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2005 B7 2.0T FSI Quattro 32k Oil pressure warning!!

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by PA4ul83, Apr 5, 2014.

  1. PA4ul83
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    PA4ul83 New Member

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    [Apr 5, 2014]
    Hi guys, new to the forum and sadly first post is not a great one. Just purchased 2.0T Quattro 2005 with 32k and full history. Cambelt + waterpump done in Jan 14 so all seemed great.....

    Picked car up from garage this morning and after about 40 miles the oil pressure warning flashed up. Luckily it was about a mile from home and garage advised I let it stand for about 30mins and get it home which I did.

    Having looked on the net and various threads I'm a bit concerned but my question is that if the engine is still running perfectly and no noises or grinding has happened, will it have done little damage and is likely to be sump drain, replace strainer and check pump etc or once the light comes on has the damage been done? I've read of metal particles causing problem months down the line.

    It's under warranty for 3 months and the dealer has agreed for me to contact my local specialist and get them to assess the required work and providing it adds up they will pay for the work directly, anybody got experience of this problem which seems fairly common on these engines?
    Last edited: Apr 5, 2014
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  3. Giosabcsl
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    Giosabcsl Active Member

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    [Apr 5, 2014]
    Is this the 200 or 220 hp?

    And to be honest this has been cropping up a lot among the 2.0 T petrol engines.

    It can be a oil pressure sensor which are quite common and prone to going which is a £12 fix. But a simple scan of the vehicle through the OBD will tell you that.

    Otherwise in my case it was the oil filter was clogged and had some aftermarket k and n oil filter which are prone to causing the low oil pressure light to come on after around 4000 miles which was exactly spot on for me.

    More of the severe cases are the strainer is blocked there is a revised oil pick up which will help this issue.

    Also there are a few variables it can be something stupid like poor oil like when last was it changed did they use synthetic oil is it the right viscosity. The warning can come up as well if the oil is low. Even thou there is a slight for low oil but the pressure will be lower if there is less oil.

    The oil pressure only kicks in after 2000 rpm so if you standing still and the engine is cold and rev to 2000 rpm and the light kicks in then its definitely worth checking the oil and oil filter as well as the oil pick up because oil is at its thickest point when cold. But most of the time it will throw the warning when the car is at 90 deg and if you rev it near 2000 rpm it will buzz and warn you of low oil pressure. Then you might find its the oil pump but considering the car has such low mileage does seem strange for this to come up now.

    If the light comes up there is chance some damage is done but some cases there might no be any damage done. But usually when its a red warning on Audi it does mean it needs attending straight away.

    But let me know what there thoughts are once they have looked at the vehicle.

    I would say listen out for a noise but considering you new to these engines. I wont go that far yet.

    Otherwise keep us updated on what happens.
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  4. PA4ul83
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    PA4ul83 New Member

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    [Apr 6, 2014]
    Many thanks for the info. It's the 200bhp and the BGB engine code. I agree it seems to be a very common problem, I was under the impression it was the diesels more than petrol but again at 32k it's certainly put me off the car now. If the garage will pay to have it looked at and repaired I may keep it but I suspect they will pass out if some of the repair costs quoted on here get mentioned!

    I imagine an Audi specialist describing the car as unfit to drive would give me a solid case under the sale of goods act and enable me to return it for a full refund so for now I'm trying not to worry too much. It's hopefully being looked at on Monday and I will give an update when I know more.
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  5. Paranoid69
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    Paranoid69 Member

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    [Apr 6, 2014]
    My BGB had random oil pressure warnings, had the pressure checked at a local indie, no problem found but changed the pressure sender anyway. Issue persisted and turned out to be a partially blocked strainer, has that replaced with the modified one and has the oil pump checked over and rebuilt at the same time (pump was in good order).
    My car is at 123k miles.
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  6. PA4ul83
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    PA4ul83 New Member

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    [Apr 7, 2014]
    Bit of an update. I had the car taken to Autotechnik a local Audi specialist who initially advised the engine needs to be taken apart/front end stripped down to investigate. When I told the garage who supplied the car of this and that the technician (with 30 years+ Audi experience) thought the signs were not good they seemed to take notice - they have sprung into action and are as I type this on their way to pick up the car and trailer it back to their workshop. They are insisting that it will just be a sensor or oil strainer and are claiming "whatever needs to be done to fix it we will do". Alarm bells are ringing. They are doing everything they can to avoid refund but I need to know that any repairs are done properly which I fear will not happen in their attempts to save the pennies. Anybody know where I stand legally as I would think after fault appearing 2 hours after buying car and not being able to use it since would entitle me to a refund under sale of goods act? Car is certainly not fit for purpose!
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  7. ruairi83
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    ruairi83 Active Member

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    [Apr 7, 2014]
    Tell them.you have no confidence in car and would like a refund. Say if it is not processed asap then you woll contaxt solicitor. Better letting them know than then under impressions they fix and you taking it.back.
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  8. imran999
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    imran999 New Member

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    [Apr 7, 2014]
    Personally I would push for refund. low oil pressure can damage the turbo, which might not materialise till few months down the line when your turbo blows and your out with the warranty period.


    get rid of it.
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  9. bez101
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    bez101 Yorkshire & Humber Rep. Regional Rep VCDS Map User

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    [Apr 7, 2014]
    he wont get a refund if they repair
    if i was the dealer i would have picked the car up aswell
    cos the mech with 30 years audi **** wanting to strip the engine is gona cost £££££££££££££££££££££ in labout
    when its a quick scan if thats not the fault its sump off not a strip down.

    and with his 30 years in audi he should know its defo not a strip down.
    the garage cant bodge the job if its not a sensor they will replace pick up pipe and pump if needed.
    and save loads on the labour.
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  10. bez101
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    bez101 Yorkshire & Humber Rep. Regional Rep VCDS Map User

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    [Apr 7, 2014]
    if its damaged the turbo he will know as soon as the car is back out on the road it wont take months
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  11. PA4ul83
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    PA4ul83 New Member

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    [Apr 8, 2014]
    Thanks for the opinions and information, Bez is right I am unable to get a refund as the garage is offering to repair. I've had a call from them today telling me the car is mechanically fine and it appears to be the oil pressure switch. They have ordered the part and will have it fitted in the morning. I'm obviously a bit concerned about problems so early on in the ownership but if they are being straight with me and it was just pressure switch I can live with it for a while.

    Apart from a whining noise is there anything I should be looking out for with Turbo when it's returned?? Also what is the best oil and viscosity in your opinions for these motors?

    I'm considering taking out a good independent warranty for 12 months just in case. Will update when I know more.
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  12. madmike01uk
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    madmike01uk Member

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    [Apr 8, 2014]
    my audi had an oil pressure issue early in it's life, got a receipt for a replacement oil pump and strainer. The turbo is fine on mine, never been replaced and no issues whatsoever.

    Fingers crossed you won't have any issues, I'd be asking for them to drop the sump and replace the strainer for piece of mind, it's not a big job.
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  13. PA4ul83
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    PA4ul83 New Member

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    [Apr 8, 2014]
    That's reassuring to know that the turbo has not suffered from earlier issue. Bet the oil pump replacement was a hefty amount! They tell me the sump has been dropped and oil strainer/pickup were totally free from clogging. I know there is a revised part so will look at getting that fitted if I keep it for any length of time. Still awaiting return of car so not getting hopes up too much but seems much more positive than on Saturday when I had visions of new engine being needed!
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  14. madmike01uk
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    madmike01uk Member

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    [Apr 8, 2014]
    It was done under warranty 3 years ago and 22k miles since it's fine (touch wood)
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  15. PA4ul83
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    PA4ul83 New Member

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    [Apr 12, 2014]
    Finally got the car back and all is well :) They replaced oil pressure sensor but light was still coming on so with further investigation it was traced to a wiring loom with damaged cable. Not got any details as yet but was told they used a "loom replacement kit". It seems to be true as the Audi drives spot on with no noises as it did even when the light came on initially - no damage has been caused and took them about an hour to fix in the end once problem was found.

    Once again an electrical problem rather than mechanical. Wanted to close it off explaining the fault was found in the hope that it saves others the worry I went through! The red oil pressure light can be really bad sign but as others have previously said it's often just a sensor or wiring issue with simple fix.
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