2006 BUICK LA CROSSE P0411 ERROR, SAI INCORRECT FLOW DETECT

  • Tiny
  • richapg
  • 2006 Buick La Crosse

Computer problem
2006 Buick La Crosse 6 cyl Front Wheel Drive Automatic 38000 miles

The check engine light came on and the error code read P0411. I reset the code and the next day the error code was back. The car runs good with no noticeable performance issues. I have not found any vacuum hose leaks but I wasn't sure what I was looking for. I'm not sure what to look for and/or test next.

Sunday, June 15th, 2008 AT 11:39 AM

1 Answer

  • Tiny
  • brian 1
  • Expert
  • 1,071 posts

You have to see if the air pump is working first, you have to use a scan tool that can command the air pump on/off to see if it works.A code like this is hard to answer, it code be a number of things, from a blown fuse to a bad relay or a bad air pump, even a blocked hose to the air pump.

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Sunday, June 15th, 2008 AT 7:58 PM

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