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Oil Level Sensor 1.8t

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Old 02-28-2006, 09:20 AM   #1
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Default Oil Level Sensor 1.8t

Please Help !!
I have a 2002 (December) A4 1.8t. The problem I am having is that the 'oil sensor' warning on the display refuses to disapear despite replacing the oil level sensor. (This is the oil can symbol with words sensor next to it and is yellow not red)

The sensor is the type that bolts to the bottom of the sump. Yesterday I replaced the sensor and then had my local garage clear the fault code, this lasted about 20 seconds when the car was idling and the warning message came on again.

In an effort to rule out a faulty new sensor I have fitted another new sensor today but still the message appears.
I will only get chance to run another diagnostic check tomorrow to clear the message, but shouldn't it revert to 'OK' as soon as the faulty component is replaced or am I correct to assume that it will need the code clearing anyway?

If the fault appears again (which I suspect it will)I am at a loss. Any suggestions would be appreciated.

(I have obviously checked the oil level and looked very closely at the wiring for any signs of damage and checked the relevany fuse).

Thanks....
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Old 02-28-2006, 09:39 AM   #2
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Default Sounds like your sensor is not the problem, I'd guess wiring. It may not be the wiring...m...

near the sensor. It also could be the module to where the oil level is reported back, which may be the ECU, or the cluster, or another generic electrical module.


I didn't know we had an oil level sensor on the B6. Hmmm.
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Old 02-28-2006, 10:08 AM   #3
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Sludge. How often did you change the oil?
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Old 02-28-2006, 11:07 AM   #4
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Default I don't think so.

the oil can and "sensor" means the oil sensor has dropped offline. IE rabbits ate through the wiring like has happened to me several times.

sludge would cause a pressure flag I'd think.
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Old 02-28-2006, 11:24 AM   #5
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Default The sludge buildup is keeping the oil from returning to the pan, thus setting off the oil level.

Rabbits eating is possible, there is a parts kit to shield the wires.

I stand by the original question. I am guessing average 7k between changes.
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Old 02-28-2006, 11:36 AM   #6
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damn wabbits
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Old 02-28-2006, 12:59 PM   #7
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Default Re: Sludge. How often did you change the oil?

I am not clear on the frequency of oil changes but the history I have got indicates every 10K.
However, there is no indication of a build up around the sensor. I do know that the vehicle has always used fully synthetic oil.

I would also think that the oil message that would appear if their was a problemn with the oil returning to the pan would be 'Oil Min'?

(The sensor is not being set off as such).

BTW the car has covered 50,000 miles.
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Old 02-28-2006, 01:02 PM   #8
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Default Re: I don't think so.

I agree with your theory. I believe a sludge problem would produce a pressure warning, or possibly a low oil level warning.
I have checked the wiring and shroud and there are no visible signs of damage.

(Fortunately their are no rabbits in my area!)
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Old 02-28-2006, 01:06 PM   #9
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Default Re: Sounds like your sensor is not the problem, I'd guess wiring. It may not be the wiring...m...

I am tempted to agree with the wiring problem. Though I was hoping for an easier solution. I guess it could be an instrument malfunction or circuit board etc...

Any more thoughts before I head to the dealer prepared to pay a fortune?
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Old 02-28-2006, 01:20 PM   #10
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Default the sensor flag has nada to do with the level

it means the output is not there or below range. It's not slude dude.
Not every engine problem=sludge
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Old 02-28-2006, 04:28 PM   #11
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LOL. No, but good luck and let us know how things turn out.
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Old 03-03-2006, 07:23 AM   #12
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Default Problem solved - Temp sensor.

Just a quick update.
Ran another diagnostic check that raised a fault with the coolant gauge circuit.

Replaced temp sensor today and oil sensor warning disappeared. Fantastic!!
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Old 03-03-2006, 07:58 AM   #13
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Good that the issue is solved. Weird that the oil warning was illuminated.
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Old 10-21-2009, 05:43 AM   #14
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Quote:
Originally Posted by Loxter View Post
Just a quick update.
Ran another diagnostic check that raised a fault with the coolant gauge circuit.

Replaced temp sensor today and oil sensor warning disappeared. Fantastic!!
Was this the engine coolant temp sensor that was replaced? i have the same exact problem and replaced the oil sensor that was mentioned previously in this same thread and i still get that damn yellow oil sensor light. this is the only thread that ive seen so far that has actually resolved this problem. gonna take a look at it today and see if i could get rid of this damn light!!
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Old 10-21-2009, 08:01 AM   #15
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10K is too long to go on a turbo engine - you need to go 5K max - Suggest you buy some oil detergent and run it for a couple of hundred miles and then drain and replace oil and filter.
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Old 10-23-2009, 03:36 AM   #16
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Default Yellow Oil Sensor light

reggie,
im not sure if you posted in the right thread. Still looking for the answer to my question. Yellow "oil can" sensor still on. changed oil, filter, sensor, and even saw that the wires were a little damaged, but that was fixed too and still senor light on. i reset the light and after driving for about 20 seconds i got the light right back. i saw that someone had replaced a sensor in the car but didnt specify which one it was. Anyone have any ideas?
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Old 11-11-2009, 08:46 AM   #17
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Default Oil Sensor Yellow... solved.

So after a month of troubleshooting this Yellow "oil can" sensor indicator. i change the sensor (150 bucks), wiring (10 bucks), coolant temp sensor (25 bucks), a couple vacuum lines (3 bucks),.... knowing that after all that troubleshooting it was a burnt 10amp fuse in the fuse box that i found myself, thinking that a dealership would know better... priceless.

And take note that its been to two Audi dealerships…

Lesson learned, always check the small things before you start getting your hands dirty. Props to this site!!!
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Old 05-21-2012, 01:41 PM   #18
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I know his thread is old but I am having the same issue. How can I Ho about fixing the issue? Which 10a fuse was replaced?
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Old 05-22-2012, 03:52 AM   #19
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Pull the cover off and look at the diagram on the back of the cover. Cover is located on the left side of the dash accessible only with the door open.
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Old 05-28-2012, 12:17 AM   #20
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Quote:
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Pull the cover off and look at the diagram on the back of the cover. Cover is located on the left side of the dash accessible only with the door open.
I did. I checked all fuses that are 10a. They were all good. I think my sensor could be done. When I did my oil change last weekend I did notice that the wire on the sensor was a bit beat. I touched it to see if it was good and I ripped off. I taped it back together though. Could this possibly be the issue?
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Old 05-28-2012, 12:17 AM
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18t, 2002, a4, audi, circuit, engine, faulty, find, level, light, oil, sensor, test, wiring, yellow

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