Low oil alert on dash?

KEN2028

MEMBER
2018 VOLKSWAGEN BEETLE
2.0L
4 CYL
2WD
AUTOMATIC
40,000 MILES

I have the car listed above USA Beetle Coast (gas) with the OIL Alert on the Dash. I replaced the bottom pan. Engine Oil Level Sensor but the error still shows on the dash.

Image (Click to make bigger)

Tuesday, January 14th, 2025 AT 12:48 PM

4 Replies

KEN L

MASTER CERTIFIED MECHANIC
50,041 POSTS

Did you check the oil level manually? I would try a hard system reboot if the level is okay. This guide can show you how:

https://www.2carpros.com/articles/step-by-step-guide-performing-a-hard-system-reboot-for-your-vehicles-electronics-systems

If that doesn't work, I would run the codes to see if any are stored, also double check the wiring connector at the sensor to make sure there is a good connection. You might have a defective sensor on your hands, it is OEM?

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

It is straight forward system, one wire into the ECU. Please go over these guides and get back to us.

Was this

answer

helpful?

Yes

No

Tuesday, January 14th, 2025 AT 4:38 PM

KEN2028

MEMBER
17 POSTS

Oil is level and new full. Part was replaced with new. Code read with an advanced Xtool and x431. Can't locate the problem. Looked at the wires looks clean and good. Do you have wiring schematics of the part and to the ECU? It's three wires. I figure it's +, - and signal. I would like to trace it or to find broken connection.

Was this

answer

helpful?

Yes

No

Wednesday, January 15th, 2025 AT 9:24 AM

KEN L

MASTER CERTIFIED MECHANIC
50,041 POSTS

I would check the sensor ground first.

Here is a guide to help check the wiring with the diagrams below:

https://www.2carpros.com/articles/how-to-check-wiring

Also, check fuse #3 -7.5 amp in the B fuse panel which powers the sensor. Check out the images (below). Please let us know what happens.

Images (Click to make bigger)