The original is probably either a Denso or Bosch and will have the Volvo OEM part number printed on it - as long as you get the original make with the right part number it doesn't have to be the Volvo OEM so use Denso's on line catalogue (
http://www.denso-am.co.uk/e-catalogue ) enter either your registration number or the year/model or the original part number - it will find the right sensor and by entering your postcode will find a local supplier.....price is approx 30% of the OEM!
If it is a Bosch - go to partsforvolvos and put in your vin number it will lead you to (
https://www.partsforvolvosonline.com...2a946fc999ddbc or similar) for under £30 - from partforvolvos it will (a) be the right part and (b) work as it should!
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The saddest moment is when the one who gave you the best memories....becomes a MEMORY
V70 SE 2004 2.3L T5 Geartronic, C70 2005 2.0T Automatic, Sold 2.4l 20 Valve Automatic Torslander Sold 854 GLT 20v Auto