Lo, Errrmm Yeeeea! i jus replaced my cat & midsection and i looked after my lambda honestly (i bubble wrapped it).. And Errr Started the beast up An oh look the F*&^in Orangey system warning switch decides to light up.. :bang: i used a NEW gasket on the manifold to Downpipe/Cat and a smidge of Gummi Gummi.. Naturally i'm a bit annoyed My personal Diagnosis is the lambda has gone packin, Dose anyone concure? and how much do they cost?