Replacing front Oxygen sensor 2001 C70 T5 Auto

[SteveSarre]

Hi all,

In case it helps.

I am replacing the front Oxygen sensor on my 2001 C70 T5 Auto.
(Getting MIL Malfunction Indicator Light and Torque app with Bluetooth dongle shows code P0134).

Searching on https://fcpeuro.com/ they say I need Volvo Part 8627750.
I can confirm that from the old sensor while it is still in the car.
Looking at the cable I can see that it has five wires.
The old sensor needs a 22m spanner or special socket to remove it.
My old 22m sensor socket has a slot that is too small to slip over the shielding that is around the cable at the sensor end.
I don't want to destroy the old sensor quite yet, so I cannot cut it and use a standard 22mm socket.
So I have ordered a Hilka socket from Screwfix. I'll see if that works.

Meanwhile, I couldn't see how to undo the wiring to the sensor. Removing the pipe from the air box to the turbo made it much easier to see what is going on.
On mine, the connector block had already come away from its mounting bracket, and I can now see that I just have to lift the white clip back and then the cable will unplug.

New Bosch sensor has been ordered, and I will report back when the job is done.

Steve