It was the Service Manager who dealt with me - and said the pipe was a Jag requirement.
I wrote to complain (many other issues - see below) - and ask for pipe price refund - no reply after 5 weeks

Wrote to Area Jag Dealer boss - no reply!
Wrote to boss of Jag France - reply after 3 weeks from Client Services - "bring your car in for a check"!
I found that the Service Manager and others "left the company just after my problems!

For only some of the issues - see -

https://www.jaguarforums.com/forum/s...tchoff-189466/

See this video taken 2 hours after I got the car back from them affter a check for noise from the front of the car -


All is not well with Jaguar down here - I have had Jags continuously since my E-Type in 1970

But no more!

 

As I mentioned, they can be in rather tight (semi-welded due to the heat I suppose). I got mine out by cutting the plug off so I could get a 6-point socket snugly on and then applied (not much) torque via a jack then walked away for a while. A lot of things come undone if you do this.

(Once slightly loose, tighten and loosen a few times and gradually they come out.)

Sorry to hear of your experiences with jag dealer(s). However, to change these things you can go to anyone at all who's competent mechanically.

 

In the "Brand Review" topic section below, there's a topic thread for Jaguar Customer Relations.
You might contact them.

 

Is Upstream Bank 2/1 on right or left of the car as you look from the front?

And is it the one nearest the front of the car or the rear one exhaust side? (I think the latter)

(have looked at Jag Manual, and difficult to tell.

 

You will find the job is a lot easier if you have the special 22mm deep 1/2 inch drive socket with the cut up the side. It is snap-on S6176. Jaguar recommend the use of this tool.
Here is a photo:

 

Thanks everyone!
Was right side rear as you look from front of car.
Took me about 90 mins. Luckily it came off easily.
Have done several cycles and a couple of kilometres, and no warning light.
Fingers crossed!

 

I thought it may help if I gave the pages in the 396-page Jag Service Manual (difficult to navigate) regarding the O2 Lambda sensor, testing, replacement etc.
These are 1969-1970, 1984-5, 2054

P.S. It took 90 mins as above, but this was due to my having to check and recheck sensor location, and initially installing on wrong side!
So twice I had to take it for a spin and for a few engine cycles.
Interesting to note was that the electrical connector on the sensor was made in such a way that it would only fit the rear sensor connection, so removing any error in installation!

Next time, knowing what I know now, I reckon one hour max for the job including hacking up and removing the under-engine wind deflector

 

All directions on a car are as if driving forwards and looking where you're going. (Which fits with LHD/RHD, too, of course.)