Question about 2004 Ford Focus
DTC P0411 - Secondary Air Injection System: Incorrect flow detected
Then check all the vacuum lines against the vacuum map on the VECI label under the hood. It's common for the original plastic lines to get brittle & crack, or they can be melted by an exhaust leak from the crossover tube on V8s, but if you have an I6, it doesn't have that tube.
Check IAC and IAC circuit. Check Secondary Air Injection pump, valve, circuit and hoses for leaks, blockages.
Here can find some diagrams: supermotors.net/registry/media/589993
Posted on Mar 16, 2011
Where is all the parts diagram for the ford focus on a incorrect flow detected if I were to fix it myself
Posted on Apr 16, 2014
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Posted on Jan 02, 2017
If the engines are the same they will fit, the splitport and the zetec use different trans.
Posted on Jul 22, 2009
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