Question about 2005 Ford Focus
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Posted on Jan 02, 2017
SOURCE: 2004 ford focus,code p0411
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
Your P2004 code relates to inlet manifold air control actuator or solenoid on bank 1 stuck open, your code PO411 relates to secondary air injection system, (AIR ) incorrect flow detected. Obviuosly both codes are linked to one fault,
Posted on Oct 18, 2012
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