It seems that everyone and their grandmother has a different color-code convention for 4-wire o2 sensors, which complicates matters when one is trying to wire up a replacement "universal" o2 sensor is it possible to determine signal-wire polarity on a 4-wire o2 sensor without relying on wire color-coding?. Wire colors o2 sensor. Have you ever wondered what the wire colors represent in your ntk oxygen sensors? here, we explain the function of each wire in 1,2,3 and 4-wire sensors, as well as wideband and universal sensors.
wire colors o2 sensor
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