!!HELP!! • Oil Pressure Low - Turn Off Engine

[Jacobgat4]

I will start off this post by saying this; if anyone at all has any sort of thoughts or suggestions or anything, I would greatly appreciate it if you took a second to reply to this post and let me know.

I drive a 2010 A4 2.0t. Last night I was driving to go pick up some food. I was probably about 1/8 of a mile away from my destination as I got a warning with 3 loud beeps and then the message that said "Oil Pressure Low - Turn Off Engine" but then it went away. I had no warning lights on or anything but as I was pulling into the parking lot it happened again so I pulled in and shut off my car. I went inside and got my food, it was probably 15 minutes later when I left. I turned on my car and waited a minute, got no warnings, so I drove home slowly with the flashers on which was about 3 miles. This morning on my way to work everything seemed fine, no warnings or lights but I still took it easy. When I left work everything seemed okay, I drove about a mile and then my check engine light came on but that was it. No warnings or beeping. Then about 10 miles later as I was getting off at my exit I got the same warning as yesterday, and then I got it again right afterwards about 10 seconds later, so I pulled over and shut off my car. Waited about 10 minutes, turned on my car and drove the rest of the way home which was about 1/2 mile and got the same warning again right when I was pulling in the driveway.
I tried to check my oil level on the multimedia interface yesterday when it happened and today when it happened but it says "there is no information available at this time" or something along those lines.
This is the first winter I have had this car. Im not sure if that is a factor or not but yesterday it was around 30 to 35 degrees and today it is around 35 to 40 degrees.
If anyone has any thoughts on what my problem may be or any suggestions on what I should do, please let me know as I would greatly appreciate it and I would really like to avoid going to the shop, or even worse, the dealership.

Thanks in advance,

Jacob

[Spawne32]

Likely just the sensor going bad, which is by the oil filter.

[mtroxel]

The B7 2.0's were well known to have an oil pickup problem. Ice would form on the pickup. Hasn't been that cold in St Louis yet has it?

How long since the last oil change? Do you drive short trips?

[NoiseBoy]

I’d put money on a torn PCV diaphragm. I’ll let you do a search on how to test for it, but with car running see if you can pull off the oil cap. If you can’t it’s a good sign of a bad PCV. $20 at advance auto, 3 minute fix.

[audrobotic]

I would start with trying to find out the oil level. Most german car shops have a universal type dipstick to check. Sometimes it takes a while to register on the mmi after the hood has been opened.

[Jacobgat4]

Mtroxel, no it hasnt been too cold here. Definitely hasnt been below 20 degrees but been in the 30s and 40s for a couple weeks. I havent done an oil change since I got the car in April of this year. Most of my trips are just to work and back, about 20 miles round trip.
NoiseBoy, I will try to do that tomorrow and I will come back and let you know.
Audrobotic, I just checked the oil level on the mmi maybe 2 weeks ago and it was just a little bit under halfway.

Thanks everyone for the input and for responding so quickly. If anything else comes to mind or if anyone else sees this and has an idea please let me know.
Thanks again and ill make sure to keep everyone updated.
Jacob


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[mecg]

PCV valve/Oil Separator (same device).

[gbmarc]

How can a bad PCV valve cause low oil pressure? Most people seem to report misfires and other rough running when the PCV goes bad.
I would love my low oil pressure problem to be caused by a bad PCV valve but my car runs very smoothly even though the oil pressure is way below specs at idle and 3700rpm. If I remove my oil filler cap then it dies, but this doesn't seem to be a definitive test for a bad PCV. Other people report a stumbling and stuttering on removing the filler cap on perfectly healthy engines. Can anyone confirm this?
Mine is a 2011 2.0T and I saw no sludge in the oil pickup. I have replaced the oil pump, the oil control valve, both pressure switches and still I have low oil pressure.

To check the oil level you need to be at normal operating temp, switch the car off and wait 2 minutes. Then the MMI will give you a reading.

[Spawne32]

How can a bad PCV valve cause low oil pressure? Most people seem to report misfires and other rough running when the PCV goes bad.
I would love my low oil pressure problem to be caused by a bad PCV valve but my car runs very smoothly even though the oil pressure is way below specs at idle and 3700rpm. If I remove my oil filler cap then it dies, but this doesn't seem to be a definitive test for a bad PCV. Other people report a stumbling and stuttering on removing the filler cap on perfectly healthy engines. Can anyone confirm this?
Mine is a 2011 2.0T and I saw no sludge in the oil pickup. I have replaced the oil pump, the oil control valve, both pressure switches and still I have low oil pressure.

To check the oil level you need to be at normal operating temp, switch the car off and wait 2 minutes. Then the MMI will give you a reading.

Typically it doesnt cause issues at all, but the PCV system on these cars is complex, and positive pressure under boost into the crankcase because of a failed PCV "manifold" if you will on these cars, can cause positive pressure in the crank case forcing oil out of passages that would otherwise be filled with oil etc. Do I believe thats the case here? No, but you can't tell unless you verify with a mechanic pressure gauge at the oil sensor port to determine if its a physical failure, or electronic failure.

[w43wu]

i had the same issue and apparently one of my balance shafts had gone bad


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[Novarider]

How can a bad PCV valve cause low oil pressure? Most people seem to report misfires and other rough running when the PCV goes bad.
I would love my low oil pressure problem to be caused by a bad PCV valve but my car runs very smoothly even though the oil pressure is way below specs at idle and 3700rpm. If I remove my oil filler cap then it dies, but this doesn't seem to be a definitive test for a bad PCV. Other people report a stumbling and stuttering on removing the filler cap on perfectly healthy engines. Can anyone confirm this?
Mine is a 2011 2.0T and I saw no sludge in the oil pickup. I have replaced the oil pump, the oil control valve, both pressure switches and still I have low oil pressure.

To check the oil level you need to be at normal operating temp, switch the car off and wait 2 minutes. Then the MMI will give you a reading.

I know you shouldn't just throw parts at it and hope it helps but at only $20 it's worth a try. Probably needs to be replaced anyway.

[gbmarc]

With the same symptoms as Jacob, I just disconnected my PCV valve pipe and plugged where it went into the inlet manifold.
I then ran the car and took oil pressure readings. They was no difference. All still too low. The PCV valve is having no effect on the oil pressure.
If you take the pressure readings even slightly before you reach operating temp you can get all excited and think you've found the problem but the the psi goes down another 6 or so psi when it finally reaches normal operating temp.

[doc_oc]

This has been a bit of an "unknown solution" for issue.
I did a lot of searching with no real solution.
I posted here and while there is some advice, (pcv, oil cooler...) the real solution eludes me:)
I'm not too good at using this tapatalk app...but if you search for my posts, I started a thread on this and also posted in other threads with the same subject.
In short, balance shafts could be the culprits, but my opinion is that intake cam shaft and cam bridge are the culprit. But I chose to stop throwing money at this engine and bought a used low miles engine that I will swap in.

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[S4_SH1640]

So, i received this Warning light on my dash: Oil pressure Low, Turn off engine.

There is fresh oil in there, maybe 500 miles. I checked the dipstick and it shows full oil.

What else should i check? I dont want to drive it if the oil pump went bad, do you think i would receive codes for a bad oil pump?

[maquino]

I wouldn’t go around taking apart your pcv with the car on. You’ll rupture your RMS and win a $1000+ repair. Take your car to a shop.

[audrobotic]

I wouldn’t go around taking apart your pcv with the car on. You’ll rupture your RMS and win a $1000+ repair. Take your car to a shop.

Good advice. Two years later.

[doc_oc]

If people would only hit the search button!!!!

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[Theiceman]

So, i received this Warning light on my dash: Oil pressure Low, Turn off engine.

There is fresh oil in there, maybe 500 miles. I checked the dipstick and it shows full oil.

What else should i check? I dont want to drive it if the oil pump went bad, do you think i would receive codes for a bad oil pump?

you would get what you got ... a low oil pressure warning.

On this model it could be just bad sensors ( there are two of them ) , and problems can be caused by the balance shafts, of course other things but these are the main ones we have seen. I would hate to say " its probably just the sensors" and then your engine seizes. If you are not comfortable with oil pressure gauges to measure actual value or getting your hands dirty and start swapping sensors as a guess. i would have a good independent shop check it out.
Low oil pressure is not to be trifled with.

[BeerBrent]

I got the low oil pressure warning and replaced the sensors. Never got the warning again.