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

   #1  

adfow_uk

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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:
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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: 90.0°C
                    Temperature: 42.0°C
                    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)--------------------------
 
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   #3  

elkm36a

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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  

Uwe

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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)
I'm reasonably confident they're all referring to the same thing.

Any more names?
Ricers like to call it the "blow off valve". :rolleyes:

-Uwe-
 
   #6  

Jack@European_Parts

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Also "Secondary boost control valve" or "emergency boost control valve".............

"Turbo boost pulse protection valve"
 
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Reactions: Uwe
   #7  

DrPeter

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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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