N276 fuel pressure regulator valve problem

   #1  
A

ahidley

Verified VCDS User
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Joined
Apr 23, 2023
Messages
76
Reaction score
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Location
Pennsylvania, USA
VCDS Serial number
C?ID=549110
Hello, Im having a terriable time with a MIL on my 2007 audi a4 with a 3.2 engine.
The MIL is P2294. Sounds simple right? So I use chatgpt AI for assistance and it tells me that the fuel pressure regulator vaalve commonly fails because of broken wires near the plug. OK makes sense. Then I submitted the VCDS log and chatgpt sees a fault in the immoblizer caused by the headlight module. It says that a failing headlight module can send bad info via the canbus and cause the imoblizer to detect that and put the car into limp mode, which it does. Chatgpt said to disconnect the headlight module and delete the codes and test drive the car. I did and it ran AWSOME. I recorded that log file and chatgpt said it also needs high pressure info. The problem is the terminology that chatgpt uses vs vcds for the info blocks as well as vcds only allowing 12 fields of info per session file. So I thought I had the correct info numbers for the advanced measuring blocks and I went for another run to log it again. This time the car is shutting off intermittently for a half second and then the check engine light comes back on. On the last run the car was up to temp. Perhaps the n276 is failing when hot? on this car the n276 is NOT located on the high pressure fuel pump which is located at the FRONT DRIVERS side , USA model. AS I google search for a part number for the n276 fuel pressure regulator valve I cant seem to find one that has 2 wires . They all come back without electrical connections. The n276 is NOT mounted to the fuel pump, aka no wires from the hpfp.

Code: 
Wednesday,17,June,2026,21:09:18:15949
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 11 x64
VCDS Version: 26.3.0.0 (x64)  HEX-V2 CB: 0.4701.4
Data version: 20260320 DS375.1
www.Ross-Tech.com


VIN: WAUDH78EX7A103186   License Plate:
Mileage: 308020km-191394mi   Repair Order:



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Chassis Type: 8E (8E - Audi A4/S4/RS4 B6/B7 (2001 > 2008))
Scan: 01 02 03 08 09 0F 11 15 16 17 18 25 36 37 45 46 55 56 57 65
          67 69 75 76 77
 
VIN: WAUDH78EX7A103186   Mileage: 308020km-191394miles
-------------------------------------------------------------------------------
Address 01: Engine (AUK)       Labels:. 06E-910-559-BKH.clb
   Part No SW: 8E1 910 559 F    HW: 8E0 907 559 J
   Component: 3.2l V6 FSI         0080 
   Revision: --H19---    Serial number:               
   Coding: 01040109180F0120
   Shop #: WSC 40636 444 999999
   VCID: 313F07F99D2ABE5270D-8064
   VINID: 9D1954607215A074410030481879395D91

1 Fault Found:
008852 - Fuel Pressure Regulator Valve (N276)
               P2294 - 009 - Open Circuit - MIL ON
             Freeze Frame:
                    Fault Status: 10100100
                    Fault Priority: 4
                    Fault Frequency: 2
                    Reset counter: 40
                    Mileage: 308029 km
                    Time Indication: 0

             Freeze Frame:
                    RPM: 1120 /min
                    Mass Air / Rev.: 103.6 mg/str
                    Temperature: 90.0 C
                    Pressure: 4.9 bar
                    Voltage: 12.34 V
                    Temperature: 48.0 C

Readiness: 0110 0101

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 8E0-910-517.clb
   Part No SW: 8E0 910 517 J    HW: 8E0 614 517 BH
   Component: ESP8 quattro    H06 0140 
   Revision: 00000000    Serial number: 00000000000000
   Coding: 0004379
   Shop #: WSC 06335 000 00000
   VCID: 2E051C858C14A1AA6DF-807A

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 8E0-820-043.lbl
   Part No: 8E0 820 043 BM
   Component:   A4 Klimaautomat   2833 
   Coding: 00000
   Shop #: WSC 00000 
   VCID: 6D87DB8944821AB2145-50D0

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect.        Labels: 8E0-907-279-8EC.lbl
   Part No: 8E0 907 279 N
   Component: int. Lastmodul  USA 0907 
   Coding: 01023
   Shop #: WSC 65536 
   VCID: 3D272BC954624A32E45-4AA4

No fault code found.

-------------------------------------------------------------------------------
Address 0F: Digital Radio        Labels: 8E0-035-593-SIR.lbl
   Part No SW: 8E0 035 593 F    HW: 8E0 035 593 F
   Component: SDAR SIRIUS         0120 
   Serial number: AUZ4Z7F1040029
   Shop #: WSC 00000 000 00000
   VCID: 2C01168DBA28D3BA43B-5160

1 Fault Found:
02635 - Tuner Not Enabled/Activated
            000 - -

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 8E0-959-655-94.lbl
   Part No SW: 8E0 959 655 H    HW: 8E0 959 655 H
   Component:    Airbag 9.41  H12 3840 
   Revision: 91H12384    Serial number: 0036N0G0CZZ1 
   Coding: 0032607
   Shop #: WSC 06325 000 00000
   VCID: 3C2126CD4A68433AD3B-8068

   Subsystem 1 - Part No: 8E0 910 339 B
   Component: BF-Gewichtsens. 002 0070

   Subsystem 2 - Serial number: 3B9PA         

   Subsystem 3 - Serial number: 0001.01.000000200000000000  63

   Subsystem 4 - Serial number: 000000  6332DRB403D98AAC5  63

   Subsystem 5 - Serial number: 98AAC5  6342DRB403DBD2A6%  63

   Subsystem 6 - Serial number: BD2A6%  6352ARB401B2E46FZ  63

   Subsystem 7 - Serial number: 2E46FZ  6362ARB401B15180A  63

   Subsystem 8 - Serial number: 15180A  63729RB401AD4AB4-  63

   Subsystem 9 - Serial number: D4AB4-  63829RB401AD4AB7/

   Subsystem 10 - Serial number: D4AB7/

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel        Labels: 8E0-953-549.lbl
   Part No: 8E0 953 549 Q
   Component: Lenks ulenmodul     0701 
   Coding: 04041
   Shop #: WSC 06325 
   VCID: 41DF5739289A2ED280D-4AA4

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 8E0-920-9xx-8EC.clb
   Part No SW: 8E0 920 951 G    HW: 8E0 920 951 G
   Component: KOMBI+WFS 4     H14 0120 
   Revision: 0120        Serial number: 00000000000000
   Coding: 0023261
   Shop #: WSC 06436 444 84396
   VCID: 2E051C858C04A1AA6DF-5118

1 Fault Found:
01771 - Control Module for Headlight Range (J431)
            004 - No Signal/Communication

-------------------------------------------------------------------------------
Address 25: Immobilizer        Labels: 8E0-920-9xx-8EC.clb
   Part No SW: 8E0 920 951 G    HW: 8E0 920 951 G
   Component: KOMBI+WFS 4     H14 0120 
   Revision: 0120        Serial number: 00000000000000
   Coding: 0023261
   Shop #: WSC 06436 444 84396
   VCID: 2E051C858C04A1AA6DF-5118

1 Fault Found:
01771 - Control Module for Headlight Range (J431)
            004 - No Signal/Communication

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr        Labels: 8E0-959-760.lbl
   Part No: 8E0 959 760
   Component: Sitzmemory R2 F     0305 
   Coding: 00002
   Shop #: WSC 00000 
   VCID: 71BFC7F9588AFE5230D-4B3C

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels:. 8E0-959-433-MAX.clb
   Part No: 8E0 959 433 CG
   Component: Komfortger t T7B    4035 
   Coding: 11788
   Shop #: WSC 06335 
   VCID: 78A9FADD3BC0AF1AF73-4AA4

   Subsystem 1 - Part No: 8E1959801G
   Component: T rsteuer.FS BRM 0706 

   Subsystem 2 - Part No: 8E1959802G
   Component: T rsteuer.BF BRM 0706 

   Subsystem 3 - Part No: 8E0959801E
   Component: T rsteuer.HL BRM 0606 

   Subsystem 4 - Part No: 8E0959802E
   Component: T rsteuer.HR BRM 0606 

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio        Labels: 8J0-035-1xx-56.clb
   Part No SW: 8E0 035 195 AC    HW: 8E0 035 195 AC
   Component: R Symphony2+    H03 0070 
   Revision: 00H03000    Serial number: AUZ1Z4F2837782
   Coding: 0650102
   Shop #: WSC 06325 000 00000
   VCID: 6889AA9D6E503F9A673-5160

No fault code found.

-------------------------------------------------------------------------------
Address 77: Telephone        Labels: 8P0-862-335.lbl
   Part No SW: 8P0 862 335 J    HW: 8P0 862 335 J
   Component: FSE_255x BT     H26 0290 
   Revision: 00000000    Serial number: 00000005010357
   Coding: 0001677
   Shop #: WSC 06325 000 00000
   VCID: 3D272BC951624A32E45-50D0

No fault code found.

End----------(Elapsed Time: 05:10, VBatt start/end: 12.5V/12.2V)-----------
------------------------------4 Faults Found-------------------------------

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Address 01: DTCs cleared
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Address 03: DTCs cleared
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Address 08: DTCs cleared
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Address 09: DTCs cleared
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Address 0F: DTCs cleared
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Address 15: DTCs cleared
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Address 16: DTCs cleared
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Address 17: DTCs cleared
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Address 25: DTCs cleared
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Address 36: DTCs cleared
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Address 46: DTCs cleared
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Address 56: DTCs cleared
 
   #2  
A

ahidley

Verified VCDS User
Verified
Joined
Apr 23, 2023
Messages
76
Reaction score
9
Location
Pennsylvania, USA
VCDS Serial number
C?ID=549110
need directions to attach a *.csv file
 
   #3  
Uwe

Uwe

Benevolent Dictator
Administrator
Joined
Jan 29, 2014
Messages
62,500
Reaction score
42,872
Location
USA
VCDS Serial number
HC100001
ahidley said:
need directions to attach a *.csv file
Click to expand...
Don't attach. Open with Notepad. Copy & paste the contents here, just like your Auto-Scan.

-Uwe-
 
   #4  
A

ahidley

Verified VCDS User
Verified
Joined
Apr 23, 2023
Messages
76
Reaction score
9
Location
Pennsylvania, USA
VCDS Serial number
C?ID=549110
Code: 
Wednesday,17,June,2026,20:56:50:15949-VCID:313F07F99D2ABE5270D-8064,VCDS Version: Release 26.3.0 (x64),Data version: 20260320 DS375.1
8E1 910 559 F,ADVMB,3.2l V6 FSI         0080,
,,G001,F0,G103,F1,G106,F0,G106,F3,G140,F1,G140,F2,G141,F0,G141,F1,G141,F2,G141,F3,G000,F0,G000,F0,

Marker,TIME,Group 1 - Field 0,TIME,Group 103 - Field 1,TIME,Group 106 - Field 0,TIME,Group 106 - Field 3,TIME,Group 140 - Field 1,TIME,Group 140 - Field 2,TIME,Group 141 - Field 0,TIME,Group 141 - Field 1,TIME,Group 141 - Field 2,TIME,Group 141 - Field 3,,,,,
,STAMP,Engine Speed - (G28),STAMP,Fuel Pressure - Regulator,STAMP,Low side - Fuel Pressure,STAMP,Fuel Pump - Shut-Off Time,STAMP,Fuel Rail - Pressure (spec.),STAMP,Fuel Rail - Pressure (actual),STAMP,High Fuel Rail - Pressure Adaptation,STAMP,High Fuel Rail - Pressure Regulator,STAMP,High Fuel Rail - Press. Reg. (I-Port.),STAMP,Fuel Pressure - Control Status,,,,,
,, /min,, %,, bar,, s,, bar,, bar,, bar,,,,,,,,,,,
 
   #5  
T

TTT

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Verified
Joined
Jun 10, 2023
Messages
2,383
Reaction score
1,172
Location
Netherlands
VCDS Serial number
C?ID=547002
ahidley said:
Hello, Im having a terriable time with a MIL on my 2007 audi a4 with a 3.2 engine.
The MIL is P2294. Sounds simple right? So I use chatgpt AI for assistance and it tells me that the fuel pressure regulator vaalve commonly fails because of broken wires near the plug. OK makes sense. Then I submitted the VCDS log and chatgpt sees a fault in the immoblizer caused by the headlight module. It says that a failing headlight module can send bad info via the canbus and cause the imoblizer to detect that and put the car into limp mode, which it does. Chatgpt said to disconnect the headlight module and delete the codes and test drive the car. I did and it ran AWSOME. I recorded that log file and chatgpt said it also needs high pressure info. The problem is the terminology that chatgpt uses vs vcds for the info blocks as well as vcds only allowing 12 fields of info per session file. So I thought I had the correct info numbers for the advanced measuring blocks and I went for another run to log it again. This time the car is shutting off intermittently for a half second and then the check engine light comes back on. On the last run the car was up to temp. Perhaps the n276 is failing when hot? on this car the n276 is NOT located on the high pressure fuel pump which is located at the FRONT DRIVERS side , USA model. AS I google search for a part number for the n276 fuel pressure regulator valve I cant seem to find one that has 2 wires . They all come back without electrical connections. The n276 is NOT mounted to the fuel pump, aka no wires from the hpfp.

Code: 
Wednesday,17,June,2026,21:09:18:15949
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 11 x64
VCDS Version: 26.3.0.0 (x64)  HEX-V2 CB: 0.4701.4
Data version: 20260320 DS375.1
www.Ross-Tech.com


VIN: WAUDH78EX7A103186   License Plate:
Mileage: 308020km-191394mi   Repair Order:



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Chassis Type: 8E (8E - Audi A4/S4/RS4 B6/B7 (2001 > 2008))
Scan: 01 02 03 08 09 0F 11 15 16 17 18 25 36 37 45 46 55 56 57 65
          67 69 75 76 77
 
VIN: WAUDH78EX7A103186   Mileage: 308020km-191394miles
-------------------------------------------------------------------------------
Address 01: Engine (AUK)       Labels:. 06E-910-559-BKH.clb
   Part No SW: 8E1 910 559 F    HW: 8E0 907 559 J
   Component: 3.2l V6 FSI         0080
   Revision: --H19---    Serial number:              
   Coding: 01040109180F0120
   Shop #: WSC 40636 444 999999
   VCID: 313F07F99D2ABE5270D-8064
   VINID: 9D1954607215A074410030481879395D91

1 Fault Found:
008852 - Fuel Pressure Regulator Valve (N276)
               P2294 - 009 - Open Circuit - MIL ON
             Freeze Frame:
                    Fault Status: 10100100
                    Fault Priority: 4
                    Fault Frequency: 2
                    Reset counter: 40
                    Mileage: 308029 km
                    Time Indication: 0

             Freeze Frame:
                    RPM: 1120 /min
                    Mass Air / Rev.: 103.6 mg/str
                    Temperature: 90.0 C
                    Pressure: 4.9 bar
                    Voltage: 12.34 V
                    Temperature: 48.0 C

Readiness: 0110 0101

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 8E0-910-517.clb
   Part No SW: 8E0 910 517 J    HW: 8E0 614 517 BH
   Component: ESP8 quattro    H06 0140
   Revision: 00000000    Serial number: 00000000000000
   Coding: 0004379
   Shop #: WSC 06335 000 00000
   VCID: 2E051C858C14A1AA6DF-807A

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 8E0-820-043.lbl
   Part No: 8E0 820 043 BM
   Component:   A4 Klimaautomat   2833
   Coding: 00000
   Shop #: WSC 00000
   VCID: 6D87DB8944821AB2145-50D0

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect.        Labels: 8E0-907-279-8EC.lbl
   Part No: 8E0 907 279 N
   Component: int. Lastmodul  USA 0907
   Coding: 01023
   Shop #: WSC 65536
   VCID: 3D272BC954624A32E45-4AA4

No fault code found.

-------------------------------------------------------------------------------
Address 0F: Digital Radio        Labels: 8E0-035-593-SIR.lbl
   Part No SW: 8E0 035 593 F    HW: 8E0 035 593 F
   Component: SDAR SIRIUS         0120
   Serial number: AUZ4Z7F1040029
   Shop #: WSC 00000 000 00000
   VCID: 2C01168DBA28D3BA43B-5160

1 Fault Found:
02635 - Tuner Not Enabled/Activated
            000 - -

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 8E0-959-655-94.lbl
   Part No SW: 8E0 959 655 H    HW: 8E0 959 655 H
   Component:    Airbag 9.41  H12 3840
   Revision: 91H12384    Serial number: 0036N0G0CZZ1
   Coding: 0032607
   Shop #: WSC 06325 000 00000
   VCID: 3C2126CD4A68433AD3B-8068

   Subsystem 1 - Part No: 8E0 910 339 B
   Component: BF-Gewichtsens. 002 0070

   Subsystem 2 - Serial number: 3B9PA        

   Subsystem 3 - Serial number: 0001.01.000000200000000000  63

   Subsystem 4 - Serial number: 000000  6332DRB403D98AAC5  63

   Subsystem 5 - Serial number: 98AAC5  6342DRB403DBD2A6%  63

   Subsystem 6 - Serial number: BD2A6%  6352ARB401B2E46FZ  63

   Subsystem 7 - Serial number: 2E46FZ  6362ARB401B15180A  63

   Subsystem 8 - Serial number: 15180A  63729RB401AD4AB4-  63

   Subsystem 9 - Serial number: D4AB4-  63829RB401AD4AB7/

   Subsystem 10 - Serial number: D4AB7/

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel        Labels: 8E0-953-549.lbl
   Part No: 8E0 953 549 Q
   Component: Lenks ulenmodul     0701
   Coding: 04041
   Shop #: WSC 06325
   VCID: 41DF5739289A2ED280D-4AA4

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 8E0-920-9xx-8EC.clb
   Part No SW: 8E0 920 951 G    HW: 8E0 920 951 G
   Component: KOMBI+WFS 4     H14 0120
   Revision: 0120        Serial number: 00000000000000
   Coding: 0023261
   Shop #: WSC 06436 444 84396
   VCID: 2E051C858C04A1AA6DF-5118

1 Fault Found:
01771 - Control Module for Headlight Range (J431)
            004 - No Signal/Communication

-------------------------------------------------------------------------------
Address 25: Immobilizer        Labels: 8E0-920-9xx-8EC.clb
   Part No SW: 8E0 920 951 G    HW: 8E0 920 951 G
   Component: KOMBI+WFS 4     H14 0120
   Revision: 0120        Serial number: 00000000000000
   Coding: 0023261
   Shop #: WSC 06436 444 84396
   VCID: 2E051C858C04A1AA6DF-5118

1 Fault Found:
01771 - Control Module for Headlight Range (J431)
            004 - No Signal/Communication

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr        Labels: 8E0-959-760.lbl
   Part No: 8E0 959 760
   Component: Sitzmemory R2 F     0305
   Coding: 00002
   Shop #: WSC 00000
   VCID: 71BFC7F9588AFE5230D-4B3C

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels:. 8E0-959-433-MAX.clb
   Part No: 8E0 959 433 CG
   Component: Komfortger t T7B    4035
   Coding: 11788
   Shop #: WSC 06335
   VCID: 78A9FADD3BC0AF1AF73-4AA4

   Subsystem 1 - Part No: 8E1959801G
   Component: T rsteuer.FS BRM 0706

   Subsystem 2 - Part No: 8E1959802G
   Component: T rsteuer.BF BRM 0706

   Subsystem 3 - Part No: 8E0959801E
   Component: T rsteuer.HL BRM 0606

   Subsystem 4 - Part No: 8E0959802E
   Component: T rsteuer.HR BRM 0606

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio        Labels: 8J0-035-1xx-56.clb
   Part No SW: 8E0 035 195 AC    HW: 8E0 035 195 AC
   Component: R Symphony2+    H03 0070
   Revision: 00H03000    Serial number: AUZ1Z4F2837782
   Coding: 0650102
   Shop #: WSC 06325 000 00000
   VCID: 6889AA9D6E503F9A673-5160

No fault code found.

-------------------------------------------------------------------------------
Address 77: Telephone        Labels: 8P0-862-335.lbl
   Part No SW: 8P0 862 335 J    HW: 8P0 862 335 J
   Component: FSE_255x BT     H26 0290
   Revision: 00000000    Serial number: 00000005010357
   Coding: 0001677
   Shop #: WSC 06325 000 00000
   VCID: 3D272BC951624A32E45-50D0

No fault code found.

End----------(Elapsed Time: 05:10, VBatt start/end: 12.5V/12.2V)-----------
------------------------------4 Faults Found-------------------------------

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Address 01: DTCs cleared
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Address 03: DTCs cleared
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Address 08: DTCs cleared
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Address 09: DTCs cleared
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Address 0F: DTCs cleared
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Address 15: DTCs cleared
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Address 16: DTCs cleared
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Address 17: DTCs cleared
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Address 25: DTCs cleared
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Address 36: DTCs cleared
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Address 46: DTCs cleared
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Address 56: DTCs cleared
Click to expand...

Put a snip of the wiring diagram, which shows this valve connections and where they come from.
 
   #6  
A

ahidley

Verified VCDS User
Verified
Joined
Apr 23, 2023
Messages
76
Reaction score
9
Location
Pennsylvania, USA
VCDS Serial number
C?ID=549110
More conversation with chatgpt

On the BKH 3.2 FSI, the high-pressure pump itself is a purely mechanical pump driven by the intake camshaft. If your pump has no electrical connector, that's consistent with the design.
The confusion comes from the fault description "Fuel Pressure Regulator Valve (N276) - P2294". On some FSI engines (especially the 2.0T), N276 is mounted on the HPFP. On the BKH 3.2, Audi's fault text can still refer to N276 even though the fuel pressure control hardware is arranged differently.
Since you've reported that:
VCDS shows P2294 (N276 electrical fault)
Fuel pressure is around 2.8 bar
The HPFP has no wiring
then I would stop looking at the HPFP itself and start looking at the low-pressure fuel control system:
Fuel pump control module.
In-tank fuel pump electrical circuit.
Fuel pressure sensor wiring.
Harness between the engine ECU and the fuel system components.
The reason is that 2.8 bar is low-pressure-side pressure, not high-pressure FSI rail pressure. The high-pressure side normally operates at tens of bar even at idle.
One thing I'd like to verify from the VCDS scan you uploaded earlier is the full fault text and freeze-frame data. On Audis, P2294 can be triggered by an electrical fault in the pressure-control circuit, and the exact wording (open circuit, short to ground, short to plus, intermittent) points directly at the wiring issue.
From what you've told me so far, I do not think the mechanical HPFP itself is the primary suspect. The fact that it has no wiring is expected on the BKH engine. The next step is identifying which component Audi is calling "N276" in the BKH wiring diagram and tracing that circuit rather than the pump itself.

Yes. I dug further into the BKH documentation.
For the 2007 Audi A4 3.2 FSI BKH, the factory service information points to a Fuel Metering Valve (N290) as the electrically controlled fuel valve associated with the high-pressure system, and the diagnostic procedure specifically has you access the N290 electrical connector near the front of the engine. �
Workshop Manuals
This would explain exactly what you've been telling me:
Mechanical HPFP
No electrical connector on the pump body itself
Yet VCDS reports P2294 "N276"
The fault description may be misleading because Audi reused fuel-pressure-regulator terminology across different FSI systems.
Before we go any further, I need one piece of information from the VCDS fault entry you already have.
Does the fault read something like:
008852 - Fuel Pressure Regulator Valve (N276)
Open Circuit
Short to Ground
Short to Plus
Electrical Malfunction
or something else?
The wording after P2294 is critical.
Also, if you can post the entire VCDS fault text exactly as shown, I can tell you which circuit to test and likely identify:
the connector location,
the fuse,
the ECM pin,
and the expected voltage readings.
Based on everything you've told me so far, I no longer think there's a missing connector on your HPFP. I think we're dealing with either the fuel metering valve circuit (N290), the fuel pressure sensor (G247), or their wiring, and VCDS is translating the fault under the generic N276 description. �

Picture of fault goes here:



Thank you. The screenshot tells us something important.
Your fault is:
008852 - Fuel Pressure Regulator Valve (N276)
P2294 - 009 - Open Circuit
An open circuit is an electrical fault. The ECU is not complaining about fuel pressure being too low or too high. It is complaining that it cannot see the electrical load it expects on the N276 circuit. �
wiki.ross-tech.com +1
The key clue is this note from Ross-Tech:
On some engines, the N276 may be referred to as N290 in the factory wiring diagram. �
wiki.ross-tech.com +1
That matches what you've been telling me all along:
BKH 3.2 FSI
Mechanical HPFP with no electrical connector
P2294 Open Circuit
So I now believe the component you need to find is the N290 fuel metering valve, not a regulator physically mounted on the pump as on the 2.0T engines. �
wiki.ross-tech.com +1
The next test I'd perform
With VCDS:
01 Engine → Advanced Measuring Values
Look for:
Fuel Rail Pressure (actual)
Fuel Rail Pressure (specified)
Fuel Pressure Regulator Duty Cycle
Fuel Metering Valve Duty Cycle
Low Pressure Fuel (actual)
If the ECU is commanding the valve but sees an open circuit, one of those duty-cycle values may be stuck at 0% or 100%.
What is most likely?
Based on your exact code:
Broken wire in the N290/N276 circuit.
Unplugged connector.
Failed N290 solenoid coil.
Less likely: ECU driver fault. �
wiki.ross-tech.com +1
What I'd like to locate next
Can you take a photo of:
The front driver's-side cylinder head area around the HPFP.
Any 2-pin fuel-related connectors near the fuel rail.
Not because I doubt the pump has no wires—I agree with you now—but because I want to identify exactly which component Audi is calling N290/N276 on the BKH. Once I can see that area, I can tell you which connector to unplug and what resistance reading you should get with a multimeter.
The fact that the fault frequency is only 1 and the reset counter is 40 makes me wonder if this could even be a connector or harness issue rather than a failed component. The code description "Open Circuit" is exactly what you'd get if the ECU suddenly lost continuity to the valve. �
wiki.ross-tech.com +1
 
   #7  
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ahidley

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More conversation with chatgpt

Thank you. The screenshot tells us something important.
Your fault is:
008852 - Fuel Pressure Regulator Valve (N276)
P2294 - 009 - Open Circuit
An open circuit is an electrical fault. The ECU is not complaining about fuel pressure being too low or too high. It is complaining that it cannot see the electrical load it expects on the N276 circuit. �
wiki.ross-tech.com +1
The key clue is this note from Ross-Tech:
On some engines, the N276 may be referred to as N290 in the factory wiring diagram. �
wiki.ross-tech.com +1
That matches what you've been telling me all along:
BKH 3.2 FSI
Mechanical HPFP with no electrical connector
P2294 Open Circuit
So I now believe the component you need to find is the N290 fuel metering valve, not a regulator physically mounted on the pump as on the 2.0T engines. �
wiki.ross-tech.com +1
The next test I'd perform
With VCDS:
01 Engine → Advanced Measuring Values
Look for:
Fuel Rail Pressure (actual)
Fuel Rail Pressure (specified)
Fuel Pressure Regulator Duty Cycle
Fuel Metering Valve Duty Cycle
Low Pressure Fuel (actual)
If the ECU is commanding the valve but sees an open circuit, one of those duty-cycle values may be stuck at 0% or 100%.
What is most likely?
Based on your exact code:
Broken wire in the N290/N276 circuit.
Unplugged connector.
Failed N290 solenoid coil.
Less likely: ECU driver fault. �
wiki.ross-tech.com +1
What I'd like to locate next
Can you take a photo of:
The front driver's-side cylinder head area around the HPFP.
Any 2-pin fuel-related connectors near the fuel rail.
Not because I doubt the pump has no wires—I agree with you now—but because I want to identify exactly which component Audi is calling N290/N276 on the BKH. Once I can see that area, I can tell you which connector to unplug and what resistance reading you should get with a multimeter.
The fact that the fault frequency is only 1 and the reset counter is 40 makes me wonder if this could even be a connector or harness issue rather than a failed component. The code description "Open Circuit" is exactly what you'd get if the ECU suddenly lost continuity to the valve. �
wiki.ross-tech.com +1
 
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ahidley

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The fault pic is too large to upload here on this forum. But it is in my first log file of the fault in the engine 01
 
   #9  
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ahidley

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So now chatgpt says that vcds may have changed the part to n290 vs the callous in the fault of n276?? Nice
 
   #10  
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ahidley

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Yes. Based on the factory BKH wiring information, the component you're after is the Fuel Metering Valve N290, which VCDS is labeling as N276 for the P2294 fault. �
Portal Diagnostov +1
The relevant factory circuit is:

Fuse S282
|
| 12V (ignition on)
|
N290
Fuel Metering Valve
|
|
ECU J623
(low-side driver)
The factory wiring page for the BKH specifically lists:
J623 = Engine Control Module
N290 = Fuel Metering Valve
S282 = Engine Electronics Fuse
T14a = 14-pin connector in left engine compartment
T60 / T94 = ECU connectors
This is the exact circuit associated with the fuel metering valve. �
Portal Diagnostov
The factory test procedure for your BKH says to:
Remove the front engine cover.
Remove three screws and the engine lifting eye.
Access the Fuel Metering Valve (N290) electrical connector.
Perform electrical checks at that connector. �
Charm
That is the strongest evidence yet that Audi expects an electrical connector on the N290 metering valve, not on the mechanical portion of the HPFP itself. �
Charm +1
Since your fault is:
P2294 – Open Circuit
I would check in this order:
Fuse S282 for power to N290.
Presence of battery voltage at the N290 connector with ignition on.
Resistance of the N290 coil.
Continuity from N290 to the ECM.
Harness damage where it bends around the front of the engine. Audi technicians have reported wiring failures in this area on 3.2 BKH engines. �
Charm +1
Can you tell me one thing:
When you stand in front of the car and look at the driver's-side front cylinder head, do you see any 2-wire connector on the fuel rail assembly or near the hard high-pressure fuel line, even if it's not physically attached to the pump?
If you do, I can narrow down the exact connector location and likely wire colors from the factory track diagram.
 
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T

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From my opinion, you have two options, continue the nonsense with AI or stick to a human, me. Make a choice, my time is limited on Earth. I don't care the picture is too big, make it fit.
 
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Backprobe J623 plug T60 pin 45 wire bl/ge with an incandescent test lamp, ignition on, should lit against battery minus. If not, work your way backwards to N290 plug and check if any of the wires have plus with test lamp, if not, check fuse S282 15A in engine bay fuse box. Fuse box view might be good, might not.
 

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   #14  
Ziddywerks

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ahidley said:
Hello, Im having a terriable time with a MIL on my 2007 audi a4 with a 3.2 engine.
The MIL is P2294. Sounds simple right? So I use chatgpt AI for assistance and it tells me that the fuel pressure regulator vaalve commonly fails because of broken wires near the plug. OK makes sense. Then I submitted the VCDS log and chatgpt sees a fault in the immoblizer caused by the headlight module. It says that a failing headlight module can send bad info via the canbus and cause the imoblizer to detect that and put the car into limp mode, which it does. Chatgpt said to disconnect the headlight module and delete the codes and test drive the car. I did and it ran AWSOME. I recorded that log file and chatgpt said it also needs high pressure info. The problem is the terminology that chatgpt uses vs vcds for the info blocks as well as vcds only allowing 12 fields of info per session file. So I thought I had the correct info numbers for the advanced measuring blocks and I went for another run to log it again. This time the car is shutting off intermittently for a half second and then the check engine light comes back on. On the last run the car was up to temp. Perhaps the n276 is failing when hot? on this car the n276 is NOT located on the high pressure fuel pump which is located at the FRONT DRIVERS side , USA model. AS I google search for a part number for the n276 fuel pressure regulator valve I cant seem to find one that has 2 wires . They all come back without electrical connections. The n276 is NOT mounted to the fuel pump, aka no wires from the hpfp.
Click to expand...
Let me be blunt... are people fucking high listening to garbagegpt to fix vehicles. A headlight module will not cause any issues with immobilizer its a load of bullshit. Secondly you're either asking for help from professionals here to narrow down the issue or you can talk round and round in circules with garbagegpt that is pulling nonsense from all corners of the internet whether it be true or fiction, rolling into a fat blunt and smoking yourself retarded with that hot garbage. Sorry thats the reality. The problem is simple. It's an open circuit for the valve. check the resistance of the valve cold and then when heat soaked, verify if its in spec or if you even get a reading when hot. If you have no reading when hot then you know the valve has failed. If you have a reading and its in spec then its time to check the wiring for the valve from the valve to the ecm short and sweet not some garbagegpt misinformation. That is all.
 
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   #15  
Ziddywerks

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Also to clarify that nonsense garbage gpt fed you, I should have checked before hand but there is no N276 in this vehicle, and the code you got is for Fuel Pressure Regulator 2 Control Circuit. You need to be looking at the High side fuel pressure sensor under the intake manifold G247, or it would be wise to check fuel filter and pump pump delivery rate prior to this also. Number 2 is G247. Start checking wiring to that sensor.

1781783644008.png
 
   #16  
Uwe

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ahidley said:
So I use chatgpt AI for assistance
Click to expand...
ahidley said:
More conversation with chatgpt
Click to expand...
ahidley said:
So now chatgpt says
Click to expand...

31oT1XG.jpg


-Uwe-
 
   #18  
Jef

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You may notice a slight bias against AI diagnostics.... it is becoming something of a running joke here. I'm pretty sure AI would tell you to stuff a fork in an electrical output to test for power.... So lets do this.... you've got some issues, here is a scan... what next?

008852 - Fuel Pressure Regulator Valve (N276)
P2294 - 009 - Open Circuit - MIL ON
Click to expand...

So in the wiring diagram, this will be the N290, not N276. N290 has two wires.

/1 = red/blue from fuse S282, but there is T14a/4 between N290 and the fuse
/2 = blue/yellow to ECM T60/44, but there is T14a/11 between N290 and ECM

Do you have power to /1? Light up a test light? I"m guessing the N282 fuse is good because it also powers up a few other items and there are no codes. The T14a connector, (engine compartment, left), have you done visual inspection on it? Have you ohm tested the N290? If so, what did you get?


01771 - Control Module for Headlight Range (J431)
004 - No Signal/Communication
Click to expand...
For any given control module to communicate, you must have the holy trinity!
G8YGwbm.jpeg

Lets start with the bare basics... fuse S10 good? The J431 is located behind the glove box... gotten hands on with it yet?

Please note... any statement of "but AI says" comes up, we are breaking out the pitch forks. :eek:

Lunch time....
 
   #19  
nugentp

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ChatGPT has its place and it has surprised me on multiple occasions with this kind of thing when I either wanted it to help me on a motor I never seen before or if it approached a problem on a motor I did know about in a half sensible way. Sometimes it's on the right track, sometimes it can take you down the wrong rabbit hole entirely. I have had it save some time when coding a few bench Arduino projects as well but you have to know it's limits and it won't substitute the knowledge and approach of an experienced technicians way of going about things.
 
   #20  
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AI is great for sifting through large datasets, but it completely lacks intuition or experience, and it's trained on "the internet", meaning it has more bad information than accurate information, particularly in the automotive world where people do really stupid things all the time and grace us with half-witted write-ups about them.

Putting your VCDS autoscan into an AI was probably fine, but the moment it started going on about the immobilizer and the headlight module, you should have known it wasn't going to work out. You asked it about a fuel pressure issue and it went "Nope, we're doing this now" on you.

@Ziddywerks gave you the correct advice, albeit with a very sharp tone. Please disregard the harshness with which he delivered it and follow his genuine advice.
 
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