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Code P0523 turned off and on again?

Tiny
BHAMDOC1973
  • MEMBER
  • 2006 CHRYSLER 300
  • V8
  • 2WD
  • AUTOMATIC
  • 108,000 MILES
They do not reset. Engine seems fine no rough idle. Those I deleted and came back are attached. Now I deleted these and they went off except p0523. Turned it off and on again and all came back as active.
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Monday, October 10th, 2022 AT 1:38 PM

17 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,244 POSTS
The code P0523 means the engine oil pressure sender/sensor is too high. This can be caused by the engine oil pressure sensor being bad or the oil pump pressure relieve spring is stuck and not allowing the excessive oil pressure to be bled off. I would try to change out the sensor first here is the location of the sensor so you can change it out in the images below. Please let us know what you find. We are interested to see what it is.
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Tuesday, October 11th, 2022 AT 9:36 AM
Tiny
BHAMDOC1973
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Deleted the codes and started it, this is what came back all at once.
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Wednesday, October 12th, 2022 AT 7:23 AM
Tiny
BHAMDOC1973
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What about the other codes? Those are common, I am sure but not sure where to start. Deleted them and the same ones came back, 1, 4, 6 and 7 like in first picture, very minor idle roughness as in I see the motor is a bit shaky.
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Wednesday, October 12th, 2022 AT 10:10 AM
Tiny
KEN L
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Did you replace the oil pressure sensor?
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Thursday, October 13th, 2022 AT 12:23 PM
Tiny
BHAMDOC1973
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  • 1,545 POSTS
No not yet. I thought it was minor, I pretty much see it on all of these cars when I scan them. Or do you think it's a big deal?
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Thursday, October 13th, 2022 AT 12:34 PM
Tiny
BHAMDOC1973
  • MEMBER
  • 1,545 POSTS
Oh Geez, is this the one behind the alternator? I ordered one but just looked at the photo. I drove the car after the ABS lights went off. It drives great but feels like it is shuddering, so I was going to replace the fluid, but then remembered that maybe this hesitation/shuddering is maybe due to the other MDS codes I have. Once I change the sensor I will see if anything changes, but is it possible that this is the case?
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Friday, October 14th, 2022 AT 4:44 PM
Tiny
BHAMDOC1973
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  • 1,545 POSTS
Can you give me the part number as some of them are the oil pressure switch and others are the sensor?
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Friday, October 14th, 2022 AT 4:48 PM
Tiny
KEN L
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The oil pressure sensor points to the front of the car, the temerature sensor points to the right side of the car.
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Saturday, October 15th, 2022 AT 12:17 PM
Tiny
BHAMDOC1973
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The disconnected one? It's not even plugged in.
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Saturday, October 15th, 2022 AT 2:37 PM
Tiny
KEN L
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Yep, that will do it, can you find the conenctor?
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Sunday, October 16th, 2022 AT 2:06 PM
Tiny
BHAMDOC1973
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Yes.
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Sunday, October 16th, 2022 AT 2:48 PM
Tiny
KEN L
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What happens if you plug it back in? I would clean the sensor and connector.
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Monday, October 17th, 2022 AT 11:23 AM
Tiny
BHAMDOC1973
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I already bought one, don't want to plug it and put everything back together to find out sensor is bad. I'll let you know.
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Monday, October 17th, 2022 AT 11:54 AM
Tiny
BHAMDOC1973
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It was not even tight. So I replaced it and plugged the sensor. Also the other sensor by the oil filter was connected but also loose, tightened it. No leaks, connected battery and started it check engine light was on. Checked the codes and it was for the mds, deleted them and them did not come back yet. Motor revs good. No lights on so far.
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Tuesday, October 18th, 2022 AT 9:19 AM
Tiny
BHAMDOC1973
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So, I can at least delete them now and drive it but once I turn it off and on the same codes come back, the cylinders 1, 4, 6, and 7 inactivation.
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Tuesday, October 18th, 2022 AT 11:02 AM
Tiny
BHAMDOC1973
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I am guessing this is the fuel saver mode as some people say with these same cyl numbers. Where are these mds solenoids? Few people reported connection issues.
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Tuesday, October 18th, 2022 AT 11:08 AM
Tiny
KEN L
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Yep, this can be the problem, but you need to start a new question for this problem.

Please post your new question here, you must be logged in:

https://www.2carpros.com/questions/new

Cheers, Ken
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Wednesday, October 19th, 2022 AT 11:53 AM

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