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check engine light high voltage from oil pressure switch?

Posted: Mon Dec 24, 2018 3:57 pm
by jj55chevy
is anyone familiar with this condition? I just bought my 2012 Caprice PPV a week ago and the check engine light came one. I took it to O'riely's and they scanned it, came up as high voltage from the oil pressure sensor. Should I roll the dice and buy a $70 switch and hope that is the problem or are these cars known for some other ailment that would cause this? any help would be greatly appreciated!!

Re: check engine light high voltage from oil pressure switch?

Posted: Fri Jan 25, 2019 6:48 pm
by jj55chevy
just an update: it was the oil pressure sending unit...$70 later and it's all good!

Re: check engine light high voltage from oil pressure switch?

Posted: Sun Jan 27, 2019 3:51 pm
by Mooseman
Good to know. 90% of the time, it's a fault with the sending unit.

Re: check engine light high voltage from oil pressure switch?

Posted: Sun Jan 27, 2019 4:28 pm
by jj55chevy
Mooseman wrote: Sun Jan 27, 2019 3:51 pm Good to know. 90% of the time, it's a fault with the sending unit.
I just wanted to hear that before I bought one...thanks

Re: check engine light high voltage from oil pressure switch?

Posted: Wed Feb 06, 2019 8:46 pm
by SS396ELKY
I had this exact code this morning P0523..
What brand switch did you buy..?
And where is the switch located...?

Re: check engine light high voltage from oil pressure switch?

Posted: Fri Feb 08, 2019 6:11 pm
by jj55chevy
SS396ELKY wrote: Wed Feb 06, 2019 8:46 pm I had this exact code this morning P0523..
What brand switch did you buy..?
And where is the switch located...?
I'm not sure what brand it was, I bought it at Orielys for about $74. it is located at the back of the engine on top just like the old small lock chevy oil pressure switches. it's actually not too hard to replace. they reset the code at orielys and I have had no problems since.

Re: check engine light high voltage from oil pressure switch?

Posted: Fri Feb 08, 2019 9:18 pm
by 119C3NJ
Buy AC Delco off Amazon, very close to chevy employee price! Grab a new screen while your at it. Deep socket short extension easy peasy

Re: check engine light high voltage from oil pressure switch?

Posted: Sun Feb 10, 2019 6:28 pm
by SS396ELKY
Well I changed out the sensor and it fixed the P0523 code problem... What a pain in the ass to change out this sensor and filter... It looks as though the sensor was seeping up through the electrical pins...

Re: check engine light high voltage from oil pressure switch?

Posted: Tue Feb 12, 2019 6:25 pm
by jj55chevy
yikes!! mine wasn't that bad...but you gotta admit, it's a cheap cure!

Re: check engine light high voltage from oil pressure switch?

Posted: Wed Feb 13, 2019 12:09 pm
by camrat68
Does anybody have a part number-either GM or parts store-for the sensor and screen? I tried finding it on GMPartsDirect with no luck.

Thanks,
Jim