I replaced the 02 sensor twice but keep getting the same code!! $##%#@@)(%$
11-14-2005, 05:13 PM
#1
I replaced the 02 sensor twice but keep getting the same code!! $##%#@@)(%$
I replaced the 02 sensor about a month ago when I received the 0503 code months after replacing it with a brand new Bosch 02 sensor from Napa. Then I received the damn code again 3 weeks after replacing it with a OEM nissan! I resetted the computer and 1 week later it comes back again!!!!! I check the connector it looks good, it's on nice and tight, wtf????? This is expensive, and annoying!! HELP.
11-14-2005, 05:54 PM
#5
Originally Posted by njmaxseltd
No such word in the english language. Didn't you have a thread up about this 2 weeks ago? 
Forgive me for not scoring a 4.0 on my org term paper. Yes I did have a thread and I replied I will reset the ECU and see if it comes back. Well, it did come back.
11-14-2005, 06:15 PM
#8
Originally Posted by Kevlo911
O2 sensor ground. Reground it, tap near the sensor and run a wire to the block or batt.
Umm forgive me for sounding like an idiot. But I'm lost. The O2 sensor as far as I know is plug and play. Screw it into the exhaust mani's and plug in the connector. Where is the actual o2 sensor ground located, are there seperate grounds for all 3 or just one main one?
11-14-2005, 06:44 PM
#10
Originally Posted by Kevlo911
I believe the ground goes to the Lower IM.
11-14-2005, 06:47 PM
#11
Originally Posted by HarrisH
There are several engine grounding points on the car. Where does the ground on the lower IM which you are referring to track back to?
Most of the sensors in the engine bay.
11-14-2005, 08:06 PM
#13
Originally Posted by Haibert88
Your ECU may need to be re-programmed, the dealer will take about $90 to do that...Call and ask your Nissan dealer and tell them about the history of changing the sensors (talk to a service advisor of course)
11-14-2005, 08:07 PM
#14
OH SH8! I think I replaced the wrong o2 in the first place. The front right is closest to the firewall DUH. I THINK I had replaced the one closest to the radiator, which according to courtesy parts is the FRONT LEFT. Can interchange the o2's to see if it's really the sensor that's bad?
11-14-2005, 08:43 PM
#16
Originally Posted by HarrisH
OH SH8! I think I replaced the wrong o2 in the first place. The front right is closest to the firewall DUH. I THINK I had replaced the one closest to the radiator, which according to courtesy parts is the FRONT LEFT. Can interchange the o2's to see if it's really the sensor that's bad?
11-15-2005, 06:39 AM
#17
Originally Posted by Kevlo911
Bad ground.
The o2's are grounded to the heads via the exhaust manifold and/or the grounding straps attached to the exhaust.
11-15-2005, 12:57 PM
#18
Originally Posted by nismology
What are you talking about? The o2's are grounded to the heads via the exhaust manifold and/or the grounding straps attached to the exhaust.
The o2's are grounded to the heads via the exhaust manifold and/or the grounding straps attached to the exhaust.Why does the FSM say to loosen and tighten the grounds on the lower IM when you are checking the O2 sensor then?
11-15-2005, 01:14 PM
#19
Not sure, but i do know these two things to be true:
1. The FSM makes no mention of a bad ground as a cause for an o2 sensor code.
2. The o2 sensor wiring harness doesn't include a ground wire. It's 2 heater wires and one signal wire. This means that the grounds that attach to the LIM have nothing to do with any o2 ground.
BTW, i just looked through the FSM and saw no instructions saying to mess with the LIM ground when checking o2's.
1. The FSM makes no mention of a bad ground as a cause for an o2 sensor code.
2. The o2 sensor wiring harness doesn't include a ground wire. It's 2 heater wires and one signal wire. This means that the grounds that attach to the LIM have nothing to do with any o2 ground.
BTW, i just looked through the FSM and saw no instructions saying to mess with the LIM ground when checking o2's.
Thread
Thread Starter
Forum
Replies
Last Post
mrc00l88
5th Generation Maxima (2000-2003)
7
01-25-2024 01:14 PM
maxinout93
5th Generation Maxima (2000-2003)
3
08-20-2015 02:17 AM