[hrcd]

Background Info:
Posted this in the Xterra forum, but it seems less populated over there, so not sure I'll get a response. Since they're basically the same thing I figured I might could get better help here. I've had a couple of frontiers for a while, but I bought a 2012 Xterra for a great price a few weeks ago that needed some cleaning up & seemingly small work. One of the main things I wanted to fix was the check engine light, so I had the codes ran before buying, and got the following: P1148 (seemed like the "main" code), P1168, P0031, P0051, U1000. I decided it was such a good price I'd go ahead & take it, hoping it would be a simple O2 sensor fix. I just replaced the bank 1 sensor 1 today (or whichever one is behind the passenger front fender liner), cleared the codes, and they came right back. This time it seems to give P1168 as more of the "main" code, but it's still throwing all of the others as well except for U1000, but maybe that's because I'm using a cheap reader I've got, instead of the AutoZone one I used before buying... Not sure.

Looking for Advice:
I've done some research, and it seems like P1168 would be the bank 2 sensor 1, but I'm curious if anyone out there has dealt with something similar before, and if they think it's more likely the cats needing replaced? I spent about $115 on the first sensor, so they're not exactly cheap, and I don't want to spend the time and money replacing another if it's most likely the cats giving the issue. The fact I'm still getting a P1148 code is what's concerning me most. If there's anyone out there with advice on this subject I'd really appreciate it!

Vehicles Specs:
2012 Nissan Xterra S
4.0 V6
4x4
-----------
Seems to run great. Haven't noticed any hiccups transmission or engine wise... other than the codes


------------ UPDATE ------------

After taking it to my mechanic (thinking there was an electrical issue), they immediately recommended changing the bank 2 (driver side) O2 sensor. They quoted me $260 in labor to replace it, and I thought that was insanity, so I paid the diagnostic fee and took it home to do myself. Got it switched out today and so far it seems to be clear! Very strange that both of the sensors were bad at the same time, but I guess it's possible they went bad at different times and they've just been ignored... Who knows. I've only done a short test drive so far, so it's possible it'll be back after an actual drive, but it was coming back immediately before so I'm having a little more confidence this time. I'll update here if anything changes.

Thanks to everyone who helped me on this!

 

[Avalon]

Could it be an electrical issue? Usually with cats you'll get an efficiency below threshold code.

 

[hrcd]

Could it be an electrical issue? Usually with cats you'll get an efficiency below threshold code.

Yeah, so I ended up getting several responses over on the other forum, and that's what I'm leaning toward now. I checked some of the fuses, but that's about the extent of my electrical know-how so I'm taking it to my mechanic tomorrow to see if they're able to find anything. I'll update on here once it's figured out.

 

[Avalon]

Yeah, so I ended up getting several responses over on the other forum, and that's what I'm leaning toward now. I checked some of the fuses, but that's about the extent of my electrical know-how so I'm taking it to my mechanic tomorrow to see if they're able to find anything. I'll update on here once it's figured out.

My apologies no one else replied. That's why I wanted to try.

 

[hrcd]

My apologies no one else replied. That's why I wanted to try.

Appreciate it!

 

[ssundet]

Yeah, so I ended up getting several responses over on the other forum

Did you go to TheNewX forum? Great forum, a lot of info bleed over between these two sites but I think they may be bigger too

 

[hrcd]

Did you go to TheNewX forum? Great forum, a lot of info bleed over between these two sites but I think they may be bigger too

Yep, that's the one I posted in. Fortunately I did get some helpful responses, and have decided to take it to a mechanic because I think it may be an electrical issue. I'll update here once the issue is solved, as I'm sure whatever it is could also happen on a Frontier.

 

[ssundet]

Yep, that's the one I posted in. Fortunately I did get some helpful responses, and have decided to take it to a mechanic because I think it may be an electrical issue. I'll update here once the issue is solved, as I'm sure whatever it is could also happen on a Frontier.

Appreciate it. Good luck!

 

[RiceFrontier]

Ive been fighting codes with my Frontier for the past little while, and i also had the P1168 code and for me it was a simple O2 Sensor replacement that fixed that problem. But it just seems like when i fix 1 code another code pops up alil later and its never ending. I hate buying parts not knowing if itll fix the problem or not but for me having the CEL is worse than that and it drives me nuts. The fact your getting those other codes along with the main one makes this abit more harder to figure out. Anyways a good mechanic "should" be able to figure out and fix your problem.

 

[RamTest]

Did you go to TheNewX forum? Great forum, a lot of info bleed over between these two sites but I think they may be bigger too

TheNewX is bit sluggish over there. This thread is running there too.

 

[ssundet]

TheNewX is bit sluggish over there. This thread is running there too.

hmmm well, there's lulls on any forum I guess. I can go long periods without checking up here too.

 

[hrcd]

Ive been fighting codes with my Frontier for the past little while, and i also had the P1168 code and for me it was a simple O2 Sensor replacement that fixed that problem. But it just seems like when i fix 1 code another code pops up alil later and its never ending. I hate buying parts not knowing if itll fix the problem or not but for me having the CEL is worse than that and it drives me nuts. The fact your getting those other codes along with the main one makes this abit more harder to figure out. Anyways a good mechanic "should" be able to figure out and fix your problem.

Yeah, never fun when you're code hunting. Really hope it's just a small electrical issue that's obvious, but with my luck I won't be holding my breath for that lol. I'll be sure to update on here once I find out more.