Oil sensor intermittent

2006 CADILLAC DEVILLE DTS
80,000 MILES
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JOHN DUKE
  • MEMBER
  • 1 POST
I just had a new headlight ballast installed on drivers side. When I started to drive the car, my oil pressure light came on and the warning dinging sound started. It told me to stop the engine and go to dealer for repair. The next time I started the car, the same thing happened. Then I started the car to take to dealer and the light did not come on and everything seemed fine. Is it possible that the car was making some computer adjustment to the new headlight?
Jun 12, 2018 at 2:53 AM
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STEVE W.
  • ✓Experienced Mechanic
  • 15,367 POSTS
Not very likely as the engine oil and headlights share nothing. I would first check the oil level just to be sure it is full of oil. Then look in the area that the work was done to see if perhaps they moved the wiring. There should be both oil level and oil pressure sensors on that car and I would expect both to come on as a warning if the oil being low caused a problem. It could easily be a failing oil pressure sensor but without a scan tool to read it you cannot do a lot unless it is in the failure mode. The shop or dealer can connect up and test much easier and tell you what they find.
Jun 12, 2018 at 9:52 AM
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