Warranty for Emissions

[Stevevo]

Is the warranty for emission problems like P0410 with the Secondary Air Injector System Malfunction covered for my 2001 Aurora? I read somewhere that it is a 5 year warranty. It only has 70,000 miles on it and it came up with the code. Does anyone know the reason? Is it a quick fix or not. Tried to clear with battery and came right back on and then did it with Diagnostic tester and it came back on the next day.

[maxwedge]

Not covered over 3/36, only the cat and the pcm have extended coverage.