I'd the same problem on an 8l a3 mate and it was relay 109 under steering wheel that was for fuel pump. It wAs out about 1mm I cable tied it in and never happened again. Maybe check
Take under steering wheel cover off and check the relays there are all in. Google to see which one in b7 is for fuel.
Thanks for the heads up. i will check the relays under the steering wheel tonight making sure they are all in place.
i'm guessing that its not the fuel pump due to the engine ecu not showing up on VCDS. I'm now thinking that there is a faulty relay somewhere which supply's the ecu module power. So if anyone knows which relay switches the power to the engine module and where i could find it id be very grateful
if not i'm going to have to get my laptop out on my day off on Monday and try and work out which relay is which.
until then i'm back using public transport
heres a copy of the scan log
as you can see there is no engine module listed which is making me think that its not getting power and hence not showing when i scan the car
the second one is when i eventually get the car going and its there and all ok
any other suggestions or help will be gratefully received
missing controller scan
Mileage: 84850km/52723miles-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 8E0-910-517.clb
Part No SW: 8E0 910 517 H HW: 8E0 614 517 BF
Component: ESP8 FRONT H06 0140
Revision: 00000000 Serial number: 00000000000000
Coding: 0004405
Shop #: WSC 00672 785 00200
VCID: 2C5C73A58FD9477E17F-8079
1 Fault Found:
01314 - Engine Control Module
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 1
Fault Frequency: 1
Reset counter: 40
Time Indication: 0
Freeze Frame:
Hex Value: 0x0080
Hex Value: 0x0722
Hex Value: 0x0013
Hex Value: 0x8598
Hex Value: 0x0001
-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 8E0-820-043.lbl
Part No: 8E0 820 043 BL
Component: A4 Klimaautomat 3233
Coding: 00100
Shop #: WSC 00672
VCID: 6CDCB3A51C59877E57F-5140
No fault code found.
-------------------------------------------------------------------------------
Address 09: Cent. Elect. Labels: 8E0-907-279-8EC.lbl
Part No: 8E0 907 279 N
Component: int. Lastmodul ECE 0907
Coding: 21001
Shop #: WSC 00672
VCID: 3D7A4EE137A3DEF6B01-4B04
1 Fault Found:
02071 - Local Databus
57-00 - Electric Circuit Failure
-------------------------------------------------------------------------------
Address 15: Airbags Labels: 8H0-959-655-94.lbl
Part No SW: 8H0 959 655 G HW: 8H0 959 655 G
Component: Airbag 9.42 H01 1840
Revision: 92H01184 Serial number: 003CZ000AK60
Coding: 0071114
Shop #: WSC 00672 785 00200
VCID: 3E7849ED69A5C5EEA9B-806B
Subsystem 1 - Serial number: 6332BRB403B33275F
Subsystem 2 - Serial number: 6342BRB403B330F1I
Subsystem 3 - Serial number: 63729RB403BE72EF6
Subsystem 4 - Serial number: 63829RB403BE7297.
No fault code found.
-------------------------------------------------------------------------------
Address 16: Steering wheel Labels: 8E0-953-549.lbl
Part No: 8E0 953 549 Q
Component: Lenksáulenmodul 0801
Coding: 04011
Shop #: WSC 00672
VCID: 418232114B5BBA16D49-4B04
No fault code found.
-------------------------------------------------------------------------------
Address 17: Instruments Labels: 8E0-920-9xx-8EC.lbl
Part No SW: 8H0 920 951 D HW: 8H0 920 951 D
Component: KOMBI+WFS 4 H14 0200
Revision: 0200 Serial number: 00000000000000
Coding: 0006411
Shop #: WSC 00847 210 86431
VCID: 2E5879ADBAC5356E39B-5140
1 Fault Found:
01314 - Engine Control Module
004 - No Signal/Communication
-------------------------------------------------------------------------------
Address 25: Immobilizer Labels: 8E0-920-9xx-8EC.lbl
Part No SW: 8H0 920 951 D HW: 8H0 920 951 D
Component: KOMBI+WFS 4 H14 0200
Revision: 0200 Serial number: 00000000000000
Coding: 0006411
Shop #: WSC 00847 210 86431
VCID: 2E5879ADBAC5356E39B-5140
1 Fault Found:
01314 - Engine Control Module
004 - No Signal/Communication - Intermittent
-------------------------------------------------------------------------------
Address 46: Central Conv. Labels: 8E0-959-433-MAX.lbl
Part No: 8H0 959 433 M
Component: Komfortgerát T3B 5442
Coding: 07855
Shop #: WSC 00672
VCID: 3E7849ED3AA5C5EEA9B-4B04
Subsystem 1 - Part No: 8H2959802D
Component: Tõrsteuer.FS BRM 0205
Subsystem 2 - Part No: 8H2959801D
Component: Tõrsteuer.BF BRM 0205
Subsystem 3 - Part No: 8H0959801A
Component: Tõrsteuer.HL BRM 0003
Subsystem 4 - Part No: 8H0959802A
Component: Tõrsteuer.HR BRM 0003
3 Faults Found:
01616 - Signal Wire to Interior Monitor
79-10 - Please Check Fault Codes - Intermittent
01616 - Signal Wire to Interior Monitor
49-10 - No Communications - Intermittent
00956 - Key 2
35-10 - - - Intermittent
-------------------------------------------------------------------------------
Address 56: Radio Labels: 8J0-035-1xx-56.clb
Part No SW: 8E0 035 186 AL HW: 8E0 035 186 AL
Component: R Concert2+ H02 0270
Revision: 00H02000 Serial number: AUZ1Z3H0813398
Coding: 0730331
Shop #: WSC 00672 785 00200
VCID: 71E2A2D16B7B6A96649-5140
No fault code found.
-------------------------------------------------------------------------------
Address 77: Telephone Labels: 8P0-862-335.lbl
Part No SW: 8P0 862 335 S HW: 8P0 862 335 S
Component: FSE_256x BT H34 0550
Revision: 00000000 Serial number: 00000005079615
Coding: 0001822
Shop #: WSC 06314 000 00000
VCID: 4688210D32759D2EE1B-5122
No fault code found.
End ---------------------------------------------------------------------
scan 2 when the cars running
hassis Type: 8H (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
Mileage: 84850km/52723miles
-------------------------------------------------------------------------------
Address 01: Engine Labels: 03G-906-016-BPW.clb
Part No SW: 03G 906 016 KN HW: 03G 906 016 KN
Component: R4 2,0L EDC 000SG 9894
Revision: --H06--- Serial number:
Coding: 0000072
Shop #: WSC 00847 210 86431
VCID: 79F29AF1300B22D6DC9-802C
No fault code found.
Readiness: 0 0 0 0 0
-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 8E0-910-517.clb
Part No SW: 8E0 910 517 H HW: 8E0 614 517 BF
Component: ESP8 FRONT H06 0140
Revision: 00000000 Serial number: 00000000000000
Coding: 0004405
Shop #: WSC 00672 785 00200
VCID: 2C5C73A58FD9477E17F-8079
1 Fault Found:
01314 - Engine Control Module
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 1
Fault Frequency: 1
Reset counter: 40
Time Indication: 0
Freeze Frame:
Hex Value: 0x0080
Hex Value: 0x0722
Hex Value: 0x0013
Hex Value: 0x8598
Hex Value: 0x0001
-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 8E0-820-043.lbl
Part No: 8E0 820 043 BL
Component: A4 Klimaautomat 3233
Coding: 00100
Shop #: WSC 00672
VCID: 6CDCB3A51C59877E57F-515C
No fault code found.
-------------------------------------------------------------------------------
Address 09: Cent. Elect. Labels: 8E0-907-279-8EC.lbl
Part No: 8E0 907 279 N
Component: int. Lastmodul ECE 0907
Coding: 21001
Shop #: WSC 00672
VCID: 3D7A4EE137A3DEF6B01-4B1C
1 Fault Found:
02071 - Local Databus
57-00 - Electric Circuit Failure
-------------------------------------------------------------------------------
Address 15: Airbags Labels: 8H0-959-655-94.lbl
Part No SW: 8H0 959 655 G HW: 8H0 959 655 G
Component: Airbag 9.42 H01 1840
Revision: 92H01184 Serial number: 003CZ000AK60
Coding: 0071114
Shop #: WSC 00672 785 00200
VCID: 3E7849ED69A5C5EEA9B-806B
Subsystem 1 - Serial number: 6332BRB403B33275F
Subsystem 2 - Serial number: 6342BRB403B330F1I
Subsystem 3 - Serial number: 63729RB403BE72EF6
Subsystem 4 - Serial number: 63829RB403BE7297.
No fault code found.
-------------------------------------------------------------------------------
Address 16: Steering wheel Labels: 8E0-953-549.lbl
Part No: 8E0 953 549 Q
Component: Lenksáulenmodul 0801
Coding: 04011
Shop #: WSC 00672
VCID: 418232114B5BBA16D49-4B1C
No fault code found.
-------------------------------------------------------------------------------
Address 17: Instruments Labels: 8E0-920-9xx-8EC.lbl
Part No SW: 8H0 920 951 D HW: 8H0 920 951 D
Component: KOMBI+WFS 4 H14 0200
Revision: 0200 Serial number: 00000000000000
Coding: 0006411
Shop #: WSC 00847 210 86431
VCID: 2E5879ADBAC5356E39B-5140
1 Fault Found:
01314 - Engine Control Module
004 - No Signal/Communication - Intermittent
-------------------------------------------------------------------------------
Address 25: Immobilizer Labels: 8E0-920-9xx-8EC.lbl
Part No SW: 8H0 920 951 D HW: 8H0 920 951 D
Component: KOMBI+WFS 4 H14 0200
Revision: 0200 Serial number: 00000000000000
Coding: 0006411
Shop #: WSC 00847 210 86431
VCID: 2E5879ADBAC5356E39B-5140
1 Fault Found:
01314 - Engine Control Module
004 - No Signal/Communication - Intermittent
-------------------------------------------------------------------------------
Address 46: Central Conv. Labels: 8E0-959-433-MAX.lbl
Part No: 8H0 959 433 M
Component: Komfortgerát T3B 5442
Coding: 07855
Shop #: WSC 00672
VCID: 3E7849ED3AA5C5EEA9B-4B04
Subsystem 1 - Part No: 8H2959802D
Component: Tõrsteuer.FS BRM 0205
Subsystem 2 - Part No: 8H2959801D
Component: Tõrsteuer.BF BRM 0205
Subsystem 3 - Part No: 8H0959801A
Component: Tõrsteuer.HL BRM 0003
Subsystem 4 - Part No: 8H0959802A
Component: Tõrsteuer.HR BRM 0003
3 Faults Found:
01616 - Signal Wire to Interior Monitor
79-10 - Please Check Fault Codes - Intermittent
01616 - Signal Wire to Interior Monitor
49-10 - No Communications - Intermittent
00956 - Key 2
35-10 - - - Intermittent
-------------------------------------------------------------------------------
Address 56: Radio Labels: 8J0-035-1xx-56.clb
Part No SW: 8E0 035 186 AL HW: 8E0 035 186 AL
Component: R Concert2+ H02 0270
Revision: 00H02000 Serial number: AUZ1Z3H0813398
Coding: 0730331
Shop #: WSC 00672 785 00200
VCID: 71E2A2D16B7B6A96649-5122
No fault code found.
-------------------------------------------------------------------------------
Address 77: Telephone Labels: 8P0-862-335.lbl
Part No SW: 8P0 862 335 S HW: 8P0 862 335 S
Component: FSE_256x BT H34 0550
Revision: 00000000 Serial number: 00000005079615
Coding: 0001822
Shop #: WSC 06314 000 00000
VCID: 4688210D32759D2EE1B-5140
No fault code found.
End ---------------------------------------------------------------------