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Old 09-21-2007, 10:04 PM   #1
takeshi999
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Default help with p0011 and p0021 codes

my car is currently putting out these 2 codes for the avcs...i did a search and all i was really to find was that the filter in the avcs causes it sometimes...but i checked mine and mine are gone allready..i changed one of the avcs solenoids with a friends and still got the same codes...so what else could it be?
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Old 02-10-2008, 10:22 PM   #2
DirtTrash
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I'm gonna revisit this thread. Can someone please point me in the right direction? I have the same codes with minimal mods.
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Old 02-12-2008, 11:02 PM   #3
takeshi999
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my belt skipped 2 teeth...
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Old 02-13-2008, 03:20 PM   #4
Bruce Wayne
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Quote:
Originally Posted by takeshi999 View Post
my belt skipped 2 teeth...
I had the same cel codes, and mine also skipped 2 on the timing belt. You can take your timing belt cover off pretty easily and take a peak, and if the belt is fine then I'd try this since yours is a 04 model http://www.scoobymods.com/forums/showthread.php?p=20694 I think it only takes 30min or so.
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Old 03-04-2008, 02:31 PM   #5
byroll01
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I have a heavily (and kind of poorly) modified 2005 sti that I am doing work on right now and it is throwing these codes as well. I looked for the filters as per the TSB and I couldn't find them. I know the TSB said do not remove the other end of this oil line but are there filters in the other end as well?

My biggest problem is that the car is here because the turbo (fp red) is shot ( I mean way shot, so much play the blades have hit the walls and bent/broke) and I want to make sure it's not an oiling issue. Is there any way to check the oil pressure coming out of the oil feed line? Can I just hook up a cheapo oil pressure gauge and turn over the engine?

I hope I didn't get in over my head with this guys car!

thanks
byron
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Old 03-05-2008, 08:10 PM   #6
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nothin' here guys?
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Old 04-10-2008, 12:29 AM   #7
statik121
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Exclamation I'd like to offer a little insight...

This is for those of you that keep getting the re-occuring codes P0011 and P0021. Basically, this pertains to vehicles w/ AVCS. Yeah, there are bulletins on filters and other silly stuff that may apply to some peoples cars but there are other "underlying" issues at hand. Oiling problems to name one. Let me show you some examples that have passed through my shop within the last month (at least 4 different cars).


<p><img src="
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Old 04-10-2008, 12:32 AM   #8
statik121
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Ok, lets try this again..

This is for those of you that keep getting the re-occuring codes P0011 and P0021. Basically, this pertains to vehicles w/ AVCS. Yeah, there are bulletins on filters and other silly stuff that may apply to some peoples cars but there are other "underlying" issues at hand. Oiling problems to name one. Let me show you some examples that have passed through my shop within the last month (at least 4 different cars).


First off we have a view of the camshaft mains that are wiped out and no longer provide a good seal to feed enough oil pressure to the AVCS cam gears.



Here's a view of the matching camshaft that is also wiped out.



Here is a view of the same camshafts other journal that is wiped out.



Here is a view of the cap that mates to the head and also helps feed oil to the AVCS.



If you look closely at this side of the cap. The left side is bad and the right side is what it is supposed to look like.




All these were taken from an '05 STI that kept throwing the code no matter what parts we suspected and installed and was eventually subject to a teardown. These occurances are becoming more frequent and we're finding these on vehicles that have had their regular oil changes neglected. Typically 2000 to 5000 overdue for an oil change. So far, only on Legacy GT's and STI's (turbo). These cars are also 1-2 quarts low on oil. I imagine the AVCS is not receiving an adequate amount oil as well as the camshafts.

The other main factor, ABUSE. Keep telling yourself that your turbo mill is a race engine but it's not. It's a production engine with production tolerances.

The typical repair invloves replacing both cylinder heads, 4 camshafts, and sometimes the cam gears and even the block. If it has been determined it's due to neglect (and most of the time it is), this will not be covered under warranty. The labor is somewhere close to 20 hours.

Hope this sheds some light on your dilemma and helps clear up some of the misconceptions I'm finding here on the forums about these particular codes. Hope to see you soon! (For your oil changes of course)

Last edited by statik121; 04-12-2008 at 03:24 AM.
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Old 04-10-2008, 01:38 AM   #9
byroll01
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update, I pulled the AVCS banjo filter near the turbo and the guy hasn't seen the code since.
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Old 04-12-2008, 11:41 PM   #10
statik121
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Default Oh, yeah

Almost forgot to bump this one
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Old 04-19-2008, 07:53 PM   #11
josh06wrx
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i got the p0011 and p0021 codes.
06 sti 35k miles, 5k miles on a 30r set up.
how can you tell if the timing belt has skipped? is the car safe to even drive to the dealer to have them check it?
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Old 05-01-2008, 07:55 PM   #12
tedstriker
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Quote:
Originally Posted by josh06wrx View Post
i got the p0011 and p0021 codes.
06 sti 35k miles, 5k miles on a 30r set up.
how can you tell if the timing belt has skipped? is the car safe to even drive to the dealer to have them check it?
Bump, I'd like to know more about this. I have 1300 miles on a new shortblock with an oil change 500 miles ago. I threw this code, and am a little concerned...........
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Old 05-05-2008, 04:58 PM   #13
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update, i have at least blown a head gasket but ill soon have the block apart to see exactly what went wrong. this happened about 200 miles after the after i got these codes.
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Old 05-12-2008, 03:33 PM   #14
statik121
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Quote:
Originally Posted by josh06wrx View Post
i got the p0011 and p0021 codes.
06 sti 35k miles, 5k miles on a 30r set up.
how can you tell if the timing belt has skipped? is the car safe to even drive to the dealer to have them check it?
The car will run like **** @ idle and cruise, almost like a misfire and have a noticeable lack of power.
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Old 01-14-2009, 01:27 PM   #15
vanosgol
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Same problem with p0011 and p0021 codes....
I just finished up engine work, changed to CP pistons, new cosworth high flow, hi volume oil pump, and also new Brian Crower rods Stage 2..... 272.

i started the engine and it is doing fine runs great but i keep getting those two codes.....i have done 200 miles and engine is fine .. no oil ligth or anything wrong except for the codes......

I eliminated the small filter on the T that goes to the turbo and the passenger side AVCS... but them i keep getting the same codes.....

ANY HELP.....................
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Old 02-16-2009, 12:52 PM   #16
0BLUEWRX3
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Ok guys, 05 STi, stage II w/EM cobb. No other mods, threw a p0001 (but can't find anything on that code) It did say something about 'A' Camshaft Position - Timing Over-Advanced or System Performance (Bank 1) (at least from reading the code)

I was able to reset it through Cobb, but should I be taking it somewhere to have it looked at?
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Old 11-01-2009, 06:37 PM   #17
pk08
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I have a 2006 Subaru Tribeca with the same error codes P0011 and P0021. I was told that it was due to oil sludge build up from not changing the oil often enough!! Funny because I have the oil changed every 3000 miles. The last time they replaced the OCV valve and cleaned the oil sludge from the engine.....now only 3000 miles later the same error codes have surfaced again and the car is running rough and surging......Any suggestions?
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Old 01-31-2010, 08:58 AM   #18
jetski247
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bringing this up from the dead..................

how does a belt skip a tooth from just sitting?

how does a sensor get advanced from just sitting?

my car ran fine (except for the leaky fuel lines) and thats all i replaced and threw p0011 and p0021 and a tumbler valve fault code.
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Old 01-31-2010, 08:28 PM   #19
Kadiweednetty
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Default help with p0011 and p0021 codes

I would say try giving your maf a good cleaning with maf cleaner and do a reset. Also are you tuned for the short ram?
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Old 02-12-2010, 08:17 AM   #20
P1ayB01
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My car (06 STI) is out of warranty and I run Amsoil 0w-30 Signature Series with their filter and I get the P0011 code, I reset it, but today when I went to reset it, I had P0011 and P0021 Sometimes when I reset it, the car will go 300-500 miles without the code popping up, very weird behavior. Starting to wish I had bought that extended warranty.....
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Old 02-12-2010, 08:49 AM   #21
jetski247
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i erased mine and then it went away and hasn't come back yet but i don't have any funky idle or misfire or anything like that. mine went away when i changed the oil and removed the filters. even though the filters were spotless, i did have amsoil in there with about 3k on it, so i changed it and the code went away.

i did notice when i was under my car that i can see oil between the timing cover, or looks like its been drippin real slow around what looks to be a foam strip between the two, im sure if oil gets in there that it would help it slip a tooth being slick. it has me worried enough that i want to go get it replaced but not sure if i want to do that myself or not.

if funds allow, i'm gonna take it to a shop and have them replace it, the subie dealer here sucks a fat one. i went in to get a quote on repair, the tech said; let me go back and ask the machanic, then came back and said he wasn't here, he hadn't finished all his scoobie mechanic classes yet, he was only on 2 of 4......................so i didn't feel comfortable leaving it there.
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Old 02-12-2010, 07:23 PM   #22
ktmrider
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Search for "OCV" or oil control valve.
The banjo bolt filter does cause lots of these when it gets clogged.
I have also seen issues when running "alternative" oil weights and non-OEM filters.
My LGT started getting the codes when I ran some Seafoam in the crankcase for 50 miles ( long story why I did not change the oil when I added the SF ). Ended up removing and cleaning both AVCS solenoids, codes went away and have not come back after 4k miles.
So yes lots of possibilities, see a recent post that shows how to log them if/when it fails.
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Old 04-19-2010, 06:40 PM   #23
04trailsti
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Wheres the avcs soleniods
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Old 09-08-2010, 03:59 PM   #24
g00fy
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I'm also having a problems with P0011. I just recently got my car back from a rallispec shortblock swap along with refurbished heads with Kelford cams, new valves, retainers, springs etc.

When I first got the car back I was throwing P0011 & P0021. Got the car home, changed the oil, pulled both AVCS solenoids, inspect, cleaned and tested them, they worked fine. Put them back in reset the ECU, the codes did not come back immediately like they did the first time i just reset the ECU without doing anything.

A couple days later P0011 pops up again, but nothing else. I left it alone and before the day was out the P0011 disappeared. So for the past week and 1/2 P0011 seems to be coming and going randomly as it pleases.

Now i called the mechanic who did the swap for me, he told me he pulled all the screens out of my lines to prevent such a problem. The only thing I can think of is my passenger side AVCS solenoid is on it's way out, and i'm waiting to get ahold of a different solenoid to give it a shot.

My idle does occasionally suck, usually when the car is warmed up and i've thrown the code. I've also noticed that under normal circumstances my oil pressure jumps up near 90psi under any sort of throttle, however when i'm throwing the code my oil pressure doesn't like to go above 70 and the car feels like a total dog...
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Old 09-09-2010, 09:18 AM   #25
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Ideas? Anybody?
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