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Old 07-10-2016, 05:55 PM   #1
Sparc
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Join Date: Apr 2016
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Location: Washington
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2017 WRX
WRB

Default 2017 WRX PCV/CCV quick disconnect

It appears in 2017 Subaru switched to a new "quick" disconnect on the WRX front CCV system:



Getting this connector off sucked. You have to rotate it to the right and it will pop off. The service manual does not specify a special way to re-attach it. Anyone know the right way? I'm trying to finish up my AOS install.
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Old 07-11-2016, 08:57 AM   #2
Endika
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assuming you didnt damage the plastic fitting you should be able to shove it on till it clicks then give it s little tug to make sure it is on there
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Old 07-11-2016, 01:15 PM   #3
Sparc
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Yeah I couldn't get it to click. Appears these break without much effort and doesn't really show.

The quick disconnect fitting does come off the barb though if you remove the spring clip. Then a hose will fit on the barb fine. That is what I did for now.
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Old 04-29-2017, 12:31 AM   #4
deolson
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Quote:
Originally Posted by Sparc View Post
It appears in 2017 Subaru switched to a new "quick" disconnect on the WRX front CCV system:



Getting this connector off sucked. You have to rotate it to the right and it will pop off. The service manual does not specify a special way to re-attach it. Anyone know the right way? I'm trying to finish up my AOS install.
I'm getting the following codes after upgrading to a built block by IAG on my 2017 wrx, PO458 PO4AC PO4DB. I have the base map looaded that my tuner provided. My question is am I being overly paranoid, or do I have a loose. The tuner said they can be cleared when I get protune but that's after 1000 miles. I do not have an AOS.
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Old 05-11-2017, 09:02 PM   #5
Elbert Bass
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In the factory manual it indicates breaking that pipe and using a new pipe when reassembling. Once and done. The diagnostic connector (P04DB) is at the other end of that pipe and is reused with a new clamp.

P0458 EVAP SYSTEM (CPC) PURGE CONTROL VALVE "A" CIRCUIT LOW
P04AC EVAP SYSTEM (CPC) PURGE CONTROL VALVE "B" CIRCUIT LOW
P04DB CRANKCASE VENTILATION SYSTEM (PCV) DISCONNECTED

The top two codes are for the two purge control valves and the bottom is the vent system diagnostic connector. Did you delete or leave any of these unplugged?
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Old 09-26-2017, 04:39 PM   #6
Nathanhurley
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Unhappy Pcv Disconnected Code After Aos Install

Hello,
I Recently Installed The Crawford Aos System On My 2017 Wrx
, After Install Im Getting A Code P04db Pcv Disconnected.. I Have Checked All Hoses And Clamps And All Are Tight And Snug Put Code Wont Go Away. Anyone Have These Issues Before. Need Help.
Thank You!!
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Old 09-27-2017, 04:53 PM   #7
Sparc
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Did you not put the sensor back on the intake pipe? It's the drain hose from the AOS to the intake pre-turbo.
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