Hello all -


I have 2007 Cobalt LS coupe with 112000 miles on it and it just recently threw a CEL with the code p0411 "Secondary Air Injection Incorrect Flow Detected". On cold starts I notice the SAI pump is still running but its much louder than normal. I checked some of the rubber lines up top for holes and/or loose connections but to no avail. Does anybody else have any input on this error?




Thanks

 

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bump for help

 

anybody have any advice?

 

Get it cleared and see if it comes back. If it does you could have a few things wrong, stuck relay that won't let the pump shut off, a block in a air line, I've never seen the set up on a cobalt but the vehicles I work on have a vacuum valve the goes bad could be that, or it could have just been a fluke. I say clear it and see what happens.