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Boost Pressure Regulation/ turbo whine/limp mode

Discussion in 'Engine Discussion and Tuning (archive)' started by unclebob, Aug 26, 2015.

  1. unclebob

    unclebob Active Member

    Joined:
    Jul 22, 2009
    Messages:
    91
    Likes Received:
    0
    Morning all,

    So I have an 2.0 bkd altea,

    I've looked after it fairly well since ive owned it (bought it in 2009, 86k on the clock) in that its had a yearly or 5000 mile oil and filter change (which ever comes first).

    the turbo has sounded like a siren since the day i purchased it...

    Car is (unfortunately) mainly used for short journeys, so over the weekend i took it for a 300 mile journey on motorways...

    When putting my foot down to accelerate fairly rapidly, i'd get the car going into limp mode and turbo shuts down. Turn off the car, back on again and we are back to normal.

    I had this about a year ago (funnily enough almost to the day!)

    Logs attached:
    2015:

    Code:
    Tuesday,25,August,2015,20:59:49:38462
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows XP x86
    VCDS Version: 15.7.0.2
    Data version: 20150820
    www.Ross-Tech.com
    
    
    VIN: VSSZZZ5PZ6R017979   License Plate: BL55CVW
    Mileage: 183570km-114065mi   Repair Order: 
    
    
    Chassis Type: 5P (1K0)
    Scan: 01 03 08 09 15 16 17 19 25 42 44 46 52 56 62 72
    
    VIN: VSSZZZ5PZ6R017979   Mileage: 183570km-114065miles
    
    00-Steering Angle Sensor -- Status: OK 0000
    01-Engine -- Status: Malfunction 0010
    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: Malfunction 0010
    17-Instruments -- Status: OK 0000
    19-CAN Gateway -- Status: OK 0000
    25-Immobilizer -- Status: OK 0000
    42-Door Elect, Driver -- Status: Malfunction 0010
    44-Steering Assist -- Status: OK 0000
    46-Central Conv. -- Status: OK 0000
    52-Door Elect, Pass. -- Status: OK 0000
    56-Radio -- Status: OK 0000
    62-Door, Rear Left -- Status: OK 0000
    72-Door, Rear Right -- Status: OK 0000
     
    -------------------------------------------------------------------------------
    Address 01: Engine        Labels: 03G-906-016-BKD.lbl
       Part No SW: 03G 906 016 HE    HW: 028 101 229 1
       Component: R4 2,0L EDC G000SG  7000  
       Revision: 12345678    Serial number: SEZ7Z0E3077378
       Coding: 0050072
       Shop #: WSC 06402 785 00200
       VCID: 6D241F30A520AEFDE678E4-8038
    
    1 Fault Found:
    16618 - Boost Pressure Regulation 
                P0234 - 000 - Limit Exceeded (Overboost Condition) - Intermittent
                 Freeze Frame:
                        RPM: 2478 /min
                        Torque: 284.0 Nm
                        Speed: 101.0 km/h
                        Load: 60.0 %
                        Voltage: 13.98 V
                        Bin. Bits: 00101000
                        Absolute Pres.: 2172.6 mbar
                        Absolute Pres.: 2590.8 mbar
    
    Readiness: 1 1 0 0 0 
    
    -------------------------------------------------------------------------------
    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: 0006898
       Shop #: WSC 06402 785 00200
       VCID: 407A9684C23293957DBE95-8014
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC        Labels: 1K0-907-044.lbl
       Part No: 5P0 907 044 B
       Component: ClimatronicPQ35 006 0203  
       Shop #: WSC 00000 000 00000
       VCID: 2F98C5386FAC1CED94E45E-807A
    
    1 Fault Found:
    00229 - Refrigerant Pressure 
                002 - Lower Limit Exceeded
    
    -------------------------------------------------------------------------------
    Address 09: Cent. Elect.        Labels: 3C0-937-049-23-H.lbl
       Part No SW: 3C0 937 049 E    HW: 3C0 937 049 E
       Component: Bordnetz-SG     H37 1002  
       Revision: 00H37000    Serial number: 00000003392571
       Coding: 81880F2700041000001E00000100000000007F0B5C
       Shop #: WSC 06402 785 00200
       VCID: 2BA0D1285BB460CDB88C8A-807E
    
       Subsystem 1 - Part No: 5P0 955 119 B  Labels: 1KX-955-119.CLB
       Component: Wischer SE359  012  0402  
       Coding: 00056272
       Shop #: WSC 06402  
    
    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: S8 AIRBAG VW8   015 2100  
       Revision: 03015000    Serial number: 0038ED0GK5HA  
       Coding: 0021304
       Shop #: WSC 06402 785 00200
       VCID: 3788FD5897FCD42DCC1436-8062
    
       Subsystem 1 - Serial number: 6332MSME0A7D3923I
    
       Subsystem 2 - Serial number: 6342MSME0B0C7809J
    
       Subsystem 3 - Serial number: 6351HSME08040558/
    
       Subsystem 4 - Serial number: 6361HSME077D00623
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 16: Steering wheel        Labels: 1K0-953-549-MY8.lbl
       Part No SW: 1K0 953 549 AG    HW: 1K0 953 549 AG
       Component: J0527           034 0070  
       Coding: 0002042
       Shop #: WSC 06402 785 00200
       VCID: 77083D58D77C142D0C9476-8022
    
       Subsystem 1 - Part No: XXXXXXXXXXX 
       Component: E0221           004 0060
    
    1 Fault Found:
    00888 - Wiper Switch for Intermittent Operation (E22) 
                014 - Defective - Intermittent
    
    -------------------------------------------------------------------------------
    Address 17: Instruments        Labels: 1K0-920-xxx-17.lbl
       Part No: 5P0 920 923 A
       Component: KOMBIINSTRUMENT VO3 0616  
       Coding: 0002401
       Shop #: WSC 06403 785 00200
       VCID: 2F98C5386FAC1CED94E45E-807A
    
    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: 28001056308A85
       Coding: 3D3F0340078203
       Shop #: WSC 06402 785 00200
       VCID: 2AAED42C544E79C5439A87-807E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 25: Immobilizer        Labels: 1K0-920-xxx-25.clb
       Part No: 5P0 920 923 A
       Component: IMMO            VO3 0616  
       Shop #: WSC 01069 210 103434
       VCID: 2F98C5386FAC1CED94E45E-807A
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 42: Door Elect, Driver        Labels: 1K0-959-701-MAX2.lbl
       Part No: 1T0 959 701 C
       Component: Tuer-SG         024 2432  
       Coding: 0000656
       Shop #: WSC 06402 785 00200
       VCID: 3788FD5897FCD42DCC1436-8062
    
    1 Fault Found:
    00932 - Electric Window Motor; Drivers Side (V147) 
                005 - No or Incorrect Basic Setting / Adaptation - Intermittent
    
    -------------------------------------------------------------------------------
    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: 3390C9488384380DF03C62-8066
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 46: Central Conv.        Labels: 1K0-959-433-MIN.clb
       Part No: 1K0 959 433 AK
       Component:    KSG              0401  
       Coding: 19C000DC2D0005054C5F863000CC
       Shop #: WSC 01069 210 174572
       VCID: 790C3B60E168025D7A8060-802C
    
       Subsystem 1 - Part No: 1K0 951 605 C
       Component: LIN BACKUP HORN H03 1301
    
       Subsystem 2 - Component:       NGS n.mounted     
    
       Subsystem 3 - Component:      IRUE No Answer     
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 52: Door Elect, Pass.        Labels: 1K0-959-702-MAX2.lbl
       Part No: 1T0 959 702 C
       Component: Tuer-SG         024 2432  
       Coding: 0000656
       Shop #: WSC 06402 785 00200
       VCID: 388AFE649AE2DB55C50E3D-806C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 56: Radio        Labels: 1K0-035-1xx-56.lbl
       Part No: 5P2 035 152 
       Component: Radio BNO           0035  
       Coding: 0040400
       Shop #: WSC 06402 785 00200
       VCID: 67286D1887DC84AD9C3426-8032
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 62: Door, Rear Left        Labels: 1K0-959-703-GEN2.lbl
       Part No: 1K0 959 703 E
       Component: Tuer-SG         021 2426  
       Coding: 0000144
       Shop #: WSC 06402 785 00200
       VCID: 329ECC4C7C9E3105FBCA7F-8066
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 72: Door, Rear Right        Labels: 1K0-959-704-GEN2.lbl
       Part No: 1K0 959 704 E
       Component: Tuer-SG         021 2426  
       Coding: 0000144
       Shop #: WSC 06402 785 00200
       VCID: 3390C9488384380DF03C62-8066
    
    No fault code found.
    
    End-------------------------(Elapsed Time: 01:47)--------------------------
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
    Address 42: DTCs cleared
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
    Address 16: DTCs cleared
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
    Address 01: DTCs cleared

    So googling around and reading forums suggest blocked EGR, split pipes and a whole host of other things.


    As part of the drive, when i came off the motorways, i found that if i was accelerating while going round a roundabout exit (so taking a left turn off the roundabout) i could hear the turbo grinding, as if it had no oil, i'll let my foot off the accelerator, straighten up, then slowly accelerate again, and the noise isn't present... I'm thinking oil starvation due to going round the corner? Oil levels are between the middle and bottom marker, though it is now due a change.

    The other errors on the logs - the window regulator was changed - i guess not reset, wipers seem to work fine so im guessing possibly same issue people have with the cruse control) and AC - needs a top up so not concerned at present..

    What im looking for is some possible things to look at/check for the boost pressure and the possible oil starvation...

    On a side (and possibly related or not) i'm loosing coolant, and as far as i can tell have a c block. Occasionally i get a cloud of white smoke when accelerating hard, so im suspecting egr cooler may be on its way out?
     
    #1 unclebob, Aug 26, 2015
    Last edited: Aug 26, 2015
  2. unclebob

    unclebob Active Member

    Joined:
    Jul 22, 2009
    Messages:
    91
    Likes Received:
    0
    Same log from 2014:

    Code:
    Monday,25,August,2014,11:46:25:38462
    VCDS -- Windows Based VAG/VAS Emulator
    VCDS Version: 12.12.2.0
    Data version: 20140212
    
    
    VIN: VSSZZZ5PZ6R017979   License Plate: BL55CVW
    Mileage: 179400km-111473mi   Repair Order: 
    
    
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
    Chassis Type: 5P (1K0)
    Scan: 01 03 08 09 15 16 17 19 25 42 44 46 52 56 62 72
    
    VIN: VSSZZZ5PZ6R017979   Mileage: 179400km/111473miles
    
    00-Steering Angle Sensor -- Status: OK 0000
    01-Engine -- Status: Malfunction 0010
    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: Malfunction 0010
    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
    62-Door, Rear Left -- Status: OK 0000
    72-Door, Rear Right -- Status: OK 0000
     
    -------------------------------------------------------------------------------
    Address 01: Engine        Labels: 03G-906-016-BKD.lbl
       Part No SW: 03G 906 016 HE    HW: 028 101 229 1
       Component: R4 2,0L EDC G000SG  7000  
       Revision: 12345678    Serial number: SEZ7Z0E3077378
       Coding: 0050072
       Shop #: WSC 06402 785 00200
       VCID: 6DDACB067407C076401-8038
    
    1 Fault Found:
    16618 - Boost Pressure Regulation 
                P0234 - 000 - Limit Exceeded (Overboost Condition) - Intermittent
                 Freeze Frame:
                        RPM: 2961 /min
                        Torque: 342.0 Nm
                        Speed: 94.0 km/h
                        Load: 100.0 %
                        Voltage: 14.29 V
                        Bin. Bits: 00101000
                        Absolute Pres.: 2264.4 mbar
                        Absolute Pres.: 2590.8 mbar
    
    Readiness: 1 1 0 0 0 
    
    -------------------------------------------------------------------------------
    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: 0006898
       Shop #: WSC 06402 785 00200
       VCID: 408442B21315FD1EDB7-8015
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC        Labels: 1K0-907-044.lbl
       Part No: 5P0 907 044 B
       Component: ClimatronicPQ35 006 0203  
       Shop #: WSC 00000 000 00000
       VCID: 2F66110EBE8B726632D-807A
    
    1 Fault Found:
    00229 - Refrigerant Pressure 
                002 - Lower Limit Exceeded
    
    -------------------------------------------------------------------------------
    Address 09: Cent. Elect.        Labels: 3C0-937-049-23-H.lbl
       Part No SW: 3C0 937 049 E    HW: 3C0 937 049 E
       Component: Bordnetz-SG     H37 1002  
       Revision: 00H37000    Serial number: 00000003392571
       Coding: 81880F2700041000001E00000100000000007F0B5C
       Shop #: WSC 06402 785 00200
       VCID: 2B5E051E8A930E461E5-807E
    
       Subsystem 1 - Part No: 5P0 955 119 B  Labels: 1KX-955-119.CLB
       Component: Wischer SE359  012  0402  
       Coding: 00056272
       Shop #: WSC 06402  
    
    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: S8 AIRBAG VW8   015 2100  
       Revision: 03015000    Serial number: 0038ED0GK5HA  
       Coding: 0021304
       Shop #: WSC 06402 785 00200
       VCID: 3776296E46DBBAA66AD-8062
    
       Subsystem 1 - Serial number: 6332MSME0A7D3923I
    
       Subsystem 2 - Serial number: 6342MSME0B0C7809J
    
       Subsystem 3 - Serial number: 6351HSME08040558/
    
       Subsystem 4 - Serial number: 6361HSME077D00623
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 16: Steering wheel        Labels: 1K0-953-549-MY8.lbl
       Part No SW: 1K0 953 549 AG    HW: 1K0 953 549 AG
       Component: J0527           034 0070  
       Coding: 0002042
       Shop #: WSC 06402 785 00200
       VCID: 77F6E96E065B7AA6AAD-8022
    
       Subsystem 1 - Part No: XXXXXXXXXXX 
       Component: E0221           004 0060
    
    1 Fault Found:
    00888 - Wiper Switch for Intermittent Operation (E22) 
                014 - Defective - Intermittent
    
    -------------------------------------------------------------------------------
    Address 17: Instruments        Labels: 1K0-920-xxx-17.lbl
       Part No: 5P0 920 923 A
       Component: KOMBIINSTRUMENT VO3 0616  
       Coding: 0002401
       Shop #: WSC 06403 785 00200
       VCID: 2F66110EBE8B726632D-807A
    
    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: 28001056308A85
       Coding: 3D3F0340078203
       Shop #: WSC 06402 785 00200
       VCID: 2A50001A8569174EE53-807F
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 25: Immobilizer        Labels: 1K0-920-xxx-25.clb
       Part No: 5P0 920 923 A
       Component: IMMO            VO3 0616  
       Shop #: WSC 01069 210 103434
       VCID: 2F66110EBE8B726632D-807A
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 42: Door Elect, Driver        Labels: 1K0-959-701-MAX2.lbl
       Part No: 1T0 959 701 C
       Component: Tuer-SG         024 2432  
       Coding: 0000656
       Shop #: WSC 06402 785 00200
       VCID: 3776296E46DBBAA66AD-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: 336E1D7E52A35686565-8066
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 46: Central Conv.        Labels: 1K0-959-433-MIN.clb
       Part No: 1K0 959 433 AK
       Component:    KSG              0401  
       Coding: 19C000DC2D0005054C5F863000CC
       Shop #: WSC 01069 210 174572
       VCID: 79F2EF56304F6CD6DC9-802C
    
       Subsystem 1 - Part No: 1K0 951 605 C
       Component: LIN BACKUP HORN H03 1301
    
       Subsystem 2 - Component:       NGS n.mounted     
    
       Subsystem 3 - Component:      IRUE No Answer     
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 52: Door Elect, Pass.        Labels: 1K0-959-702-MAX2.lbl
       Part No: 1T0 959 702 C
       Component: Tuer-SG         024 2432  
       Coding: 0000656
       Shop #: WSC 06402 785 00200
       VCID: 38742A524BC5B5DE637-806D
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 56: Radio        Labels: 1K0-035-1xx-56.lbl
       Part No: 5P2 035 152 
       Component: Radio BNO           0035  
       Coding: 0040400
       Shop #: WSC 06402 785 00200
       VCID: E7D6392ED6FB6A26BAD-80B2
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 62: Door, Rear Left        Labels: 1K0-959-703-GEN2.lbl
       Part No: 1K0 959 703 E
       Component: Tuer-SG         021 2426  
       Coding: 0000144
       Shop #: WSC 06402 785 00200
       VCID: 3260187AADB95F8E5D3-8067
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 72: Door, Rear Right        Labels: 1K0-959-704-GEN2.lbl
       Part No: 1K0 959 704 E
       Component: Tuer-SG         021 2426  
       Coding: 0000144
       Shop #: WSC 06402 785 00200
       VCID: 336E1D7E52A35686565-8066
    
    No fault code found.
    
    End   ---------------------------------------------------------------------
    
     
  3. unclebob

    unclebob Active Member

    Joined:
    Jul 22, 2009
    Messages:
    91
    Likes Received:
    0
    PS - i tried to map the boost request/actual but the laptop couldn't handle the graphing software so will need to install vcds on a newer laptop and try again. Do i need to do the recording while driving or can i do it stationary?
     
  4. cheshire cat

    cheshire cat Full Member

    Joined:
    Dec 28, 2002
    Messages:
    1,813
    Likes Received:
    1
    you won't get more than a whiff standing still sounds like the vanes are sticking I would check out the egr as well and fit a temporary guage if you can
     
  5. SeatJay

    SeatJay Active Member

    Joined:
    Jul 25, 2015
    Messages:
    302
    Likes Received:
    0
    Interested in following this, I have the same fault code and had my first issue after buying the car this weekend. Was driving back from the coast and the turbo was fine one minute and then not working the next. I've bought the Diesel Turbo Cleaner from Forte and am hoping it is just a sticky vein that can be cured with it.

    I would be interested to hear anyone elses fixes and things to check!
     
  6. Brody_Antoine

    Brody_Antoine Active Member

    Joined:
    Jul 20, 2014
    Messages:
    52
    Likes Received:
    0
    Hi everyone has anyone repair the overboost issues, ive got the same issue it is intermittent and scared to excelerate had to go back into limp mode. I scan with vcds and im gonna have to do some inspection. But work hours are long and just not enough time and winter is fast approaching. Anyone with ideas would be appreciated. See pics[​IMG][​IMG][​IMG][​IMG]

    Sent from my ALE-L21 using Tapatalk
     

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