2.0 TFSI CDLA Low Oil Pressure Warning

   #1  

jernjackson

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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  

Keithuk

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C?ID=122432
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
 
   #3  

jernjackson

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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:
   #4  

jernjackson

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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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   #5  

Uwe

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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-
 
   #6  

jernjackson

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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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