rockseeb

What is the difference between a 1-wire sensor and a 4-wire sensor? My car is a 1993 honda civic with a 1-wire sensor which is not working. I recently obtained a new one but noticed it was a 4-wire sensor. Can I use it?

thesmogman

They are not interchangeable. The one wire heats up from the exhaust to produce the signal. The 4 wire has a heater element in it to heat it up faster so it starts producing the signal quicker. Also the 4 wire sensor might be a Air/Fuel sensor also which produces a different signal voltage wise.

09chaplak

cheeky bastard

pogeeboy27

iTrader: (3)

is tru tho. Connector probably different too.

Tim2179

iTrader: (2)

there you have it

$amGD3

narrowband v wideband? idunno

sikefcrx89

iTrader: (1)

wideband are 5 wires

4 wire o2's have the heaters

single wire are non heated

NVturbo

1 wire = "broke ***" sensor
4 wire = "has some money after bills" sensor

Seems simple enough