Disconnected air hose thingy/connector

[HighBread]

The lame subject line genuinely reflects my ignorance. Was filling my wiper fluid today and noticed this disconnected air hose. It was easy to reconnect, but I was seeking input on if it was a big deal and how it might have come undone.

picts show both states, before and after.

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[Tbone289]

That appears to be the breather side of the crankcase ventilation system. Unhooked, this would have been a fairly large vacuum leak. I'm surprised it hasn't thrown a code, meaning, I'm surprised it didn't show a MIL (check engine light) on the dash. The blue tab is a locking mechanism so, assuming it was locked on from the factory, somehow that release has been pushed to cause it to come loose.

The only "big deal" would have been if this sucked in any particulate matter through the throttle body, but that's not likely other than maybe some dust.

 

[Chops]

What TBone said. Maybe was disconnected when changing the air filter and not reconnected?

“Vacuum Leaks: If this hose cracks, degrades, or slips off, it introduces unmetered air into your engine. This will cause a lean condition, rough idling, or trigger a check engine light (like an OBD-II P0171”
Source - google

 

[Chops]

That appears to be the breather side of the crankcase ventilation system. Unhooked, this would have been a fairly large vacuum leak. I'm surprised it hasn't thrown a code, meaning, I'm surprised it didn't show a MIL (check engine light) on the dash.

Never mind - I googled

 

[Glen Baker LLC]

The lame subject line genuinely reflects my ignorance. Was filling my wiper fluid today and noticed this disconnected air hose. It was easy to reconnect, but I was seeking input on if it was a big deal and how it might have come undone.

picts show both states, before and after.

Who was the last one to change your air filter??

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