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Posted: Tue Oct 19, 2010 10:01 pm
by saint12
this code must come up a lot because i also have it

Posted: Sun Dec 05, 2010 11:13 am
by ZeroChad
That solenoid is located on a bracket underneath the battery try and brake master cylinder. I just yanked one of my car if anyone needs it. (See FS).

Posted: Sun Dec 19, 2010 2:01 pm
by NeonNick925
Bump on this...have this code. Ive replaced the downstream sensor twice and no luck...anybody have any info on how to get rid of this pesky CEL? Would LOVE to drive my Neon without that glowing in my face...its been on for about 2 years now and i really need to get rid of it so i can pass smof in July. Thanks in advancce for any help/info

Posted: Sun Dec 19, 2010 3:57 pm
by darthroush
How is the wiring? If there is bad wiring, replacing the sensor won't do anything.

Posted: Sun Dec 19, 2010 9:24 pm
by occasional demons

The heater is what gets the o2 sensor hot enough to start operating sooner, so the PCM can go into closed loop sooner. IDK what the resistance is across the heater elements, but you could ohm out the up stream, if you have a multimeter, for comparison. I imagine they both use the same heater. If the sensor is good, then the wiring or PCM is bad.

Posted: Mon Dec 20, 2010 8:36 pm
by NeonNick925
so im electrically dumb haha so where does the wire from the sensor go to, the pdc? or the pcm? i havent notice any cracking on the wires but ihavent traced um all the way to whereever they go

Posted: Mon Dec 20, 2010 10:25 pm
by occasional demons
The PCM sends the voltage to the heater.


You will need to ohm out the BR/VT wire from the PCM to the o2 sensor, and the BK wire to ground.

Just where the circuit has failed is going to be the hard part to find, if the sensor is good.

S112 Near Power Distribution Center
S110 Near Left Front Side Marker Lamp
G102 Near Left headlamp on top of the tie bar

Posted: Fri Dec 24, 2010 5:14 pm
by NeonNick925
thanks alot Bill ima try ohm'n the wire when i get some time off work. :thumbup:

Posted: Mon Jan 03, 2011 8:50 pm
by NeonNick925
got another dumb question...would it be possible to throw this code on a California car if you swapped ex manis to a R/T that you had a bung welded in for the O2 sensor? im thinkin i might swap back to stock if that the case

Posted: Wed Jan 19, 2011 8:38 pm
by fixitmattman
You can get this code from a piece of ice demolishing your downstream sensor. Found that one out...

Posted: Wed Jan 19, 2011 9:47 pm
by occasional demons
Missed Nick's last post, but no, the heater circuit has nothing to do with which manifold is there. Most of the time it is the o2 sensor. Or the wiring at the sensor damaged from road debris, accumulating ice on the wires.... which works wonders for tail lamp wiring on older vehicles too. :lol:

Posted: Thu Jan 20, 2011 1:53 pm
by NeonNick925
right on thanks again bill! saved me the hassle of swapping the ex manis only to see the dreaded light come back on. had a lil time the other day to ohm the wire out but couldnt find my multi meter for the life of me..fml. hopfully if weather permits,ima try on sunday when my pops has a day off as i kno he has a multi meter for work

Posted: Fri Jan 21, 2011 8:09 am
by gilly02le
Your lower sensor is probably just dead. Replace it if its never been done. The heaters fail in them, followed shortly by the sensor portion of them. If you just leave it, you'll have another code soon saying oxygen sensor signal centered(no rich or lean condition detected) Basically no reading.

Unless of course you've done something to the wiring for your o2 sensors recently, in which case, id check that first.

P0441 after fans replaced

Posted: Sun Aug 14, 2011 11:20 pm
by rfw0002
2005 neon sxt 72k miles code p0441 for evap issue . Just replaced cooling fans and check engine light came on. Is there something I could have bumped or disconnected causing cel to come on.

Posted: Mon Aug 15, 2011 12:25 am
by OB
Not that I can think of, sounds like coincidence. Did the CEL come on immediately when you started it up after installing the fan assembly? Have you tried resetting the PCM (disconnect the battery) and seeing if the code returns?

Posted: Mon Feb 20, 2012 7:55 pm
by D-Railed_Neon
post resurrection. How important is this sensor as my car threw P0441 today as well. Was driving to an appointment in the rain and stopped for a train crossing and boom on went the light followed by a ding came home and checked code to see p1648 (battery?) and P0441. Any help or advice appreciated.

Posted: Mon Feb 20, 2012 8:42 pm
by occasional demons
Mine ended up going off about every 6 to 8 months until I fixed the vacuum line. It isn't really critical to how the car runs, just gets annoying with the CEL coming on when you are cruising down the highway, and you don't know if it is something important or not.

On your 2002, the solenoid should still be under the brake booster. It is prolly a PITA to change, as far as reaching it. Most likely, it would be a reach up from under type job. IDK how easy it would be by removing the battery.

The battery code, may clear, or may never clear.

Posted: Mon Feb 20, 2012 9:12 pm
by D-Railed_Neon
Thanks OD. I agree the solenoid is gonna be a b&#ch Im in cahoots with Mike on a fuel line. I don't have a garage and it's currently pouring here in NE So, tomorrow Im gonna go take a look at the fuel lines under the car to the tank and canister to see if any of the lines have rotted. Figure it would be a good idea to replace those lines about now anyways. body is at 129K :banghead:

Posted: Mon Feb 20, 2012 9:24 pm
by occasional demons
Must be that fuel line I gave him the wrong PN for. If it is Caraudioaholic you are referring to. :lol:

Posted: Mon Feb 20, 2012 9:34 pm
by D-Railed_Neon
yep and yep. Figure here in NE between the retardedly hot and humid summers and the salt galore winters, the lines have probably seen better days. That plus, I realized I'm getting closer and closer to a full overhaul on the whole damn car. Mike is selling it cheap so why the hell not.

Posted: Mon Feb 20, 2012 9:37 pm
by occasional demons
Cool, at least he is finally selling it. If I knew it would fit a 1gn, I would have snatched it up already.

Posted: Mon Feb 20, 2012 9:41 pm
by 2003NeonSXT
GreeNeons03 wrote:I got this code today, checked the gas cap and it looks good. Where's the NVLD and the purge solenoid?
Purge is below battery tray on a bracket...NVLD is in the back right corner right behind the RR tire

Posted: Mon Feb 20, 2012 9:43 pm
by D-Railed_Neon
Boom! That answer was from a post almost two years ago but helps me today. Thanks man :)

Posted: Mon Feb 20, 2012 9:48 pm
by 2003NeonSXT
D-Railed_Neon wrote:Boom! That answer was from a post almost two years ago but helps me today. Thanks man :)
I hardly look at the dates :lol: ....Purge can be accessed by removing the air filter housing,battery and the battery tray

Posted: Mon Feb 20, 2012 11:19 pm
by D-Railed_Neon
Well it helps. From here does anyone have part numbers for both the purge solenoid and the NVLD for an 02. Please and thank you

Posted: Tue Feb 21, 2012 11:38 am
by jonnymopar
Just for reference, the NVLD was the culprit on my car. Pretty simple to replace once the passenger rear tire is off. I don't know how the operation of the NVLD compares to the 00-02 LDP.

Posted: Tue Feb 21, 2012 1:36 pm
by D-Railed_Neon
yep, after some further researching/trollin I read what the differences between 00-02/03-05 evap systems were. I stand corrected Jonnymopar :thumbup: and yes, I need PNs for 00-02 Purge solenoid and 00-02 Leak Detection pump Please and thank you guys.

Posted: Tue Feb 21, 2012 8:57 pm
by occasional demons
LDP PN's: viewtopic.php?t=28793&postdays=0&postorder=asc&start=30

4669569 SOLENOID, Proportional Purge $61.05

In case the bracket is badly rusted...
4891044AB BRACKET, Proportional Purge Solenoid $7.75

Posted: Wed Feb 22, 2012 12:26 am
by D-Railed_Neon
Thanks OD that ones gonna suck :banghead: but if it makes that disgraceful light go away it would be worth the peace of mind.

Posted: Fri Jun 15, 2012 2:34 pm
by gcretro
04 Neon SE. I had the CEL come on today when car was idling in drive.

Key dance says P 0441.

Would this be covered by the 10 yr power train?

If not, what hoses do I first check for? (before chaining anything)