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Empty inlet for a hose on bottom right of engine

Treeman

New member
Location
Texas
Car(s)
2009 Volkswagen GTI
So I’ve been working on my ‘09 mkv replacing the radiator fan unit, o2 sensors, and coolant temp sensor and I stumbled upon this random inlet that looks like it should have a hose attached to it. I really have no idea what this could be for or if it’s not vital. If anyone knows I would really appreciate it.
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GTI's

Drag Racing Champion
Location
MD
So I’ve been working on my ‘09 mkv replacing the radiator fan unit, o2 sensors, and coolant temp sensor and I stumbled upon this random inlet that looks like it should have a hose attached to it. I really have no idea what this could be for or if it’s not vital. If anyone knows I would really appreciate it.
View attachment 228404View attachment 228405


https://www.ecstuning.com/b-pierburg-parts/secondary-air-injection-valve/06j131097d~pie/

Not throwing a code for this issue??
 
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