i got a new o2 sensor on the o2 housing... how the heck are you suppose to wire this thing? there is a blue wire, white wire, and 2 black wire... the thing im confused about how do you know which black wire is which?? i know one is heater power and other is heather ground... i figured out the positive side and the negative side and the connection reads 12.46v which is good but i keep gettin cel light saying there is no activity coming from that bank...

how do i know if i got the wires right or not?? i know you are not suppose to solder aluminum wires which is how the stock o2 sensor wires are..so i use butt connectors...im gettin power reading but it doesn't seem right...any help would be good

 

anyone know?

 

me too please help!

 

If you bought a factory replacement, it would come with a plug on the end that takes all the guesswork out of it. It can only plug into the factory harness one way.

If you bought a non-factory generic, it should have a reference document describing which wire is which, no?

 

dont use a universal o2 sensor... They hardly ever work. Buy a OEM style sensor.

On the universal sensors 99.9 % of the time the black wires are the Heater wires and the white is normally the signal wire. the blue wire should be the feedback or input wire to the ecu.

 

I'll re-iterate.

Most universal 02 sensors don't work.