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EVAP code(s) P043E and P2402

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rfm77555  
Posts: 2
Joined: 13 Oct 2010, 08:17
Year and Model: 02&04 s60/ 12 xc90
Location: PA
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Post by rfm77555 »

2012 XC90 3.2 AWD 162K miles. I am owner for just over 1 year w/o any major issues until.......
Murphys law - This month it's due for PA inspection (had it scheduled for yesterday). Tuesday last I get CEL with codes in topic title.
No drivability issues present so I clear the codes and next day they both return.
Hoping for a little luck I clear again on Thursday before inspection and attempt to drive enough to reset all OBD readiness monitors prior to the inspection (fail to ready complete on 3 monitors and my scanner says EVAP codes "pending")
I don't know what that means exactly ??
Yesterday I removed EVAP purge valve and confirmed functional (can't blow thru it until 12v supplied where I hear click and can blow thru)
Last year I did repair PCV by replacing torn diaphragm under PCV "box"
When I start the vehicle I hear a repetitive (every 5 seconds or so lasting 1 second) sound (not a whistle but low pitch reverberating).
Sound is coming from diaphragm of PCV area.
When I pull oil fill cap or dipstick there is substantial rpm change and a fairly strong vacuum at the cap and dipstick.
I removed the PVC box and confirmed the diaphragm is in good shape.
What would cause such strong vacuum at the oil fill cap ??
My plan is to remove the vapor leak detection pump above/behind the spare tire and see if it is functional (can i bench test this component) ?
Any advisement appreciated.
Maybe replace the entire PCV box and diaphragm unit ??

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RickHaleParker
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Joined: 25 May 2015, 14:30
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Post by RickHaleParker »

It is the EVAP pump not the EVAP purge valve. Shorted wiring or shorted pump.
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1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
2017 Ford PIU. 3.5l, Twin Turbo, 365 Hp.
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2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. ( Killed by a plastic radiator. )
2004 S60R, B8444S TF80 AWD. Yamaha V8 conversion ( I moved, the project did not )
2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0. ( Transmission dead after sitting for a winter )

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