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Oxygen sensor wire matching S40-V40 2001

posted by  someone claiming to be Volvo S40 on  Sun Jun 10 10:51 CST 2007 [RELATED]

Hi everyone!
I just bought Universal Front oxygen sensor for 01 Volvo S40 1.9L Turbo.
The wiring scheme that went with oxygen sensor is a little use since my OEM sensor has different colours than listed in manual for replacing.

The universal sensor has two white wires, grey and black.
OEM sensor has Green/White, Red/Black, Yellow/Green and White/Black wires.

I don't know which wires on OEM sensor are for Ground and Signal.

Is there way to determine on OEM sensor or on the car's connection which one is Ground and which one is Signal ? Maybe someone has similar wire setup on the car and has changed Front Oxygen sensor ?

Thank you very much.






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