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Nerdus Socialis
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2,410 Posts
Discussion Starter #1
On about 5k miles from an engine rebuild by subaru (covered under warranty). Had them replace timing and plugs while in.

Threw P0021 and Misfire in cylinder 4 about 4 weeks ago. Changed the oil right after as it was coming up due, after the first breakin change. Now threw P0021 on my drive home. Cars running completely fine. Now all the reading on P0021 seems to be on older WRXs, so I was wondering what I should do with this? Does mine have Banjo filters? I have yet to pull the cover to check the timing, but considering how my cars running, I figured it was fine.

Brought the car in yesterday, they replaced the solenoid, and now lights back on on my drive to work this morning. They said the sprocket on bank 2 was hanging, possibly, when the tech took it for a test drive.




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Premium Member
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10,932 Posts
Glad to see you are still around.

I'd honestly assume the cam position sensor is wonky before an actual cam or cam timing issue. How much does a sensor cost?
 

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Nerdus Socialis
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2,410 Posts
Discussion Starter #3
Glad to see you are still around.

I'd honestly assume the cam position sensor is wonky before an actual cam or cam timing issue. How much does a sensor cost?
Glad to see you’re still around as well!

As far as i was told, the oil control valve was the only thing that was bad. But i can imagine sensors are expensive.

I just had them do my timing belt, so I’m wondering if somehow that messed it up or, if something from the 2 blown motors ended up clogging it. Idk. It’s just so frustrating lol

I guess, I could also test electrical stuff too. Make sure they’re all working.


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Premium Member
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I don't blame you. Money pits suck.

I'd see if it's possible to check the voltages there should be some information somewhere on testing them. It's a cheap bit of diagnosis.
 

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Nerdus Socialis
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2,410 Posts
Discussion Starter #6
I don't blame you. Money pits suck.

I'd see if it's possible to check the voltages there should be some information somewhere on testing them. It's a cheap bit of diagnosis.
And it’s just so frustrating how much I’ve maintained etc, and still all these problems. And now that I drive a decent bit a day, I can’t have a car that’s not reliable.

Yeah. I’ll check that out. I have all the tools to check voltage so I’ll see what I can do.

The dealer did say though, that the cam sprocket they think was sticking as he “felt/heard” it while driving idk. And that they’d cover it most likely since they touched it last, and the part shouldn’t have a problem.


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