P0520 Code Engine Oil Pressure Sensor/Switch Circuit Malfunction - Chrysler 300C Forum: 300C & SRT8 Forums
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Old 01-12-2008, 01:31 PM   #1 (permalink)
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P0520 Code Engine Oil Pressure Sensor/Switch Circuit Malfunction

I am still getting this code on my 2005 300C.

I thought maybe the last person that change my oil used 5W-30 oil (which I was getting p1521 code also then, but have since cleared the codes and that one isn't back yet)

What do I need to do to fix this?

Where is this sensor on the engine? Easy to change? Any part #'s for it?

Also, I found this one on Autozone's website. Is this the same part?

AutoZone.com | Shopping | Parts | Product Detail - Oil Pressure Switch

I gotta get this fixed since it won't pass inspections since it keeps throwing the MIL light.

Thanks!
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Last edited by Big K; 01-12-2008 at 01:32 PM.
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Old 01-12-2008, 02:53 PM   #2 (permalink)
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Here is a recent post by one of our forum experts, fnkychkn, posted
here.

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Old 01-12-2008, 03:08 PM   #3 (permalink)
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Thanks bruno. I was just about to paste the same thing from the service manual as what was in your link for possible causes. Interesting, in the manual they suggest a direct correalation to ensuring the correct oil viscosity has been used. The OP mentioned a previous error in that.

I think I'll just post the pages of the service manual as it applies to this code in a few minutes.

Bernie
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Old 01-12-2008, 03:10 PM   #4 (permalink)
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Thanks guys.

Any help is greatly appreciated!

Part # would be great also
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Old 01-12-2008, 03:19 PM   #5 (permalink)
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Quote:
Originally Posted by Big K View Post
Thanks guys.

Any help is greatly appreciated!

Part # would be great also
Here's the pages relating to that code. I'll have a look in the parts manual for the number & location. I have to be honest not much of this makes much sense to me, but for what it's worth...

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Old 01-12-2008, 03:34 PM   #6 (permalink)
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I believe #7 is the sensor you're looking for.

Bernie

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Old 01-12-2008, 04:08 PM   #7 (permalink)
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Wow Rambit! That information is very detailed and impressive. Thanks for helping out another forum member!

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Old 01-12-2008, 04:28 PM   #8 (permalink)
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Sweet! Thanks!

I found something else also from a SuperCharger Install!
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P0520 Code Engine Oil Pressure Sensor/Switch Circuit Malfunction-sending-unit.jpg  
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Old 01-21-2008, 09:54 PM   #9 (permalink)
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I got it changed today (in the freezing rain no less )

It wasn't too bad but the alternator bolts are a PITA. I am guessing they haven't been off since the factory and they ain't easy to get to either.

There is 1 you can see up top, and 2 under the alternator, all 15MM size.

But once those are broke lose and off, just swing the alternator out of the way(with belt off of course) and use a 1 1/16" Socket for the Oil Pressure Sending Unit.

After that, it is easy, it all goes on like it came off
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Old 01-21-2008, 09:57 PM   #10 (permalink)
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So, did it fix the problem?

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