Hi guys,

I have a problem with a rear o2 sensor - it has been replaced with a NTK replacement for my vehicle (54 reg 2.2 petrol vectra design direct). But i now come to realise that the old & new sensor wirings are different. So, i want to check what anyone has in their working car please, in order to check which is correct.

From the car, there is a plug for the rear o2 sensor with the following colour wires :

Red / blue
Blue / yellow
Brown / red
Blue / white

Now, can anyone look at their car, and tell me which car plug colours (as above) mate with the white/white/grey/black wires from the rear o2 sensor please ?

Many thanks.