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Old 05-18-2020, 11:02 PM   #1
warhammerjr
Scooby Newbie
 
Member#: 224461
Join Date: Sep 2009
Chapter/Region: NWIC
Location: Seattle
Vehicle:
2008 Forester XT
GRP

Default 2008 Forester XT P0011, AVCS, OCV Duty Help

I bought an 08 Forester XT just over a year ago. Gotten the oil changed at regular intervals. About a month ago I would notice slight a pulsing or loping acceleration if I held the throttle at a steady 50%. Only happened every now and then and wasn't too bad.

Last week it threw code P0011. Reset the ECU and it hasn't come back. I did some datalogging after googling about the code. My Left OCV Duty is about 10% less than the right consistently while under load. Did one log and then a second only a mile later and my Right AVCS Intake is at 0 all of the sudden and wouldn't change at all.

I live in an apartment that doesn't allow me to work on my car unfortunately. Does anyone have an idea of what it might be so I can have the shop check it out first?
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Old 05-19-2020, 03:24 PM   #2
danger1138
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Member#: 279525
Join Date: Apr 2011
Chapter/Region: Tri-State
Location: QUEENS NY
Vehicle:
06 Fxt

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Inspect the crank position sensor. Its located middle of block right beneath alternator. Wipe off the sensor with clean rag if it has bits of pieces accumulated.

Also, that code could have been triggered by the oil screens in the banjo bolts going to/from * AVCS solenoids and to/or from * turbo, getting gunked up.

This^^ situation tends to starve some components of oil. A common mod is to simply remove and get rid of these oil screens.
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Old 05-20-2020, 09:19 PM   #3
warhammerjr
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Member#: 224461
Join Date: Sep 2009
Chapter/Region: NWIC
Location: Seattle
Vehicle:
2008 Forester XT
GRP

Default

Replaced the crank position sensor in the O'Reilly's parking lot. Old one was pretty clean but I figured it couldn't hurt to replace it anyway.

I'm going to drop it off on Tuesday at the shop and let them work their magic.
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Old 05-22-2020, 06:13 AM   #4
bp05obxt
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Member#: 459799
Join Date: Dec 2016
Default 2008 Forester XT P0011, AVCS, OCV Duty Help

These codes are common on failing engines for various reasons.

The engine is worn and loses oil pressure and canít function the OCV properly.

The engine is worn and engine debris is pumped into the gallery feeding the OCV but the banjo bolt filter becomes clogged and restricts oil flow preventing the OCV from functioning.

Could just be a fluke though too

Compression test could be a good place to start to verify the condition of the engine in a basic premise.
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