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Thread: Boost pressure control valve (n249) fault - leon fr 1pz

  1. #1
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    Boost pressure control valve (n249) fault - leon fr 1pz

    HI ALL,

    KEEP GETTING FOLLOWING FAULT IN ENGINE MANAGEMENT SYSTEM, HAVE REPLACED N249 SOLENOID BUT FAULT RE-APPEARS. HAVE ALSO CHECKED WASTEGATE, PIPES AND HOSES FOR OPERATION/CONDITION - ALL OK.

    MANY THANKS FOR YOUR HELP

    Code:
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
    Chassis Type: 1P (1K0)
    Scan: 01 03 08 09 15 16 17 19 25 42 44 46 52 56 62 72
    
    VIN: VSSZZZ1PZ7R008061   Mileage: 131310km-81592miles
    
    00-Steering Angle Sensor -- Status: OK 0000
    01-Engine -- Status: Malfunction 0010
    03-ABS Brakes -- Status: Malfunction 0010
    08-Auto HVAC -- Status: OK 0000
    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: Malfunction 0010
    62-Door, Rear Left -- Status: OK 0000
    72-Door, Rear Right -- Status: OK 0000
     
    -------------------------------------------------------------------------------
    Address 01: Engine        Labels: 06F-907-115-AXX.lbl
       Part No SW: 1P0 907 115     HW: 8P0 907 115 B
       Component: 2.0l R4/4V TFSI     0040  
       Revision: --H14---    Serial number: SEZ7Z0F3505878
       Coding: 0303000318070160
       Shop #: WSC 64018 476 92338
       VCID: 68D5B6C75BAB5E7EFE-803C
    
    1 Fault Found:
    008801 - Boost Pressure Control Valve (N249) 
                   P2261 - 008 - Mechanical Malfunction
                 Freeze Frame:
                        Fault Status: 01101000
                        Fault Priority: 0
                        Fault Frequency: 1
                        Reset counter: 255
                        Mileage: 131308 km
                        Time Indication: 0
                        Date: 2000.00.00
                        Time: 19:02:45
    
                 Freeze Frame:
                        RPM: 2737 /min
                        Load: 12.2 %
                        Speed: 86.0 km/h
                        Temperature: 90.0C
                        Temperature: 42.0C
                        Absolute Pres.: 990.0 mbar
                        Voltage: 13.970 V
    
    Readiness: 0010 0001
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes        Labels: 1K0-907-379-MK60-F.lbl
       Part No SW: 1K0 907 379 AC    HW: 1K0 907 379 AC
       Component: ESP FRONT MK60      0101  
       Revision: 00H11001    
       Coding: 0004738
       Shop #: WSC 06441 785 00200
       VCID: 73EFD1AB126DADA65B-8026
    
    1 Fault Found:
    01314 - Engine Control Module 
                013 - Check DTC Memory - Intermittent
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC        Labels: 1K0-907-044.lbl
       Part No: 1P0 907 044 
       Component: ClimatronicPQ35 009 0402  
       Shop #: WSC 00000 000 00000
       VCID: 69D3B3C340A16776E1-803C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    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: 00000004162570
       Coding: 818C0F2F00041000001D00000000000000007F075C
       Shop #: WSC 06441 785 00200
       VCID: 2B5F09CB8ADDB566D3-807E
    
       Subsystem 1 - Part No: 1P0 955 119 A  Labels: 1KX-955-119.CLB
       Component: Wischer SE350  012  0403  
       Coding: 00056272
       Shop #: WSC 06441  
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 15: Airbags        Labels: 3C0-909-605.lbl
       Part No SW: 3C0 909 605 H    HW: 3C0 909 605 H
       Component: R5 AIRBAG VW8   027 2521  
       Revision: 09027000    Serial number: 003A1PANTR21  
       Coding: 0021045
       Shop #: WSC 06441 785 00200
       VCID: 2B5F09CB8ADDB566D3-807E
    
       Subsystem 1 - Serial number: 6332MSME0E1A1A7F 
    
       Subsystem 2 - Serial number: 6342MSME0F133413 
    
       Subsystem 3 - Serial number: 6351HTS6QLLM0PB3 
    
       Subsystem 4 - Serial number: 6361HTS6QLLILAH2 
    
       Subsystem 5 - Serial number: 00000000000000000
    
       Subsystem 6 - Serial number: 00000000000000000
    
    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           634 0070  
       Coding: 0002042
       Shop #: WSC 06441 785 00200
       VCID: 77F7E5BB0615C18667-8022
    
       Subsystem 1 - Part No: XXXXXXXXXXX 
       Component: E0221           005 0060
    
    1 Fault Found:
    00883 - Ignition Switch (D) Terminal S 
                012 - Electrical Fault in Circuit - Intermittent
    
    -------------------------------------------------------------------------------
    Address 17: Instruments        Labels: 1K0-920-xxx-17.lbl
       Part No: 1P0 920 925 B
       Component: KOMBIINSTRUMENT VO3 0422  
       Coding: 0002401
       Shop #: WSC 00999 444 64523
       VCID: 2E5900DFB9CFC04EF4-807A
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 19: CAN Gateway        Labels: 1K0-907-530-V2.clb
       Part No SW: 1K0 907 530 H    HW: 1K0 907 951 
       Component: J533__Gateway   H12 0150  
       Revision:   H12       Serial number: 31001065158587
       Coding: 3D3F034007000203
       Shop #: WSC 06441 785 00200
       VCID: 2C5D0AD78FD3B25EDA-8078
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 25: Immobilizer        Labels: 1K0-920-xxx-25.clb
       Part No: 1P0 920 925 B
       Component: IMMO            VO3 0422  
       Shop #: WSC 00000 000 00000
       VCID: 2E5900DFB9CFC04EF4-807A
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 42: Door Elect, Driver        Labels: 1K0-959-701-MAX3.lbl
       Part No SW: 1T0 959 701 G    HW: 1K0 959 793 M
       Component: J386  TUER-SG FT    1124  
       Revision: 11006001    Serial number: 00000504768523
       Coding: 0000688
       Shop #: WSC 06441 785 00200
       VCID: 3B7F398B7ABD25E643-806E
    
    1 Fault Found:
    00914 - Window Regulator Switch; Rear Left; Driver (E53) 
                008 - Implausible Signal - Intermittent
                 Freeze Frame:
                        Fault Status: 00101000
                        Fault Priority: 4
                        Fault Frequency: 254
                        Reset counter: 132
                        Mileage: 131249 km
                        Time Indication: 0
    
    
    -------------------------------------------------------------------------------
    Address 44: Steering Assist        Labels: 1Kx-909-14x-44.clb
       Part No: 1K2 909 144 L
       Component: EPS_ZFLS Kl.142 H07 1806  
       Shop #: WSC 06441 785 00200
       VCID: 356B2FB35C99F396B5-8060
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 46: Central Conv.        Labels: 1K0-959-433-MAX.clb
       Part No SW: 1K0 959 433 BT    HW: 1K0 959 433 BT
       Component:    KSG PQ35 G2  020 0202  
       Revision: 00020000    Serial number: 00000000000000
       Coding: 198000005283CC7F0006050560085F86107C80
       Shop #: WSC 06441 785 00200
       VCID: 030F816B42CD9D264B-8056
    
       Subsystem 5 - Part No: 1P0 951 171 
       Component: Innenraumueberw.010 4971  
       Coding: 00000000
       Shop #: WSC 06441  
    
       Subsystem 6 - Part No: 1K0 951 605 C
       Component: LIN BACKUP HORN H03 1301
    
       Subsystem 7 - Component:       NGS n.mounted     
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 52: Door Elect, Pass.        Labels: 1K0-959-702-MAX3.lbl
       Part No SW: 1T0 959 702 G    HW: 1K0 959 792 M
       Component: J387  TUER-SG BT    1124  
       Revision: 11006001    Serial number: 00000509968527
       Coding: 0000688
       Shop #: WSC 06441 785 00200
       VCID: 3C7D3A977FB322DE4A-8068
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 56: Radio        Labels: 1K0-035-1xx-56.lbl
       Part No: 1P2 035 186 A
       Component: Radio BVX           0006  
       Coding: 0042424
       Shop #: WSC 04941 785 00200
       VCID: 2B5F09CB8ADDB566D3-807E
    
    2 Faults Found:
    00871 - Bass Speaker Front Right (R23) 
                011 - Open Circuit - Intermittent
    01303 - Telephone Transceiver (R36) 
                004 - No Signal/Communication
    
    -------------------------------------------------------------------------------
    Address 62: Door, Rear Left        Labels: 1K0-959-703-GEN3.lbl
       Part No SW: 1K0 959 703 N    HW: 1K0 959 795 H
       Component: J388   TUER-SG HL   1103  
       Revision: 11004001    Serial number: 00000000098919
       Coding: 0000144
       Shop #: WSC 06441 785 00200
       VCID: 3B7F398B7ABD25E643-806E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 72: Door, Rear Right        Labels: 1K0-959-704-GEN3.lbl
       Part No SW: 1K0 959 704 N    HW: 1K0 959 794 H
       Component: J389   TUER-SG HR   1103  
       Revision: 11004001    Serial number: 00000000104092
       Coding: 0000144
       Shop #: WSC 06441 785 00200
       VCID: 3C7D3A977FB322DE4A-8068
    
    No fault code found.
    
    End-------------------------(Elapsed Time: 01:56)--------------------------
    Last edited by Uwe; 08-11-2015 at 01:32 PM. Reason: CODE tags

  2. #2
    Ross-Tech Employee DrPeter's Avatar
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    Hello,

    HAVE YOU had a chance to look at this Ross-Tech wiki page?

    18693/P2261/008801 - Boost Pressure Control Valve (N249): Mechanical Malfunction


    Wiring/Connectors - ? - maybe?


    Hope that helps,

    drpeter

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  4. #3
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    Trying to understand this better:

    Are these all the same?

    Parts store: Turbocharger Cut Off Bypass Valve
    Repair manual: Turbocharger Recirculating Valve N249
    Vag-Com: Boost Pressure Control Valve N249
    Forums: DV (Turbo diverter valve)


    Any more names?


    (neme used by parts store ?
    It's unbelievable to

  5. #4
    NostraJackAss Jack@European_Parts's Avatar
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    Have you checked the actual diverter " by pass valve "?
    European Parts Emporium/Performance / Immobilizer Solutions EPE
    Certified Master Trained NY/BAR/BAD 7076062/ASE/SAE/NASTF Legal Factory Authorized/Licensed GeKo/FaZit # 403738
    Specializing in Custom Services IE: "welding-fabrication" / EPA-SMOG Update or Pass-Thru-Programming / Data Transfer / Immobilizers & OEM Quality Parts
    Above Magic! No Written record, AUTO-SCAN or Appointment = NO HELP!
    www.FixMyEuro.com <<<<<CLICK HERE! or vwemporium@aol.com ( JPPSG & Unverified members need not PM me & Please don't email or call facility for free tech support...use the forum )
    Getting you CONTROL again of your property - TAKE IT! In Conjunction with.........

  6. #5
    Benevolent Dictator Uwe's Avatar
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    Quote Originally Posted by elkm36a View Post
    Trying to understand this better:

    Are these all the same?

    Parts store: Turbocharger Cut Off Bypass Valve
    Repair manual: Turbocharger Recirculating Valve N249
    Vag-Com: Boost Pressure Control Valve N249
    Forums: DV (Turbo diverter valve)
    I'm reasonably confident they're all referring to the same thing.

    Quote Originally Posted by elkm36a View Post
    Any more names?
    Ricers like to call it the "blow off valve".

    -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.

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  8. #6
    NostraJackAss Jack@European_Parts's Avatar
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    Also "Secondary boost control valve" or "emergency boost control valve".............

    "Turbo boost pulse protection valve"
    European Parts Emporium/Performance / Immobilizer Solutions EPE
    Certified Master Trained NY/BAR/BAD 7076062/ASE/SAE/NASTF Legal Factory Authorized/Licensed GeKo/FaZit # 403738
    Specializing in Custom Services IE: "welding-fabrication" / EPA-SMOG Update or Pass-Thru-Programming / Data Transfer / Immobilizers & OEM Quality Parts
    Above Magic! No Written record, AUTO-SCAN or Appointment = NO HELP!
    www.FixMyEuro.com <<<<<CLICK HERE! or vwemporium@aol.com ( JPPSG & Unverified members need not PM me & Please don't email or call facility for free tech support...use the forum )
    Getting you CONTROL again of your property - TAKE IT! In Conjunction with.........

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  10. #7
    Ross-Tech Employee DrPeter's Avatar
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    Are these all the same?

    Parts store: Turbocharger Cut Off Bypass Valve
    Repair manual: Turbocharger Recirculating Valve N249
    Vag-Com: Boost Pressure Control Valve N249
    Forums: DV (Turbo diverter valve)
    Some others...
    - Pop-off valve
    - "Blow-off valve" - (Like Uwe said) (I hear that a lot, I call it the diverter valve).


    - Just to clarify:
    The diverter valve is the actual part that is doing the diverting of boost pressure back into the intake stream when you let off the throttle,
    this way you do not 'stall the turbo' with backed up boost pressure after the throttle plate closes, because the turbo is still spinning and
    you want this so you do not have to re-spool the turbo each time the throttle closes, like when you are shifting gears.. etc.

    The N249, is an electrical solenoid that the ECM controls to regulate the vacuum to the above diverter valve.

    The ECM can watch the boost pressure with the G31 pressure sensor and when the throttle plate closes,
    the boost pressure should not increase, because the diverter valve is commanded open. If the pressure does increase,
    the ECM suspects the diverter valve has not opened and sets the fault.

    Hope this helps,

    drpeter

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