Hey All,

I recently was trying to diagnose a P0411 MIL on my 1997 Mustang Cobra and had ZERO luck finding solutions on the forums. So after painstakingly going over this super obscure emissions system, I figured I'd cover my process as well as include a diagram of the airlines that make up the Secondary Air Injector System.

So I bought a 97 Cobra at the beginning of August down in South Alabama. When I purchased it, the only outstanding issue that the car had was a P0411 MIL which I...

Heres how I fixed my P0411 Secondary Air Injector System (SAIS) MIL (1997 Cobra)