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Thread: 2.0 TFSI CDLA Low Oil Pressure Warning

  1. #1
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    2.0 TFSI CDLA Low Oil Pressure Warning

    Hi

    I'm having an issue with a 2.0T FSI in where the I will get a "STOP! Low oil pressure, Engine off!" warning on the dash and engine will turn off.
    Car is a Mk5 Golf GTI with a recent engine swap.
    The warning only happens when the engine is raced, under normal slow driving the is never comes up. Only seems to be when the engine oil is 90c> aswell.
    Oil is at max, 70mm on vcds and only falls to 67mm with engine on. Logs show this stays consistent though rev range and when oil warning light appears.
    VCDS scan shows no faults.
    I have replaced the oil pickup, inspected the pump as much as I can with the sump off and replaced the pressure switch and still the problem persists.
    I'm not looking at the pump as the problem atm as the engine has 22k on it and the condition of the pump seems to confirm this, also the pickup I removed was not blocked and only changed as I had a new one spare.

    Are there any pressure relief valves in the system that would cause low oil pressure only at higher revs, or anything else that could cause these symptoms?

    Cheers.

  2. #2
    Verified VCDS User Keithuk's Avatar
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    Welcome to the forum.

    You always post a full AutoScan of the vehicle in question whether there are any fault codes or not as there is more info in there than fault codes. [CODE] Full AutoScan [/CODE]

    How to post an Auto-Scan
    New User Keith

    2010 Golf GTD (170) CBBB, 5 Door, Shadow Blue (P6/D5Q), Flat Tyre Indicator, Basic Protection Pack + VCDS.

  3. #3
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    Ok will do cheers.

    Code:
    Saturday,26,September,2015,14:12:42:11006
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x86
    VCDS Version: 15.7.1.0
    Data version: 20150904
    www.Ross-Tech.com
    
    Mileage: 114200km-70960mi   Repair Order: 
    
    
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
    Chassis Type: 1K (1K0)
    Scan: 01 03 08 09 15 16 17 19 25 42 44 46 52 56
    
    VIN: WVWZZZ1KZ6W001198   Mileage: 114200km-70960miles
    
    00-Steering Angle Sensor -- Status: OK 0000
    01-Engine -- Status: OK 0000
    03-ABS Brakes -- Status: OK 0000
    08-Auto HVAC -- Status: Malfunction 0010
    09-Cent. Elect. -- Status: OK 0000
    15-Airbags -- Status: OK 0000
    16-Steering wheel -- Status: OK 0000
    17-Instruments -- Status: OK 0000
    19-CAN Gateway -- Status: OK 0000
    25-Immobilizer -- Status: OK 0000
    42-Door Elect, Driver -- Status: OK 0000
    44-Steering Assist -- Status: OK 0000
    46-Central Conv. -- Status: OK 0000
    52-Door Elect, Pass. -- Status: OK 0000
    56-Radio -- Status: OK 0000
     
    -------------------------------------------------------------------------------
    Address 01: Engine        Labels: 06F-907-115-AXX.lbl
       Part No SW: 1K0 907 115     HW: 1K0 907 115 
       Component: 2.0l R4/4V TFSI  00 0070  
       Revision: --H01---    Serial number: VWZ7Z0E2172218
       Coding: 0403000318070060
       Shop #: WSC 01279 785 00200
       VCID: 63C1C2AEA27F462620-8036
    
    No fault code found.
    Readiness: 0000 0000
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes        Labels: 1K0-907-379-MK60-F.lbl
       Part No SW: 1K0 907 379 Q    HW: 1K0 907 379 Q
       Component: ESP FRONT MK60      0102  
       Revision: 00T12001    
       Coding: 0004738
       Shop #: WSC 01279 785 00200
       VCID: 408B2D2213A93D3E1D-8014
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC        Labels: 1K0-907-044.lbl
       Part No: 1K0 907 044 AT
       Component: ClimatronicPQ35 066 0606  
       Shop #: WSC 00000 000 00000
       VCID: 79FD80C630F3ACF61A-802C
    
    1 Fault Found:
    00229 - Refrigerant Pressure 
                002 - Lower Limit Exceeded
    
    -------------------------------------------------------------------------------
    Address 09: Cent. Elect.        Labels: 3C0-937-049-30-H.lbl
       Part No SW: 3C8 937 049 AB    HW: 3C8 937 049 AB
       Component: Bordnetz-SG     H57 3204  
       Revision: 00H57000    Serial number: 00000003667809
       Coding: E58D0F2700041500471400001400000000087F075C000100000000000000
       Shop #: WSC 00083 210 83371
       VCID: 71EDB8E66883E4B6A2-8024
    
       Subsystem 1 - Part No: 1K2 955 119 B  Labels: 1KX-955-119.CLB
       Component: Wischer VW350  012  0401  
       Coding: 00065493
       Shop #: WSC 00083  
    
       Subsystem 2 - Part No: 1K0 955 559 R  Labels: 1K0-955-559-AF.CLB
       Component: RegenLichtSens 010  1010  
       Coding: 00207646
       Shop #: WSC 00083  
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 15: Airbags        Labels: 1K0-909-605.lbl
       Part No SW: 1K0 909 605 N    HW: 1K0 909 605 N
       Component: 08 AIRBAG VW8   015 2100  
       Revision: 03015000    Serial number: 0038ED0DC6M5  
       Coding: 0012344
       Shop #: WSC 01269 785 00200
       VCID: 377946FE46677A86AC-8062
    
       Subsystem 1 - Serial number: 6332MSME0A1B415BE
    
       Subsystem 2 - Serial number: 6342MSME0A144310 
    
       Subsystem 3 - Serial number: 6351HSME067F063DH
    
       Subsystem 4 - Serial number: 6361HSME072F00484
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 16: Steering wheel        Labels: 1K0-953-549-MY8.lbl
       Part No SW: 1K0 953 549 F    HW: 1K0 953 549 F
       Component: Lenksäulenmodul 521 0050  
       Coding: 0000012
       Shop #: WSC 01279 785 00200
       VCID: 35654CF65C6B8896BE-8060
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments        Labels: 1K0-920-xxx-17.lbl
       Part No: 1K6 920 962 
       Component: KOMBIINSTRUMENT VDD 1012  
       Coding: 0003403
       Shop #: WSC 00083 210 11904
       VCID: 6ED7A39A79BDFB4EBF-803A
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments        Labels: 1K0-920-xxx-17.lbl
       Part No: 1K6 920 962 
       Component: KOMBIINSTRUMENT VDD 1012  
       Coding: 0003403
       Shop #: WSC 00083 210 11904
       VCID: 6ED7A39A79BDFB4EBF-803A
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 19: CAN Gateway        Labels: 1K0-907-530-V1.clb
       Part No SW: 1K0 907 530 F    HW: 1K0 907 951 
       Component: Gateway         H10 0120  
       Revision:   H10       Serial number: 28001055130484
       Coding: 3D0F0340070001
       Shop #: WSC 01279 785 00200
       VCID: 2A5F6F8A85D5D76E23-807E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 25: Immobilizer        Labels: 1K0-920-xxx-25.clb
       Part No: 1K6 920 962 
       Component: IMMO            VDD 1012  
       Shop #: WSC 00000 000 00000
       VCID: 6ED7A39A79BDFB4EBF-803A
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 42: Door Elect, Driver        Labels: 1K0-959-701-MIN2.lbl
       Part No: 1K0 959 701 K
       Component: Tuer-SG         024 2310  
       Coding: 0000564
       Shop #: WSC 01279 785 00200
       VCID: 36674BFA416D838EB7-8062
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 44: Steering Assist        Labels: 1Kx-909-14x-44.clb
       Part No: 1K2 909 144 J
       Component: EPS_ZFLS Kl.5   D04 1606  
       Shop #: WSC 00000 000 00000
       VCID: 336172EE521F96A690-8066
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 46: Central Conv.        Labels: 1K0-959-433-MIN.clb
       Part No: 1K0 959 433 AJ
       Component:    KSG              0401  
       Coding: 01C802087F2D8405485AC69010CC
       Shop #: WSC 01392 785 00200
       VCID: 78FB85C20BF9B5FE65-802C
    
       Subsystem 1 - Part No: 1K0 951 605 B
       Component: LIN BACKUP HORN H07 7001
    
       Subsystem 2 - Part No: 1K0 907 719 B
       Component: Neigungssensor  004 0003
    
       Subsystem 3 - Part No: 1K0 951 177 A
       Component: Innenraumueberw.005 0202
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 52: Door Elect, Pass.        Labels: 1K0-959-702-MIN2.lbl
       Part No: 1K0 959 702 K
       Component: Tuer-SG         024 2310  
       Coding: 0000564
       Shop #: WSC 01279 785 00200
       VCID: 377946FE46677A86AC-8062
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 56: Radio        Labels: 1K0-035-1xx-56.lbl
       Part No: 1K0 035 186 P
       Component: Radio BVX       016 0023  
       Coding: 0040402
       Shop #: WSC 01279 785 00200
       VCID: 336172EE521F96A690-8066
    
    No fault code found.
    
    End-------------------------(Elapsed Time: 01:46)--------------------------
    Last edited by jernjackson; 09-26-2015 at 08:21 AM.

  4. #4
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    I managed to get a dealer oil pressure tester and checked the oil pressure on the car via the pressure switch hole on the side of the oil filter housing.
    Here are my results, they look spot on to me but if someone could confirm this that would be great.

    Cold start - 56psi
    Cold idle (oil temp 30c) - 42psi
    Hot idle (oil temp 78c) - 20psi
    1500rmp - 48psi
    2000rmp - 52psi
    3000rmp - 58psi
    Pressure does not pass 60psi depending on revs after that.

    I can't drive the car and check the gauge at the same time as the hose on it is about half a meter long. Would the pressures change under the load of driving?

    Could this simple be a wiring issue? I know because the oil filter housing is plastic, the switch uses a ground wire to the block, could a bad connecting of this ground cause the random oil pressure warning?
    Cheers.

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  6. #5
    Benevolent Dictator Uwe's Avatar
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    Quote Originally Posted by jernjackson View Post
    Could this simple be a wiring issue?
    Absolutely it could. Is that switch normally open or normally closed? What happens if you unplug the harness from the switch?

    -Uwe-
    The engineering problems are likely insurmountable. It would be like proposing to land a rocket booster section on a barge floating in the middle of the ocean.

  7. #6
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    The switch is usually closed, when the plug is unconnected the warning will show on the dash. (and in group 001, block 3 VCDS instruments)So when It sees <1.2bar it will open the circuit.
    I have ruled out wiring as the issue as I made up a new ground wire and attached it to the starter earth point. Also tried another sensor from a 1.8t.
    I though I had fixed it with the wiring, I drove a good 5 mile without the warning, then as soon I do any sustained acceleration it flashes up. Stop the car, start it again and its fine.

    Next step will be to get a longer oil line for the tester, then I can check the pressure when the warning shows while driving. At this point tho it must be genuine low oil pressure with the warning, which is very worrying and puzzling.

    Why would the pressure drop off (which must be altogether <1.2bar) at high rpms?

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