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I have a 2004 Civic and the wires got pulled out of the oxgen sensor plug. This is the main sensor on the very front of the engine on the manifold. There are 4 wires that run into the plug to the left of the sensor. There are 4 wires, 2 black, 1 green, and 1 white. There are 4 holes in the plug above the lower base that clips it into the other half of the plug.
Does anyone have a wiring diagram that can tell me where to put the wires. They simply got pulled out and the sensor is good. A replacement is $230.00.
I have the same issue but with both 02 sensors all eight wires I need to ID what 4 go to which sensor and what color wires go to what color wire on each sensor
Hello i dont know if you have solved this since 2 years passed, here is a diagram
2 blacks are for the heater and white is for signal positive and gren/blue is the negative for the signal
2004 Civic oxygen sensor question 
