buickcentury2001
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- Nov 28, 2025
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I just bought this car for 3k and it's in great condition internally and externally. it runs and drives great with no issues.
About a month into having it I got 2 codes.
P1189 oil pressure sensor switch electrical circuit and p0440 vacuum leak.
I replaced the oil pressure sensor switch and the code for that came back after.
I have found the vacuum leak and i've ordered the part and im waiting on it.
After clearing the codes another code came in for transmission pressure solenoid electrical circuit which is p0748
These codes keep saying "electrical circuit" at the end on the scanner. is this possibly a short to ground or bad ground etc? im lost here idk what to do. Looking for advice before I take this into a shop and spend hundreds or even thousands. im a diy mechanic and im wondering if this is a job thats over my head.
About a month into having it I got 2 codes.
P1189 oil pressure sensor switch electrical circuit and p0440 vacuum leak.
I replaced the oil pressure sensor switch and the code for that came back after.
I have found the vacuum leak and i've ordered the part and im waiting on it.
After clearing the codes another code came in for transmission pressure solenoid electrical circuit which is p0748
These codes keep saying "electrical circuit" at the end on the scanner. is this possibly a short to ground or bad ground etc? im lost here idk what to do. Looking for advice before I take this into a shop and spend hundreds or even thousands. im a diy mechanic and im wondering if this is a job thats over my head.
