Help with o2 Sensor Wiring (4 Viewers)

[glinskonian]

Hey All,

I've searched across Mud but couldn't find a definitive answer for this so posting here.
I recently replaced both o2 sensors on my 94 with these NGK 24080's after I was getting a persistent code 26 check engine. After replacing the sensors, I then replaced the original connectors with Deutsch connectors as I kept getting water intrusion inside the original connectors, which is a non-issue with Deutsche ones.
The problem is, I now have a code 25 check engine (no more code 26), and I want to confirm that I connected the wires from the truck side to the o2 sensors correctly.
Also, I never had this check engine code until I 1) thoroughly washed the engine bay and under carriage and 2) replaced the original o2 connectors with Deutsche connectors. I did both of these jobs around the same time.

Here's what my current wiring looks like:
Right o2 sensor:
Truck side Sensor side
red/yellow > white
black/yellow > yellow
blue/white > black
grey > red

Left o2 sensor:
Truck side Sensor side
red/yellow > white
black/yellow > yellow
white > black
orange > red

Any help would be appreciated! Thank you

 

[jonheld]

Download the EWD from the resources section.

 

[glinskonian]

The EWD doesn't show the full sensor layout, at least no the one I have. It also doesn't have the layout of the wire colors for the NGK sensors of course,

 

[jonheld]

The EWD doesn't show the full sensor layout, at least no the one I have. It also doesn't have the layout of the wire colors for the NGK sensors of course,
View attachment 3741065

Are you saying that the sensors you have don't have 4 pins? I'm not sure what the confusion is. The pinout is clear on the EWD.

 

[glinskonian]

Does anyone have ideas on color to color wiring?

 

[glinskonian]

Bump

Still struggling with this one

The problem is with the right side sensor, and for whatever reason the wire colors on the truck side don't match what the diagram shows.
My wires are as following:
red/yellow, black/yellow, blue/white, grey

I also can't find a diagram that explain each wire color on the NTK sensor (heater, power, ground etc) so if anyone had that that would be a life saver.

 

[glinskonian]

Ok I figured it out, here is the wiring mapping for the left side sensor (using NTK 24080 sensors):
Gray > red
red/yellow > white
blue/white > black
yellow/black > yellow

First color is the truck side, second color is the sensor wire.

So far no more codes being thrown, but have yet to take it on a longer trip and know for sure it's behind me. Fingers crossed.

 

[glinskonian]

The right side sensor wires should be connected as follows:
Orange > red
Red/yellow > white
White > black
Yellow/black > yellow