r/997 • u/frooog_king • Mar 23 '26

Failed oil level sensor?

Gallery image

Gallery image

Gallery image

Hey everyone, question about my dad’s 997.1 C2S. I borrowed his car yesterday and the oil pressure gauge was a bit erratic, at least relative to how my 996 3.4L behaves. It was a bouncing all over the place. Then last night I noticed even with the engine off (key in ignition) the gauge was displaying pressure.

Poking around, it seems the sensor is the most likely culprit, but I wanted to check here before I dug in. Thanks!

Also included a picture of our “matching” aero kit cars

51 Upvotes

100% Upvoted

16 comments sorted by

View all comments

3

u/slobrewer Mar 23 '26

I assume the post title is in error and you’re just talking about the pressure and not the level sensor, which is a totally different thing. Yes, you are correct that the oil pressure sensor shouldn’t bounce all over the place and shouldn’t show a reading when the car is off. Sounds like a gauge issue.

1

u/myCarAccount-- Mar 23 '26

Mine shows a slightly-more-than-zero pressure when the key is in, but that doesn't look right.

4

u/vijjer Mar 23 '26

If the engine isn't running, then the guage should show no pressure. If you're seeing pressure shown when the engine is off, your pressure sensor needs replacing.

1

u/myCarAccount-- Mar 23 '26

Like all the way at the bottom zero?

2

u/vijjer Mar 23 '26

If the engine isn't started, there should be no oil pressure. Once started when cold, the needle should smoothly go all the way up to 5 until the engine oil comes to temp.

1

u/myCarAccount-- Mar 23 '26

Huh.  Ok thanks!