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1,2,3 or 4 wire O2 Sensor?

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Old 05-10-2007, 12:14 PM
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Default 1,2,3 or 4 wire O2 Sensor?

What are the o2 Sensors on late model camaros considered? 1, 2, 3 or 4 wire?
Old 05-10-2007, 12:18 PM
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LS1's have 4-wire sensors. Heater power, heater ground, signal wire, and signal ground.

Old 05-10-2007, 12:33 PM
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Ok, here is my other question...

I have hooked up a LC-1 in place of the b2s1 o2 sensor and wired it to do both my wb and nb. I hooked up the analog output 1 (yeller wire) to the pcm at pin #66 (purple wire) which I thought was the high side for that o2 sensor. I am only reading around 447-451mv on my scanner for b2s1. Do I need to configure output 1 on my lc-1 or should it stay at the default setting.
Old 05-10-2007, 12:43 PM
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I had the same problem every time I tried to get my LC1 to work as a NBO2. If you look at my diagram (and based on what some have said), I believe you need to have the low wire grounded. I never got to figuring out if that was my problem or not as I sold my LC1 for an LM1.
Old 05-10-2007, 07:55 PM
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Originally Posted by SSpdDmon
I had the same problem every time I tried to get my LC1 to work as a NBO2. If you look at my diagram (and based on what some have said), I believe you need to have the low wire grounded. I never got to figuring out if that was my problem or not as I sold my LC1 for an LM1.
I've got a PLX, and I was told I needed to ground the low side of the heater circuit. I did so when I installed mine and it works great, going through the EGR.
Old 05-10-2007, 08:53 PM
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I've got my wb going through my egr (pin #55) and my nb through my high side b2s1 (pin #66) Should I just plug the stock nb back up and zip tie the sensor up out of the way to ground the low side? will this work?
Old 05-11-2007, 09:26 PM
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Originally Posted by SSXLR8R
I've got my wb going through my egr (pin #55) and my nb through my high side b2s1 (pin #66) Should I just plug the stock nb back up and zip tie the sensor up out of the way to ground the low side? will this work?
I don't think so, it's been a while since I did mine, but I believe that the narrowband grounds through the connection to the exhaust. In other words, if it isn't screwed in, it isn't grounded.
Old 05-14-2007, 03:39 PM
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You right...I tried it this weekend and no luck...guess I will ground it to the frame/block or etc...




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