The car has 4 wire O2 sensors. The schematic in my manual shows 3 wires. The two black wires are for the heater element. What are the blue and white wires? Signal and ...?
SOURCE: Oxigen sensor 4-wires /colore of signal wire
most of the times the signal wire is the black one,
but is definly not the red or the red with stripe,
so is eithr the white or the black.
SOURCE: Installing universal Oxygen sensor
here is the 97 civic electrical diagrams. after you download and unzip the file, try 17252.pdf.
SOURCE: Replacing 2004 Hyundia Elantra O2 Sensor
Had the same problem You need to go to dealer and order an O2 sensor with California emissions. The wire will be longer and fit into the prong
SOURCE: o2 sensor wiring diagram
A new 02 sensor will come with new wires and connector. If not get back with me I think there is a repair kit for that problem.
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