I think I've got to count for about 50$ for the part. But how can I know if i need the "Sensor located in front manifold/exhaust pipe before catalyst" or the "Downstream sensor, after catalyst"

I've got a Basic warranty on the car from PennWarranty(http://pennwarranty.com/Frameset.htm)which covers at the 'ENGINE - Cylinder block, cylinder heads, and all internal parts. Manifolds, valve train and covers, and flywheel. Camshaft and timing drive components. Oil pump and oil pan. Cylinder head and intake manifold gaskets are covered for coolant leaks only.'
I think this problem is part of my warranty, so I could maybe use the warranty if the part or parts costs 50$ or
100$.

@ HITMANinMI The damn manual lies just at my bedside table and I read, or better I gobble it as often I can.





Murat from Germany previous automobiles: Citroen CX 2.5 GTI Opel Kadett 1.4 1996 FORD CONTOUR GL/SPORT 2.0l 16V DOHC