Question about 2005 Chevrolet TrailBlazer
Can this cause other codes such as P0651 or are there other problems
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: I HAD 2008 CHEVY TRAILBLAZER
P0411 - secondary air injection system, incorrect flow. Basically it means that too much air is entering the engine because one or more vacuum tubes have failed.
Unfortunately this is not covered by the warranty and you will have to fix it yourself. Inspect every single vacuum tube until you find the cracked one then replace it - it's a simple job for someone who has done that before and really knows what he's doing. If you are not such a person then take it to a repair shop, it will cost you less than $250, part included.
Posted on Feb 04, 2011
SOURCE: What would cause a code P0411?
Code P0411 usually indicated problem with secondary air intake. Since you just had air filter changed, try running engine without the filter. If the code disappears the problems with the new filter or its installation.
Posted on Mar 19, 2012
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