Universal o2 sensor wiring

[prof15]

Hey guys,

I just got an universal after cat o2 sensor and I wanted to know if any of you have had any good or bad experience. Also is there a wiring guide for the 02 sensor I tried searching in the forum but the search engine seem to be down or not working. The o2 sensor I got was the Denso which seems to be the same brand as the oe and it even have the same wire colors.

The reason why I want to know if there is a wiring guide is because the diagram included in with the o2 sensor are confusing since it the position of the cables on diagram of the plug is different from what it really is.

I will install it by matching the wires with the same color, but I dont know if it matter how the two black wires which are for the hearter are connected.

[prof15]

I just installed the 02 censor..so now I just need to drive it so the computer readjust it self. I wired the cables matching the same color so I hope its the way its supposed to be.

[Argie]

Let me know how it goes.
I have been looking for O2 for quite some time now and i am thinking of buying one first,and see if that solves the problem.
Somebody sent me a link to a place that i can get it for 80 bucks,direct fit.
Also you can try this one:http://cgi.ebay.com/ebaymotors/99-01-Mazda-Protege-1-6L-O2-Oxygen-Sensor_W0QQcmdZViewItemQQhashZitem3a53b72074QQitem Z250512613492QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fA ccessories

[prof15]

^ after driving it for a few miles the cel came back, so I am going to autozone early tomorrow to see what code I am getting. I think it might be the wiring of the o2 sensor, so I will have to remove it and check the wires.

[Argie]

(crazy) it sucks!.
That's why i prefer to pay a little bit more and buy a direct fit,don't trust my self with wires ;-)

[prof15]

(crazy) it sucks!.
That's why i prefer to pay a little bit more and buy a direct fit,don't trust my self with wires ;-)

yeah lol..it sucks because the wiring and instalation is not hard at all, but the fact that the wiring diagram that came with the sensor it doesn't match the position of the wires in the connector for the old sensor.

It might be better for you to buy a direct fit since you have a 1.6, and that sensor its said to be different than the one for 2.0s

I made a post to a thread in the p5 sub-forum, were ppl where talking the universal o2 sensor but they never discussed actual wiring. I hope some there can point me out where to find the wiring diagram that is in forum since it seems that no one in the sedan side have used the universal o2 sensor.

[prof15]

so no one have ever use an universal o2 censor a protege?? or at least have any knowledge?

[$Associate$]

i did the swap using a universal o2 from bosch. you can find the wiring info specific for our cars on toprotege.com im on there and i found it through search in 2 minutes. i also have the 1.6 nd the new sensor runs great. goodluck

[$Associate$]

here it is i found it. hopefully the wiring for ur new oneis the same for bosch. preety straight forward. hope it helps

http://www.toprotege.com/forums/showthread.php?t=50869&highlight=sensor

[prof15]

Hey thanks I really appreciate it.. I didn't know about that forum I will take a look at it and join it. I will take a look at the at the bosch wiring guide and compare it to the one I have.

I also need to get the code that I am getting right now to see if its related to the O2 sensor before I remove it again. This should be straight forward since the wires are the same color and the o2 the car had and the universal are the same brand.

[prof15]

here it is i found it. hopefully the wiring for ur new oneis the same for bosch. preety straight forward. hope it helps

http://www.toprotege.com/forums/showthread.php?t=50869&highlight=sensor

the wiring for the bosch is different from the denso, so I will remove the o2 and weld it instead of using the little connectors that came with the sensor.

Do you know if it maters the order that you connect the two heater wires? because there is no indication if they can be inverted or not.

[cplagge]

DUDE i had a similar problem... got one of those OXT or OTX or whatever they are called headers, and the header pushed my OEM 02 right into the side of the slave cylinder... so as i was driving it, the o2 sensor wires melted. then shorted, and blew out a fuse. It took me like 3 hours to figure out it was a fuse LOL. So right now, my CEL is constantly on, and has been that way for years :( no fixes in sight, either.

[ucMP3]

What do you mean no fixes in sight? New fuse + new O2 sensor + New wiring = fixed. Or am I missing something?

[prof15]

DUDE i had a similar problem... got one of those OXT or OTX or whatever they are called headers, and the header pushed my OEM 02 right into the side of the slave cylinder... so as i was driving it, the o2 sensor wires melted. then shorted, and blew out a fuse. It took me like 3 hours to figure out it was a fuse LOL. So right now, my CEL is constantly on, and has been that way for years :( no fixes in sight, either.

So did you replaced the o2 sensor with a direct fit oem or did you got an universal one? I hope my problem is different since my cable have not shorted out.. I will take a look at the fuse box fuse box just in case.

But I need to get the code that I am getting right now, so I know whats causing it because the cell that it had before I changed the o2 sensor said it was a bad cat or exhaust leak.. so if the o2 is working the right way then it will mean the cat is the actual problem.

[cplagge]

What do you mean no fixes in sight? New fuse + new O2 sensor + New wiring = fixed. Or am I missing something?


Well, my options are: Plug the current o2 sensor hole, and drill a new one, or find a way to make the car thing my top o2 sensor is running fine. Not sure about either of those options...

Oh and to answer another question, i used both the OEM o2 sensor (70 bucks) and the bosch one (50 bucks) and they both ram right into the slave cylinder. I cant even screw it in without removing the header; thats how little room there is between the header and slave cylinder.

[ucMP3]

I have an OBX header, and my slave cylinder does not come close to conflicting with my O2 sensor.

cplagge - you don't have anything in your O2 sensor bung? It's just empty? You need to post some pictures, casue this doesn't make much sense...

[cplagge]

http://i21.photobucket.com/albums/b299/cplagge/IMG_0227.jpg

and
http://i21.photobucket.com/albums/b299/cplagge/IMG_0225.jpg


the brown thing is a bit of cardboard to prevent shorting of the wires.

[ucMP3]

What car/motor do you have? Its a 2.0? Maybe I'm being dumb, but that looks a little diff. than both the transmissions I've had in my car.

[cplagge]

I have a 1.8 ES. I bought the part from a vendor from this very site, who reassured me that it is the same design and fit... What i'd like to do is make some sort of a 90 degree connector for the current bung, so that the o2 sensor is just pointing the opposite way, and problem solved.

[ucMP3]

I have a 1.8 ES. I bought the part from a vendor from this very site, who reassured me that it is the same design and fit... What i'd like to do is make some sort of a 90 degree connector for the current bung, so that the o2 sensor is just pointing the opposite way, and problem solved.

Only problem is that will change the resistance of the sensor and alter the reading that it obtains. Which could possibly throw a CEL also. I doubt it would be very expensive to get a new bung welded on. Less than $100 for sure, probably ~$50.

[cplagge]

plus another 02 sensor :P durnit. Well thanks for the help

[prof15]

I think I got it right this time.. early today I went to auto zone and got the code for the cel I was getting. I dont remember the code number but it was about the o2 sensor heater saying that the signal was low. So after I got home I removed the o2 sensor and when removed the heat shrink one of the heater cable was loose. So I disconnected all the wires and reattached them again making sure that they didn't come loose.

I have driven the car for about 10miles so far with out the cell hopefully this is it.. I still need to keep driving it since the ecu is fully readjusted at about 40-50miles, between those miles the cat efficiency below threshold cel always comes up after resetting the ecu.

cplagge it sucks that you are having problems with the OBX header in the 1.8, is that the after cat 02 sensor that you are having problems with?

[ucMP3]

I think I got it right this time.. early today I went to auto zone and got the code for the cel I was getting. I dont remember the code number but it was about the o2 sensor heater saying that the signal was low. So after I got home I removed the o2 sensor and when removed the heat shrink one of the heater cable was loose. So I disconnected all the wires and reattached them again making sure that they didn't come loose.

I have driven the car for about 10miles so far with out the cell hopefully this is it.. I still need to keep driving it since the ecu is fully readjusted at about 40-50miles, between those miles the cat efficiency below threshold cel always comes up after resetting the ecu.

cplagge it sucks that you are having problems with the OBX header in the 1.8, is that the after cat 02 sensor that you are having problems with?

No its the primary 02 sensor.

The cat efficiency below threshold CEL should not come on at all. If its coming on, I would look into it.

[$Associate$]

if your code is p1141 its just the second o2 no exhaust leaks or anything. for the guy with the obx just fill that hole and get another one put in on the opposite side. problem solved

[prof15]

No its the primary 02 sensor.

The cat efficiency below threshold CEL should not come on at all. If its coming on, I would look into it.

It shouldn't but that was that is the code I was getting before installing the new o2 sensor. About two month ago I took it to a muffler shop to sheck if there was a exhaust leak and they told me that they didn't see or feel no leak and that it was the o2 sensor. A few weeks after I took it to my mechanic and after getting the code from the scanner tool he also told me that it was the o2.

So I changed the o2 sensor, and today I was driving in the highway and the trip meter hit 35miles the light came back on. In my way home I went by autozone and guess what the same code came back.

P0421
(Warm up cat system efficiency below treshold)

Probable cause

1-Exhaust leak
2-Check other services Codes first
3-Faulty Catalytic converter

So I will swing by my mechanic tomorrow to see what he will say.

[ucMP3]

Your cat is done most likely. Stand behind your car at a safe distance while it's running, you can sometimes smell your failed cat. It will smell like sulfur/rotten eggs. I doubt an exhaust leak would throw that CEL.

[cplagge]

Only problem is that will change the resistance of the sensor and alter the reading that it obtains. Which could possibly throw a CEL also. I doubt it would be very expensive to get a new bung welded on. Less than $100 for sure, probably ~$50.


for a little less than that, i found an O2 sensor simulator that would work... any experiences with these things?

[ucMP3]

Never heard of it.

[prof15]

Your cat is done most likely. Stand behind your car at a safe distance while it's running, you can sometimes smell your failed cat. It will smell like sulfur/rotten eggs. I doubt an exhaust leak would throw that CEL.

I will try that..because I initially thought it was the cat but after taking it to the mechanic, and the muffler shop. But now I think it can probably be a leak because the car have become a little bit louder and in the highway it gets even louder when I am at about 60-70mph. I will try standing behind the car and see if it smell like sulfur/rotten eggs.

Also does the smoke come out in any particular color when the cat is bad or a bad cat doesn't change the color of the smoke.

[ucMP3]

IIRC, it shouldn't smoke at all. Exhaust fumes are not smoke. If your exhaust has smoke coming out, you have other problems. i.e. burning oil or coolant.

[prof15]

IIRC, it shouldn't smoke at all. Exhaust fumes are not smoke. If your exhaust has smoke coming out, you have other problems. i.e. burning oil or coolant.

Sorry I ment exhaust fumes, english is my second languages and some times I dont use the right words. lol

[ucMP3]

Sorry I ment exhaust fumes, english is my second languages and some times I dont use the right words. lol

Its all good. :) I had a feeling you meant exhaust fumes, but I figured I would check to be safe.

[prof15]

I have found my exhaust leak!! In the last few weeks I notice that my card developed loud sound from the exhaust and today it finally came back to my mind to check the J pipe since during the summer I notice it was in bad shape. When I looked under the car I notice the one of the support for one of the bolts broke. It is still in place but I am afraid it can become worst, or develop some other problem.

So what are my options? can I still drive it like that for a while before I get it fix? do I just need another J pipe? or will it be better just to upgrade and get a header?

Here is a pic of the j pipe early this summer and the last two are from today..

http://lh3.ggpht.com/_otER5FVjGDs/SwOZ5-hgcsI/AAAAAAAAAYM/9dGTWXe8ftQ/s400/Broken%20J%20pipe.JPG
http://lh6.ggpht.com/_otER5FVjGDs/SwOZ6OEqAJI/AAAAAAAAAYQ/WL1kbAFHjg8/s400/Broken%20J%20pipe_2.JPG
http://lh3.ggpht.com/_otER5FVjGDs/SwOZ6NmjP8I/AAAAAAAAAYU/hsVsbBDdIo4/s400/Broken%20J%20pipe_3.JPG

[ucMP3]

Holy corrosion... :) Get new header/exhaust. It will be much prettier, lol. I'm sure you could get a shop to spot weld it for you tho...

[prof15]

Holy corrosion... :) Get new header/exhaust. It will be much prettier, lol. I'm sure you could get a shop to spot weld it for you tho...

Yeah I thats what I thought getting an after market header will be a better choice both for performance and for my wallet. I also thought that I can probably get it welded but it might not even be worth it..

What other options do I have besides the OBX header which is the one that most people use here? are there any other brand that is decent at around the same price or less?

[ucMP3]

OBX is the cheapest quality header you can get. You can try Ebay, but quality & fitment will be hit or miss.

There was a Nice Mazda 4-2-1 header for sale in the f/s forums yesterday that I saw. It was a very good deal, i wish I had that header and not my OBX. Although I am happy with my OBX. Check out the f/s forums, they are your best bet for a good deal.

[prof15]

nice thanks for letting me know I will take a look at the fs forum right now.

[ucMP3]

I read thru it nearly everyday, just in case... lol

[prof15]

I read thru it nearly everyday, just in case... lol

can you please give me the link ? I looked through the sale sub forum and I found one but I dont think is the same one you talked about.

Is this the one you are talking about??
http://www.mazdas247.com/forum/showthread.php?t=123759102

[damaster]

So I replaced my wife's rear O2 sensor (bank 2) with a Bosch universal and the damn thing threw a P1141 CEL.

I'm gonna have to re-check my wiring, but prof15 can you please tell me how you connected up the wires? I think I have them all wrong. Did you follow the Bosch diagram or something else?

Thanks

[prof15]

well the O2 sensor came with a wiring instructions so I tried to follow that as much as I could. I first looked at the position each wire was in the plug in the original sensor and looked at the wire instructions that came with the sensor. The senor I got was a Denso from Autopartswarehouse.com its the same brand as the OEM.

I also just found out that I need to replace the bank 1 o2 sensor now so I need to take care of that as soon as I can..

[damaster]

well the O2 sensor came with a wiring instructions so I tried to follow that as much as I could. I first looked at the position each wire was in the plug in the original sensor and looked at the wire instructions that came with the sensor. The senor I got was a Denso from Autopartswarehouse.com its the same brand as the OEM.

I also just found out that I need to replace the bank 1 o2 sensor now so I need to take care of that as soon as I can..

I wired it up correctly again, based on the toprotege link posted earlier. The CEL came back. Can someone tell me which fuse is for the O2 sensor and is that fuse in the main fuse box found in the engine compartment by the battery?

[prof15]

Yeah mine came back on too..I dont know where is O2 censor fuse but I am planing on buying the OEM replacements because I want to get rid of cel.

[damaster]

Yeah mine came back on too..I dont know where is O2 censor fuse but I am planing on buying the OEM replacements because I want to get rid of cel.
Got an ebay one now. Gonna try to wire it up, but the wire colors are different than the Bosch :(

[damaster]

So here's how I determined the wiring of the universal ebay sensor ($20) and it eliminated the CEL:

http://img848.imageshack.us/img848/9697/fullscreencapture312201.jpg