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Signaling O2 sensor wire color code..

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Old 11-01-2010, 03:58 PM
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Signaling O2 sensor wire color code..

I have a really good question for all the Ford folks. What is the Wire color for the Upstream O2 sensor that is located on the passenger side exhaust manifold? I have the Mitchell diagrams in my Haynes manual and I also have the '92 Powertrain/Emissions manual and I cannot find anything corresponding to that sensor or what wire color it would use.

When I got the truck, the weather pack connector was completey destroyed. I re-wired it, but I must be wrong. I traced the wires back, and the color wires I have are YEL-RED and GREY-RED. Those 2 wires correspond to a knock sensor, which I could not find a connector from a actual sensor working from the block. there was a 6-pointed piece in the block but it is flush with the sides.

I'm at a lost on my code 41, but my assumption about having the signaling O2 sensor not working correctly leads me in this direction.
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Old 11-01-2010, 05:25 PM
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92 302 02 sensor

GRY-LT = HEGO BLU PCM pin 29
ORG = HEGO GND PCM pin 49
BLACK = Ground "E"
PPL-ORG = Fuse E eng compt f/b

YEL-RED and GREY-RED are Knock sensor conductors.

I'm at a lost on my code 41, but my assumption about having the signaling O2 sensor not working correctly leads me in this direction.

Your 92 would/should throw 3 digit codes no 2 so you miss counted or something is amiss there.
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Old 11-02-2010, 04:24 PM
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Thanks Danr1!

I was actually referring to the Signaling O2 sensor found in the pass. side exhaust manifold. It just has 1 wire.

I used the wire color for the HEGO sesnor to locate the bad ground running in the wire loom to the vehicle harness connector for the HEGO sensor.

The production date for my Blue '92 is 11/91 for my F-150, so it has only 2 digit codes from my Equus code reader. My Red '92 is 04/92 and it has 3 digit codes.
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