Guys, Threw a CEL with 0707, 0901, 1001, all O2 sensors. They were original, so no problem replacing them all. I reset the CEL and now I have the codes again. Re-read the codes (via ECU), got the same ones, reset them, and now they are back. What can I do? Any suggestions would be great, thanks!

 

Betcha somebodys gonna say the famous words "READ THE STICKYS" nobody ever wants to help with o2 sensors no matter what the code............

 

Check the connectors to make sure they're on tight or just disconnect the battery overnight and let everythhing reset to see what happens

 

I got my car fixed wednesday. C E Light came back on thursday.

 

I hate to be the guy that breaks possible bad news - but the OP (turbolaw99) should go and check the O2 sensor fuses... IIRC they are in the fuse compartment inside the cabin... your sensors might have been fine all along...

 

Reset the ECU w/the 3 cycle method mentioned in another post. The fuses check out, but what I noticed is when I reset the ECU, wait 5 minutes and then start the car, no CEL, but when I then turn the car off and on again, you guessed it, CEL!!! What's the deal? Why would it come back on upon restarting the car? Thanks for the advice...

 

I am still having the CEL problem, please send help! Disconnected the battery as a last resort and still the CEL came back, please advise. Thanks!

 

Anyone??? No one has had this happen before?

 

I HAVE THE SAME PROBLEM
HELP!!!!!!!!!!
96 GXE AUTO
About 2 month ago my cel went on. that was o2 s1b2 and ks sensors. i chenged o2 only.
then 7 days later cel is on again o2 s1b1 and ks sensors i chenged co2 only.
then 7 days later cel is on again egr system problem,o2 s1b1,ks sensors.
so i chenged all egr sensors.
7 days later cel is on o2 s1b1,ks sensors again. so i chenged co2 again it was on warranty.
7 days later cel is on o2 s1b1 and ks sensor. i told my mechanik just erase the code ,becouse we chenged the same sensor 2 times allredy.
and today 7 days later cel is on again o2 s1b1 and ks sensor.
i did not chenge ks sensor yeat.
is it becouse my ks sensor is dead,but i replased it about 2 years ago and i have only 12.000 ml with that KS sensor.
but why the same o2 s1b1/b1s1/ comes up ,its brand new,and my mechanic did a test sensor is new.
some one told me its maybe i should chenge my spark pugs,but my spark plugs r 5 years old and i have only 26.000 ml on them.
PLZ HELP.

 

It Looks Like A Lot Of Us Has This Problem And No One Knows Anything About It? Come On Guys Im Sure Some One Out There Has To Know Something About It.

 

where is the fuse for the 02 sensor. i have 3 how do i know which is the bad one. i got the code as well but i read it by using my lab top and the plug. i dont remember which one was bad. where can i get a cheap sensor?? how hard is the work?

 

pls some one help us

 

I wish I could offer some great, groundbreaking advice but if no one can offer any DIY help then you might have to suck it up and head over to your local Nissan Stealership.

Has your fuel efficiency dropped off significantly since having all these supposed O2 sensor problems?

 

no its the same fuel economy,but like i told u i replace them and cel keep coming back

 

what brands of o2 are you using. are connections, fuses, everything okay? did u turn ur ecu correctly?

i had a wierd case of o2 cel coming on, and its the 0707. i went down to ck and it was fine. i relate it going to THIS particular gas station. the 2 times my codes came on was after putting 76 gas and it happened a few mins of driving with fresh gas. i never believed it but those have been the ONLY TIME ever that the ecu came up. people here said i was crazy or that the sensor was hashed. i have 65k on my car, maybe it does need changing. but since resetting, it has NEVER EVER came back on again ever. though i will one day eventually ck my ecu for the code and then change my o2. cuz u know if its really a prob its mostly gonan come back up again.

i've been getting about 200 of mostly pure city driving. though my air filter is due for a change.

what gas u guys using, brand? octane? maybe changinge ur fuel filter can help?? call me crazy but its all related in some way. just my humble opinions and experience. cuz if people think they know so much, then why would CODES COME up w/ fresh brand new o2??? makes no sense right?? so seek out a connection within the system.

 

fuse is near ur left knee under the mirror controls...its a 15A

cheap sensor, go to the group deal section and look for the O2 sensor thread...and it's very easy to DIY

 

Tanks to njmodi and everyone that replied. When the CEL 1st came on, my fuse was fine. Replaced the O2 sensors and cleared the codes when the described problem resulted. I should have checked the fuse again, b/c that was it! Blown fuse, replaced it and no CEL! Simple is always best, and thanks for the help and for the humbling experience.

 

glad you got the problem resolved.

 

I hate to hi-jack a thread for my first post, but I have no choice. I just want to confirm that the P0155 Heated Front O2 Sensor is the one with the connector by the radiator and connected to the exhaust on the drivers side. Once again sorry to hi-jack this thread.

 

Haynes manual shows P0155 as front, left bank so it should be the radiator one

 

k i will check mu fuse,i hope its gonna work,like i told u all befor,i chenged my 02 2 times, its a danso brand,and i use ammoco 93 gas. i let u know what happend,but the funny part cel goes on on the 7th day,it should go on by tue or wed lol,i hope not

 

Thanks JaTaN, and once again sorry to hi-jack a thread... FYI... Chilton's doesn't mention it... should have gotten the Haynes...

 

Checked my fuse its good ,o yea i allso cleened my stillen hi flow intake filter,couse it was black,i cleened it with k&n kit,now its orange again, i didnt cleen it for about 5 years.lol
cel is not on yeat see what happen i ll keep u all posted

 

Did Any Of U Fix The Problem?

 

any one?

 

Would a blown fuse alone trigger the CEL? I just bought 3 brand new O2 sensors and i was unaware that there was a fuse there. I checked it and it was blown.

 

Yes - the fuse powers the O2 sensors - no power to the sensors means the ECU gets no readings, so the ECU thinks the sensors are bad and sets the CEL. Replace the fuse, reset the ECU and see if you get the codes or not.

It surprises me that we have all these O2 sensor fuses blowing... I would suspect that at least one or more sensors are failing (shorting out in some way) - o/wise I don't see what would cause the fuse to blow.

 

my fuse is ok.
i chenged 02 sensor twise. b1s1 b2s1. my baby wennt true diagnostic and she is perfect no problems found,but cel with 02 b1s1 keep comming up.
WHY?

 

You might have a break in the main harness wires for that O2 sensor (not the harness that came with the O2 sensor, but the main harness in the engine bay that it connects to).

 

thank you.i will check that,and i will let you all know.

 

I had already replaced all three of my O2 sensors and I still had the code. Yesterday I checked the O2 sensor fuse that njmodi said to check and yes it was blown. I put in a new and cleared my codes and no CEL. Problem fixed, Thanks again.

 

good for u man.
like i told u all before,some one told me that evrything is connected, air filter mas sensor ,its all can triger o2.
so i cleand my stillen cold air intake./i didnt clean that sins i hed it ,5 yeras/it was black and all kined of sh...t was stock on it. so i used k&n kit to clean it.
and now its red again.
and its more then 7 days past no cel. i m knockink on the wood now.

 

It seems liche mechanics run away from these problems too. I am going through the same problems with code 1001 after replacing all o2's and KS. The manager of the shop now feels like maybe the harness could be the problem... **** that sheet

 

WELL after id did that cleaning, no cel yeat, its has been a month allready, thank god i m knocking on the wood as i type