Code P1414 Emissions Controller

Does anyone know what part i need to replace to clear this code? I Have an ODBII Scanner and this is what keeps kicking up. It is on a 1997 Mercury Sable LS. Thanks ahead of time - Joe

Your code display stands for:
P1414 - SAI System Monitor Circuit High Input
I'm sorry, but I don't know what "SAI" stands for, but at least you know what to ask or tell the mechanic.

Secondary Air Injection (AIR) System