I think that means that my Pre cat bank 1 (RHS) sensor has failed.
Am I right?

Having searched the net I am struggling to find a suitable part, Land Rover parts seem to be hugely expensive compared to OEM Denso parts
So before I ask Rob at Duckworth's does anybody know of suitable parts and can provide a link?

Many thanks
David Range Rover 4.2 Supercharged 2006
Ford Focus EcoBoost 1.5 2017
MG TF 2003

Previous Cars of note
Land Rover Discovery 2
Jaguar Mk2 3.8 - Company car
MG Midget 1974 - Concours

Here's the link to the ebay supplier that I sourced the catalysts from by searching on the part number:

https://www.ebay.co.uk/usr/myautopartswholesale

I’m starting to get some error codes some 3 years on after lockdown, but don’t know if it’s due to lack of use and if its the sensors or the cats?

HTH

Cliff

Thanks for the link.

Does anybody think changing both pre cat sensors is advisable? and secondly the manual suggests that you have to disconnect the exhaust from the manifolds, release the front exhaust hangers to get access, is this really necessary?

Thanks in advance
David Range Rover 4.2 Supercharged 2006
Ford Focus EcoBoost 1.5 2017
MG TF 2003

Previous Cars of note
Land Rover Discovery 2
Jaguar Mk2 3.8 - Company car
MG Midget 1974 - Concours