Post by
kingtal0n »
https://forums.nicoclub.com/kingtal0n-u29036.html
Sun Aug 23, 2009 4:15 pm
all narrowband sensors are the same.
they all have 1 single wire of a particular color that will submit 0-1V to the ECU. the rest of the wires are one of the following:
+12V input for the O2 heater-Ground input for the O2 heater-Ground redundant for the sensor base
Sometimes all 4 of these are present (4 wire O2)Sometimes 3 are present (3 wire O2)sometimes only 2 (2 wire O2) and sometimes 1 (1 wire O2)
In each case:3-wire O2 = (1 wire signal, 1 wire +12, 1 wire Ground)2-wire O2 = (1 wire signal, 1 wire redundant ground)1-wire O2 = (1 wire signal)
if it has 5-wires then its probably not a narrowband O2 sensor