted by nismo_pilot

usually bank one means teh one on the header, it is the cheaper one as well so i would start there

bank one means the two sensors on the passenger side (or the driver side, I'm not so sure about it)

I don't see the point of using 4 oxy sensors on a I4 engine....

[nismo_pilot]

oh thats right, he's got that crappy 2.0 hehehehe

[Chiquae07]

correct, the crappy 2.0 :rolleyes ...... that the parents wont let me modify at all so i gotta buy a whole new car if i want manual, instead of a tranny swap. they didnt even want me to have my 4 kenwoods with 4 seperate amps runnun 460w to each sub @ 4 ohms....made be take the shit back to the store....damn parents....

either way, i cant seem to find the 2nd sensor so im thinking its just the one on the header. i dont wanna pay 50 bucks if there is no reason for it and i change the wrong one if you know what i mean.

[nismo_pilot]

lol just yankin your chain man, at least your motor doesnt blow up from driving it you know what i mean

[Chiquae07]

i knew that...lol i think im going to start out with the one from the header. i cant figure out how to disconnect it though, seems like they glued the wire connecter it or something. unscrewing it is easy though.

[nismo_pilot]

a screwdriver is your friend, just dont damage the side that is connected to the car, thats funny, i unclipped mine really easily but i had to spend 30 min trying to get it out of the header.......lol

[Andrewh]

If it has dual exhaust, bank one is the passenger side if the engine was mounted normal. second one is after the cat. I only know this about the 6 cylinder nissan's, so can't be sure on whatever the 2.0 is.

[nismo_pilot]

Originally Posted by Andrewh

If it has dual exhaust, bank one is the passenger side if the engine was mounted normal. second one is after the cat. I only know this about the 6 cylinder nissan's, so can't be sure on whatever the 2.0 is.

lmao there are only two 6-cyl sentras in existence right now, and only a few more that have dual exhaust, on the 2.0 there should only be 2 o2 sensors, its the qg18 that has four i believe, either way bank one is on the header

[Chiquae07]

well, the light went off and i hurried ff the emmissions. i passed with flying colors. only thing now is that if it comes back on, well, then i really have to replace it...