i keep getting fault codes from my rear lambda sensor. assume it's knackered so need to replace it.

i assume that the dealer may raise an eyebrow if i make a warranty claim on it, unless i remove the full de-cat- and it'd probably be cheaper to buy a new sensor than do the 100 mile round trip, in terms of time and fuel.

does anyone have any experience of lambda sensors for the MY01. what am i best buying, at what price and where from.

any help would be greatly apprecaited.

simon