Oil Level Sensor - will it give a reading if plugged in but not in the sump?

[lincoln_dj]

Hopefully a quick one. It's a 3.0 tdi 2008 A5.

I had oil level sensor fault come up, so got the sensor swapped out (along with oil change), but still have the fault.

If I was to get another sensor and connect it up (so the sensor is just dangling in the air) - If it turned out that the initial replacement was faulty then I'd see a different fault wouldnt i? (low oil level warning, not sensor fault).

If I still get the fault then obviously would point to a wiring issue..?

Cheers, Adam.

 

[lincoln_dj]

So, turned out to be an easy fix.

The VCDS page for the fault doesnt mention fuses, but there is indeed a fuse for the sensor. In the engine bay, to the left where the ECU is. Mine was fuse #2 (5 amp) but on some models it's fuse #13.

Here are the fuse locations for reference.

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Also, this is the thread that made me realise there's a fuse: https://www.myturbodiesel.com/threads/oil-level-sensor-problem.15304/

Always nice when it's an easy fix!


For reference, here's my VCDS scan:
--------------------------------------------
4640 - Engine Oil Temp. Sensor (G8)
P0197 00 [047] - Signal too Low
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 6
Mileage: 241229 km
Date: 2022.01.20
Time: 14:21:54

Engine RPM: 683.50 /min
Normed load value: 48.2 %
Vehicle speed: 0 km/h
Coolant temperature: 37 °C
Intake air temperature: 9 °C
Ambient air pressure: 1030 mbar
Voltage terminal 30: 13.980 V
Unlearning counter according OBD: 40
Engine speed: 683.5 /min
Vehicle speed: 0.00 km/h
Fl Sys dvol Fl Cons All Tot: 1.29 l/h
Intake air temperature: 9.2 °C
Coolant temperature: 37.2 °C
Fuel temperature: 14.4 °C
Engine oil temperature: 37.1 °C