Gavin Lewis

My sons car has a misfire on all three cylinders of Bank 2 (drivers side). The CEL flashes pretty constantly after the car warms up, and it intermittently feels like it goes into limp mode. He has no cats, so we aren't worried about destroying those, but it is very frustrating. Have replaced the following.
2.0 coil upgrade, no more ICMs
All O2 sensors replaced
New fuel filter
New fuel pressure regulator, adjustable from ECS, plus a gauge on the fuel line.
New plugs
Did compression test. Bank 2 is slightly lower across the board than Bank 1. 10-15 pounds on all 3 cylinders.
I can post a full scan once he comes home from school with the Vag Com, but hopefully someone can help me before then.


I NEED help, he has my S6 right now because he has to drive 350 miles to school and I don't want him to drive an unreliable car, so the sooner we can get this sorted out, the sooner I can have my car back.


2001 S4 2.7T

Gavin Lewis

Update, I replaced the EGT sensor on that bank yesterday and still missing. At least the CEL is still flashing at me. For the love of god help.

Brian Holwerda

Vag Com yet? boost leak test? I just replaced my camshaft position sensor and that got rid of my light

Gavin Lewis

We do have a Vag Com, and it only registers random misfires on that side. Haven't done a boost leak test, because it's only one side and they have a common throttle body. Worth a shot I guess. I know we replaced the bipipe with an APR cast one to get rid of a boost leak, and have new Forge DV's. It's really baffling.

james 408

try swapping parts. specifically, ICM would be the first one i try.

james 408

o2 sensor would be my next guess. cam position adjuster/sensor or the like i'd only look at if they throw a code.

james 408

or if the adjuster is pissing out oil. you can vagcom test that too since the adjusters are a pita to change (one side you gotta timing belt/pull head).

Gavin Lewis

Replaced the bank 2 cam tensioner, it wasn't advancing, now it is reading exactly the same as bank 1, but still the misfires.
In summation
Have replaced:
Coils with FSI coils, and the upgrade from ECS so no ICMs
Fuel filter, and fuel pressure regulator, fuel pressure is steady at 42#
All plugs
Cam tensioner on bank 2
EGT sensore on bank 2
All 4 O2 sensors
Compression is back to normal, and approximately equal across all 6 cylinders.
Car is throwing no engine codes except the misfires, and occasionally an
Full scan should be getting emailed to me and I'll post it shortly.

Gavin Lewis

Tuesday,27,December,2016,11:24:09:60197
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 16.8.4.2 (x64)
Data version: 20161129 DS267.0
Ross-Tech: Home


VIN: WAURD68D61A073159 License Plate: AVU2151
Mileage: 174562 Repair Order:



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Chassis Type: 8D - Audi A4/S4/RS4 B5 (1995 > 2002)
Scan: 01 02 03 08 15 16 17 25 35 37 45 55 56 57 67 75 76 77

-------------------------------------------------------------------------------
Address 01: Engine Labels: 078-907-551-AZA.lbl
Part No: 8D0 907 551 M
Component: 2.7l V6/5VT G 0002
Coding: 06711
Shop #: WSC 06435
VCID: 346758F004D04AE21D-5140

4 Faults Found:
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-00 -
16688 - Cylinder 4
P0304 - 35-00 - Misfire Detected
16690 - Cylinder 6
P0306 - 35-00 - Misfire Detected
16689 - Cylinder 5
P0305 - 35-00 - Misfire Detected
Readiness: 0000 0001

-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 8D0-907-389.lbl
Part No: 8D0 907 389 E
Component: ABS/ESP allrad D56
Coding: 04295
Shop #: WSC 00000
VCID: 356165F40FAA53EA2A-5140

2 Faults Found:
18265 - Load Signal
P1857 - 35-10 - Error Message from ECU - Intermittent
00301 - ABS Return Flow Pump (V39)
35-00 - -

-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 8D0-820-043-1D.lbl
Part No: 8D0 820 043 P
Component: A4 KLIMAAUTOMAT D58
Coding: 00160
Shop #: WSC 06435
VCID: 2D514D94E7FA1B2A52-2598

1 Fault Found:
00779 - Outside Air Temp Sensor (G17)
30-10 - Open or Short to Plus - Intermittent

-------------------------------------------------------------------------------
Address 15: Airbags Labels: 8D0-959-655-AI8.lbl
Part No: 8D0 959 655 G
Component: Airbag Front+Kopf 1002
Coding: 00304
Shop #: WSC 06435
VCID: 3A7B76C826B4BC92C7-5124

1 Fault Found:
00588 - Airbag Igniter; Driver Side (N95)
32-10 - Resistance Too High - Intermittent

-------------------------------------------------------------------------------
Address 17: Instruments Labels: 8D0-920-xxx-17.lbl
Part No: 8D0 920 981 B
Component: B5-KOMBIINSTR. VDO D12
Coding: 02264
Shop #: WSC 09218
VCID: 2B55438CD9EE151A4C-5140

No fault code found.

-------------------------------------------------------------------------------
Address 35: Centr. Locks Labels: 8D0-862-257.lbl
Part No: 8L0 862 257 N
Component: CV-Pump, Alarm, RC D16
Coding: 16136
Shop #: WSC 06435
VCID: 408F04204068E64289-4ECE

4 Faults Found:
01371 - Alarm triggered by Door Contact Switch; Driver's Side
35-00 - -
01370 - Alarm triggered by Interior Monitoring
35-00 - -
01369 - Alarm triggered by Hood Switch
35-00 - -
00956 - Key 2
09-00 - Adaptation Limit Surpassed

-------------------------------------------------------------------------------
Address 45: Inter. Monitor Labels: 4B0-951-173.lbl
Part No: 4B0 951 173
Component: Innenraumueberw. D03
Coding: 00101
Shop #: WSC 06435
VCID: 60CFE4A0E0A88642A9-4B4C

1 Fault Found:
01382 - Alarm triggered by Anti-Theft Sensor; Front Left
35-00 - -

-------------------------------------------------------------------------------
Address 55: Headlight Range Labels: 4B0-907-357-AUT.lbl
Part No: 4B0 907 357
Component: LEUCHTWEITEREGLER D004
Coding: 00012
Shop #: WSC 06435
VCID: 65C1F5B4FF8AE36A5A-519A

No fault code found.

End-------------------------(Elapsed Time: 04:05)--------------------------

Avantthinking

It almost sounds like a wiring problem. I would suggest unplugging the harness from the ECU and checking for corrosion and plugging everything back in to see if that might correct the issue.