02 sensor output

H-top · Post by **H-top** » Wed Apr 06, 2011 8:49 am

G'day,

can anyone tell me the voltage output
range on an early EJ 02 sensor -3wire

can't find the info in the manual on the forum

Cheers,
S

Gannon · Post by **Gannon** » Wed Apr 06, 2011 5:18 pm

Its just a normal narrowband o2 sensor, so the voltage will vary between 0.1 and 0.9v roughly

2 of the wires are for the heater, and one for the signal. The ground is through the exhaust pipe

It wasnt till OBD2 vehicles (after around 2002) that the oxygen sensors started to become more complicated.