Hi,

I have a Volvo S80 2.4 Petrol, 2000 model. I ma going to change the fornt O2 sensor with an aftermarket sensor, however i have the following proble.

I have bought a universal 4 wire sensor the wire colors are, 2 x white, 1 x black and 1 x grey. on my car the wires are 2 x black, 1 x white and 1 x blue.

The question is, does anybody know what the wire colors on the original sensor represent?

thanks