I would think that the CEL should be lit up for the code that you received, but I could be wrong.

Does the CEL come on when you start the car? It should light up for a second or so on startup. If it doesn't, then the CEL bulb is probably dead.

As far as the P0430, there are a lot of posts on this code that can be found by using the search feature. Here is one of them.

96 Contour SE Duratec V6 24-valve 2.5L ATX 108,000 mi. Replaced: crankshaft w/ DMD, EGR valve (clogged), EVR, DPFE, PCV valve, evap emissions hose & tube (cracked), window regulator (broken), LH & RH PCV tubes, UIM gasket (leak), ignition coil