Hello,
I have an issue with an A4 B7 3.2 FSI engine that cranks but does not start.
As for visible symptoms apart from the non starting condition, I hear a ticking noise when then engine cranks.
The car ran really rough before I replaced both upper chain tensioners. Before replacing the tensioners, the timing seemed OK although one of the tensioners was missing a plastic guide, which was also creating a rattle noise when releasing the gas pedal.
The engine would hardly start, I had to accelerate a bit to get it started and then it barely held idle.
After I replaced the tensioners, reconnected everything I had disconnected, checked the timing twice before putting the chain covers, I first attempted to start the engine without clearing the codes that were present before the repair and it did not start.
I then proceeded to clear all engine codes to see if new ones popped up and I tried starting again. No dice, the engine cranks and there is a quite loud ticking noise when it revs.
Here is when this code popped up : 16730/P0346
I also tried Output Tests on the engine module and everything went well except for one odd thing that I don't know if it relates to the issue : when doing the sequential test of the ECM Power Relay, I noticed the brake lights were flashing at the same pace as the relay clicked. Is this normal? I think I ran this test on other cars already but did not really look at the back of the car when doing it...
The battery is fully charged.
Now what I have done since the no start issue :
- removed spark plugs and rotated the engine by hand to ensure nothing was hitting. I was pretty sure of my timing work when putting back the camshaft adjusters but you never know, and I really don't like when engines make that kind of noise.
- checked timing, all timing special tools mount perfectly (camshafts + cranshaft pin) without using any force
- swapped G163 intake camshaft sensor (Bank 2) with G40 intake camshaft sensor (Bank 1) and tried starting, the failure code did not move to the other bank.
- swapped N208 intake camshaft actuator (Bank 2) with N205 intake camshaft actuator (Bank 1) and tried starting, that seemed to have added the 16725/P0341 code.
I am completely lost here, and have a couple of questions to ask the forum :
- can those codes prevent an engine start? I see from lots of searches on forums that people usually get then with running engines, it might point to chain/timing issues but does not necessarily seems related to no start conditions.
- is there anything else I can check for this no start condition?
- can the ticking noise come from a camshaft adjuster ? They might be empty of oil since they were removed and only reinstalled a couple of days later. Since the engine has not started yet, it has not built oil pressure I guess.
- why on earth would swapping the camshaft solenoids add a code and not just move it to the other bank (or not) ?
- I can hear no fuel pump noise when turning the ignition on, although it was noticeably running when I did the output tests. Is that normal? I haven't touched the fuel system though so if it is airtight, I guess the priming pump does not run at each start.
Below is a full autoscan if that helps...
Thanks for your support!
I have an issue with an A4 B7 3.2 FSI engine that cranks but does not start.
As for visible symptoms apart from the non starting condition, I hear a ticking noise when then engine cranks.
The car ran really rough before I replaced both upper chain tensioners. Before replacing the tensioners, the timing seemed OK although one of the tensioners was missing a plastic guide, which was also creating a rattle noise when releasing the gas pedal.
The engine would hardly start, I had to accelerate a bit to get it started and then it barely held idle.
After I replaced the tensioners, reconnected everything I had disconnected, checked the timing twice before putting the chain covers, I first attempted to start the engine without clearing the codes that were present before the repair and it did not start.
I then proceeded to clear all engine codes to see if new ones popped up and I tried starting again. No dice, the engine cranks and there is a quite loud ticking noise when it revs.
Here is when this code popped up : 16730/P0346
I also tried Output Tests on the engine module and everything went well except for one odd thing that I don't know if it relates to the issue : when doing the sequential test of the ECM Power Relay, I noticed the brake lights were flashing at the same pace as the relay clicked. Is this normal? I think I ran this test on other cars already but did not really look at the back of the car when doing it...
The battery is fully charged.
Now what I have done since the no start issue :
- removed spark plugs and rotated the engine by hand to ensure nothing was hitting. I was pretty sure of my timing work when putting back the camshaft adjusters but you never know, and I really don't like when engines make that kind of noise.
- checked timing, all timing special tools mount perfectly (camshafts + cranshaft pin) without using any force
- swapped G163 intake camshaft sensor (Bank 2) with G40 intake camshaft sensor (Bank 1) and tried starting, the failure code did not move to the other bank.
- swapped N208 intake camshaft actuator (Bank 2) with N205 intake camshaft actuator (Bank 1) and tried starting, that seemed to have added the 16725/P0341 code.
I am completely lost here, and have a couple of questions to ask the forum :
- can those codes prevent an engine start? I see from lots of searches on forums that people usually get then with running engines, it might point to chain/timing issues but does not necessarily seems related to no start conditions.
- is there anything else I can check for this no start condition?
- can the ticking noise come from a camshaft adjuster ? They might be empty of oil since they were removed and only reinstalled a couple of days later. Since the engine has not started yet, it has not built oil pressure I guess.
- why on earth would swapping the camshaft solenoids add a code and not just move it to the other bank (or not) ?
- I can hear no fuel pump noise when turning the ignition on, although it was noticeably running when I did the output tests. Is that normal? I haven't touched the fuel system though so if it is airtight, I guess the priming pump does not run at each start.
Below is a full autoscan if that helps...
Code:
Monday,13,September,2021,15:55:55:24005
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 21.3.0.0 (x64)
Data version: 20210226 DS325.0
www.Ross-Tech.com
VIN: WAUZZZ8E45XXXXXXX License Plate: NO START
Mileage: 172160km-106975mi 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: WAUZZZ8E45XXXXXXX Mileage: 172160km-106975miles
-------------------------------------------------------------------------------
Address 01: Engine (AUK) Labels:. 06E-910-559-BKH.clb
Part No SW: 8E0 910 559 B HW: 8E0 907 559
Component: 3.2l V6 FSI 0020
Revision: --H16--- Serial number:
Coding: 010C0003180F0820
Shop #: WSC 06325 000 00000
VCID: 2C5CF49D8F56F2EB4F-8078
2 Faults Found:
16730 - Camshaft Position Sensor (G163)
P0346 - 006 - Implausible Signal
Freeze Frame:
Fault Status: 00010001
Fault Priority: 4
Fault Frequency: 1
Reset counter: 0
Mileage: 0 km
Time Indication: 0
Freeze Frame:
RPM: 192 /min
Mass Air / Rev.: 0.0 mg/str
Temperature: 21.0°C
Start
Bin. Bits: 00001000
Speed: 0.0 km/h
16725 - Camshaft Position Sensor (G40)
P0341 - 006 - Implausible Signal
Freeze Frame:
Fault Status: 00010001
Fault Priority: 4
Fault Frequency: 1
Reset counter: 0
Mileage: 0 km
Time Indication: 0
Freeze Frame:
RPM: 96 /min
Mass Air / Rev.: 0.0 mg/str
Temperature: 21.0°C
Start
Bin. Bits: 00001000
Speed: 0.0 km/h
Readiness: 0110 0101
-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 8E0-910-517.clb
Part No SW: 8E0 910 517 C HW: 8E0 614 517 BB
Component: ESP8 quattro H04 0180
Revision: 00000000 Serial number: 00000000000000
Coding: 0004379
Shop #: WSC 06325 000 00000
VCID: 27560BB196B0D1B3A2-8072
1 Fault Found:
01826 - Sensor for Steering Angle (G85); Supply Voltage Terminal 30
000 - -
Freeze Frame:
Fault Status: 01100000
Fault Priority: 3
Fault Frequency: 2
Reset counter: 40
Time Indication: 0
Freeze Frame:
Hex Value: 0x0000
Hex Value: 0x4222
Hex Value: 0x00FF
Hex Value: 0xFF96
Hex Value: 0x00FF
-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 8E0-820-043.lbl
Part No: 8E0 820 043 AJ
Component: A4 Klimaautomat 2731
Coding: 00000
Shop #: WSC 00000
VCID: 69D24D89132427C374-50E6
1 Fault Found:
01206 - Signal for Duration of Ignition Off Time
27-00 - Implausible Signal
-------------------------------------------------------------------------------
Address 09: Cent. Elect. Labels: 8E0-907-279-8EC.lbl
Part No: 8E0 907 279 L
Component: int. Lastmodul ECE 0304
Coding: 10121
Shop #: WSC 06325
VCID: 3B7EC7C129386553D6-4A9C
No fault code found.
-------------------------------------------------------------------------------
Address 15: Airbags Labels: 8E0-959-655-94.lbl
Part No SW: 8E0 959 655 G HW: 8E0 959 655 G
Component: Airbag 9.41 H10 3230
Revision: 91H10323 Serial number: 0036M002SE2Y
Coding: 0034622
Shop #: WSC 06325 000 00000
VCID: 3B7EC7C17A386553D6-806E
Subsystem 1 - Serial number: 6332DRB401B90C0EU
Subsystem 2 - Serial number: 6342DRB401BA4726P
Subsystem 3 - Serial number: 6352ARB4004F5ECC1
Subsystem 4 - Serial number: 6362ARB4004F51EBX
Subsystem 5 - Serial number: 63729RB400504D39H
Subsystem 6 - Serial number: 63829RB400503E04A
No fault code found.
-------------------------------------------------------------------------------
Address 16: Steering wheel Labels: 8E0-953-549.lbl
Part No: 8E0 953 549 Q
Component: Lenksáulenmodul 0601
Coding: 04012
Shop #: WSC 06325
VCID: 4182B5294BD40F838C-4ACE
No fault code found.
-------------------------------------------------------------------------------
Address 17: Instruments Labels: 8E0-920-9xx-8EC.lbl
Part No SW: 8E0 920 900 S HW: 8E0 920 900 S
Component: KOMBI+WFS 4 H12 0040
Revision: 0040 Serial number: 00000000000000
Coding: 0023041
Shop #: WSC 11111 111 11111
VCID: 346CECFD5466AA2B17-5102
No fault code found.
-------------------------------------------------------------------------------
Address 25: Immobilizer Labels: 8E0-920-9xx-8EC.lbl
Part No SW: 8E0 920 900 S HW: 8E0 920 900 S
Component: KOMBI+WFS 4 H12 0040
Revision: 0040 Serial number: 00000000000000
Coding: 0023041
Shop #: WSC 11111 111 11111
VCID: 346CECFD5466AA2B17-50E6
No fault code found.
-------------------------------------------------------------------------------
Address 46: Central Conv. Labels:. 8E0-959-433-MAX.clb
Part No: 8E0 959 433 BR
Component: Komfortgerát T23 3132
Coding: 07024
Shop #: WSC 06325
VCID: 02007A250E52D49BD5-4AB4
Subsystem 1 - Part No: 8E1959801B
Component: Tõrsteuer.FS BRM 0205
Subsystem 2 - Part No: 8E1959802B
Component: Tõrsteuer.BF BRM 0205
Subsystem 3 - Part No: 8E0959801A
Component: Tõrsteuer.HL BRM 0205
Subsystem 4 - Part No: 8E0959802A
Component: Tõrsteuer.HR BRM 0205
No fault code found.
-------------------------------------------------------------------------------
Address 55: Headlight Range Labels: 4F0-910-357.lbl
Part No SW: 4F0 910 357 C HW: 4F0 907 357 C
Component: AFS 1 H01 0020
Revision: 00000001 Serial number:
Coding: 0000019
Shop #: WSC 40219 188 93149
VCID: 264806B591BAC8BB99-8072
Subsystem 1 - Part No: 8E0 941 329 A
Component: AFS-Modul links H05 0030
Subsystem 2 - Part No: 8E0 941 329 A
Component: AFS-Modul rechtsH05 0030
No fault code found.
-------------------------------------------------------------------------------
Address 56: Radio Labels: 8E0-035-1xx-56.lbl
Part No: 8E0 035 186 D
Component: concert II GRO 0004
Coding: 01267
Shop #: WSC 06325
VCID: 2854088DC8AEDECBAB-4AB4
No fault code found.
-------------------------------------------------------------------------------
Address 76: Park Assist Labels: 8E0-919-283-8EC.lbl
Part No SW: 8E0 919 283 B HW: 8E0 919 283 B
Component: Parkhilfe 4-Kan H06 0020
Revision: 00H06000 Serial number: 00067802030504
Coding: 0010114
Shop #: WSC 06325 000 00000
VCID: 2F66E391BD4089F36A-50E6
No fault code found.
-------------------------------------------------------------------------------
Address 77: Telephone Labels: 8P0-862-335.lbl
Part No SW: 8P0 862 335 D HW: 8P0 862 335 D
Component: FSE_255x BT H18 0050
Revision: 00000001 Serial number: 00000000184515
Coding: 0001611
Shop #: WSC 06325 000 00000
VCID: 3776DBF14510413332-50E6
No fault code found.
End-------------------------(Elapsed Time: 06:43)--------------------------
Thanks for your support!