Hey guys,
I have been running a check engine code on my '08 Grand Prix. 3.8L.
The code was P0411: Secondary Air Injector Incorrect Flow.
I replaced the Smog Pump (electric air injection reaction pump) as was told by many people. That was Saturday.
I then cleared the code with my code scanner. Monday my check engine light came back on running the same code. I checked all the hoses to make sure they were connected, and then cleared it again. Then today, the light came back on again with the same code. The guy at advanced auto said the only thing he can think of is it being the Air Cleaner Check Valve, which is a very expensive part. For starters, where is that located on the engine? and does anybody know if that is what could be what it is? and if there was a way to test it to fix the problem rather than replacing it? or what other things it may be? or if there is possibly a way to bypass it so that it doesn't run the code, and will still pass NYS inspection.
Any help is greatly appreciated.
Thanks
Jake