2011 Audi A4 2.0 TFSI; #3 Cylinder Misfire Issues

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JohnyB1978

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Hello all...this is my first post and need help to get my sons audi back on the road.

I was recently driving his A4 when I noticed loss of power and extreme vibration. The CEL came on and was blinking. I also noticed the EPC light come on. I quickly returned home and used my cheap code reader to find a fault. It showed P0303 (cylinder 3 misfire). Here is what I did:

- Swapped plugs 3 and 1 to see if problem would move...did nothing. Still had #3 cylinder misfire.
- Replaced with new plugs and ignition coils...zero improvement.
- Replaced all 4 fuel injectors...zero improvement.
- Thoroughly cleaned carbon of all valves...even tried a sea-foam treatment...zero improvement.
- Replaced intake manifold with upgraded manifold...zero improvement.

So I finally broke down and bought a VCDS cable. I ran the autoscan and then cleared all codes hoping one of the repairs I made would correct itself after codes were erased. I started car and almost immediately the CEL came on blinking and car still idled with an extreme stutter.

I don't know where to go from here besides taking it to the dreaded dealership. Hopefully someone can help! Thank you!

Code:
Monday,10,August,2020,20:37:47:48309
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x64
VCDS Version: 20.4.2.0 (x64)  HEX-V2 CB: 0.4513.4
Data version: 20200730 DS317.0
[url]www.Ross-Tech.com[/url]


VIN: WAUFFAFL9BN051886   License Plate: 


Chassis Type: FL-AU48 (8T0)
Scan: 01 02 03 05 08 09 15 16 17 19 2E 42 46 47 52 53 55 56 62 72
          77

VIN: WAUFFAFL9BN051886   Mileage: 150130km-93286miles

01-Engine -- Status: Malfunction 0010
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
2E-Media Player 3 -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
47-Sound System -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
56-Radio -- Status: Malfunction 0010
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
77-Telephone -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (0-----CAEB)       Labels:| 06H-907-115-CAB.clb
   Part No SW: 8K2 907 115 AG    HW: 8K2 907 115 D
   Component: 2.0l R4/4V TF H19 0002  
   Revision: E1H19---    
   Coding: 0104010A290F0160
   Shop #: WSC 47993 001 1048576
   ASAM Dataset: EV_ECM20TFS0118K2907115AG 001002
   ROD: EV_ECM20TFS0118K2907115AG.rod
   VCID: 74B1D8EE0E30E4FB46B-8020

3 Faults Found:
4060 - Cylinder 3 
          P0303 00 [101] - Misfire Detected
          Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 150138 km
                    Date: 2020.08.09
                    Time: 07:34:00

                    Engine speed: 1160.00 /min
                    Normed load value: 24.7 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 22 °C
                    Intake air temperature: 26 °C
                    Ambient air pressure: 810 mbar
                    Voltage terminal 30: 12.863 V
                    Unlearning counter according OBD: 80

7960 - Cylinder Disabling 
          P130A 00 [036] - -
          Intermittent - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 150138 km
                    Date: 2020.08.09
                    Time: 07:34:40

                    Engine speed: 1155.50 /min
                    Normed load value: 25.1 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 33 °C
                    Intake air temperature: 26 °C
                    Ambient air pressure: 810 mbar
                    Voltage terminal 30: 13.428 V
                    Unlearning counter according OBD: 40

4051 - Random/Multiple Cylinder Misfire Detected 
          P0300 00 [101] - -
          Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 150138 km
                    Date: 2020.08.09
                    Time: 07:33:55

                    Engine speed: 1195.00 /min
                    Normed load value: 26.3 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 22 °C
                    Intake air temperature: 27 °C
                    Ambient air pressure: 810 mbar
                    Voltage terminal 30: 12.415 V
                    Unlearning counter according OBD: 80

Readiness: 1110 0101

-------------------------------------------------------------------------------
Address 02: Auto Trans (J217)       Labels:| 0BK-927-156.clb
   Part No SW: 8K0 927 158 S    HW: 0BK 927 156 R
   Component: 0BK 20TFSIUSA H08 1003  
   Revision: --H08---    
   Coding: 000002
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_TCMAL551211 002018
   ROD: EV_TCMAL551211_002_AU48.rod
   VCID: 46D55226282C266B28F-8012

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 8K0-907-379-V1.clb
   Part No SW: 8K0 907 379 BJ    HW: 8K0 907 379 BJ
   Component: ESP8 quattro  H04 0060  
   Revision: --------    Serial number: --------------
   Coding: 1D0D18
   Shop #: WSC 02391 823 56573
   VCID: 025D8E364404DA4B447-8056

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J393)       Labels:. 8K0-907-064-05.clb
   Part No SW: 8K0 907 064 CF    HW: 8K0 907 064 CF
   Component: BCM2 2.0      H05 0435  
   Revision: 00002001    
   Coding: 090100
   Shop #: WSC 02399 823 56573
   VCID: 76B5E2E618CCF6EB78F-8022

   Subsystem 1 - Part No SW: 8T0 959 754 A    HW: 8T0 959 754 A
   Component: FBSAUDIB8 IDG  H60 0072 
   Serial number: 0511000016320009    

   Subsystem 2 - Part No SW: 8K0 905 852 D    HW: 8K0 905 852 D
   Component: J764 ELV MLB  H37 0042 
   Serial number: 2311000054431003    

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels:. 8Tx-820-043-3Z.clb
   Part No SW: 8T1 820 043 AQ    HW: 8T1 820 043 AQ
   Component: KLIMA 3 ZONEN H08 0180  
   Revision: C1000000    Serial number: 01270320110632
   Coding: 64002000
   Shop #: WSC 02391 823 56573
   VCID: 0059843E4A08C85B523-8054

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 8K0-907-063.clb
   Part No SW: 8K0 907 063 P    HW: 8K0 907 063 P
   Component: BCM1 1.0      H30 0392  
   Revision: 10030001    Serial number: 00000001006250
   Coding: 26001091063CAF010000080300003D0D0F1C520802010161000000
   Shop #: WSC 02391 823 56573
   VCID: 3C2130CE66606CBB4EB-8068

   Subsystem 1 - Part No SW: 8K1 955 119 A    HW: 8T1 955 119   Labels: 1KX-955-119.CLB
   Component: WWS 010411  H07 0070 
   Serial number: SWF11040010084      
   Coding: 00FD11

   Subsystem 2 - Part No SW: 8K0 955 559     HW: 8K0 955 559   Labels: 8K0-955-559.CLB
   Component: RLS  H04 0003 
   Serial number: 11358333            
   Coding: 025028

   Subsystem 3 - Part No SW: 8K0 941 531 AS    HW: 8K0 941 531 AS
   Component: E1 - LDS  H03 0031 
   Serial number: 00000000001903111169

   Subsystem 4 - Part No SW: 8K0 907 410 C    HW: 8K0 907 410 C
   Component: HOMELINK  H01 0010 

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 8K0-959-655.clb
   Part No SW: 8K0 959 655 K    HW: 8K0 959 655 K
   Component: AirbagVW-AU10 H44 0610  
   Serial number: 003GLD0NCDHW  
   Coding: 303837354230303030304A55304C384B3053
   Shop #: WSC 02135 785 00200
   ASAM Dataset: EV_AirbaECUVWAUDI010 003010
   ROD: EV_AirbaECUVWAUDI010_003_AU48.rod
   VCID: 45D7552A152A2D73215-8010

   Seat occupied recognition: 
   Subsystem 1 - Part No SW: 8K0 959 339 C    HW: 8K0 959 339 C
   Component: BF-Gewichtss.  H02 0040 
   Serial number: 5810000R1100002W60

   Crash sensor for side airbag: driver side: 
   Serial number: 6334MSME5D550165D

   Crash sensor for side airbag: front passenger side: 
   Serial number: 6344MSME5D550E3EX

   Crash sensor for side airbag: rear: driver side: 
   Serial number: 6352QSME150A2B58J

   Crash sensor for side airbag: rear: passenger side: 
   Serial number: 6362QSME6B044956N

   Crash sensor for front airbag: driver side: 
   Serial number: 63732SME4E042E600

   Crash sensor for front airbag: front passenger side: 
   Serial number: 63832SME34014376S

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:. 8K0-953-568.clb
   Part No SW: 8K0 953 568 F    HW: 8K0 953 568 F
   Component: Lenks.Modul   H17 0014  
   Revision: --------    Serial number: 90372KCO000WP 
   Coding: 000016
   Shop #: WSC 02391 823 56573
   VCID: 3D273DCA7D7A65B3795-8068

   Component: E221 - MFL  H02 0010 

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:. 8T0-920-xxx-17.clb
   Part No SW: 8K0 920 950 H    HW: 8K0 920 950 H
   Component: KOMBIINSTR.   H20 0258  
   Revision: 00200000    Serial number: EIL20NP3C     
   Coding: 8B1609000300D705020000
   Shop #: WSC 02391 823 56573
   VCID: 343118EE4E30A4FB86B-8060

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 8T0-907-468.clb
   Part No SW: 8T0 907 468 AB    HW: 8T0 907 468 H
   Component: GW-BEM 5CAN   H06 0117  
   Revision: GB800053    Serial number: 5300G1132481A0
   Coding: 00C303
   Shop #: WSC 02391 823 56573
   VCID: 015F813A4102C1535DD-8054

   Subsystem 1 - Part No SW: 8K0 915 181 E    HW: 8K0 915 181 E
   Component: J367-BDM  H07 0170 
   Serial number: 11013A7E240311      

No fault code found.

-------------------------------------------------------------------------------
Address 2E: Media Player 3 (R199)       Labels:. 8T0-035-785.clb
   Part No SW: 8T0 035 785 A    HW: 8T0 035 785 
   Component: SG ext.Player H08 0290  
   Revision: 00000000    
   Coding: 020302
   Shop #: WSC 02391 823 56573
   VCID: 392F29DA6952599355D-806C

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:. 8K0-959-793.clb
   Part No SW: 8T0 959 793 M    HW: 8T0 959 793 D
   Component: TSG FA        H08 1501  
   Revision: --------    Serial number: --------------
   Coding: 011C03204000410001
   Shop #: WSC 02391 823 56573
   VCID: 53F37B72EBFE83C3BF1-8006

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv. (J393)       Labels:. 8K0-907-064-46.clb
   Part No SW: 8K0 907 064 CF    HW: 8K0 907 064 CF
   Component: BCM2 2.0      H05 0435  
   Revision: 00002001    Serial number: 0146751372    
   Coding: 0106023A00FA440480B0013200000000
   Shop #: WSC 02391 823 56573
   VCID: 76B5E2E618CCF6EB78F-8022

   Subsystem 1 - Part No SW: 8K0 959 719 B    HW: 8K0 959 719 
   Component: GTO BF  H01 0070 
   Serial number: 00000000000000379413

   Subsystem 2 - Part No: 1K0 951 605 C
   Component: LIN BACKUP HO  H05 1501 

   Subsystem 3 - Part No SW: 8K0 959 591 A    HW: 8K0 959 591 
   Component: J245 PS045  H07 0041 

No fault code found.

-------------------------------------------------------------------------------
Address 47: Sound System (J525)       Labels:. 8T0-035-223-ASC.clb
   Part No SW: 8T0 035 223 AH    HW: 8T0 035 223 
   Component: DSP STD       H07 0230  
   Revision: S2300000    
   Coding: 0203010102
   Shop #: WSC 02391 823 56573
   VCID: 74B1D8EE0EB0E4FB46B-8020

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:. 8K0-959-792.clb
   Part No SW: 8T0 959 792 M    HW: 8T0 959 792 D
   Component: TSG BF        H08 1501  
   Revision: --------    Serial number: --------------
   Coding: 011C03204000410001
   Shop #: WSC 02391 823 56573
   VCID: 52FD7E76D4E48ACBB47-8006

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake (J540)       Labels: 8K0-907-801-V1.clb
   Part No SW: 8K0 907 801 H    HW: 8K0 907 801 H
   Component: EPB Audi B8   H09 0100  
   Revision: 00000003    Serial number: 00000000904372
   Shop #: WSC 00000 000 00000
   VCID: 343118EE4E30A4FB86B-8060

No fault code found.

-------------------------------------------------------------------------------
Address 55: Headlight Range        Labels: 8K0-907-357.clb
   Part No: 8K5 907 357 B
   Component: Dynamische LWR  H02 0010  
   Revision: 00000001    Serial number:               
   Coding: 0000004
   Shop #: WSC 02145 785 00200
   VCID: 392F29DA6552599355D-806C

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio (J503)       Labels:. 8Tx-035-1xx-56.clb
   Part No SW: 8T1 035 186 R    HW: 8T1 035 186 R
   Component: Con3 Sirius   H06 0351  
   Revision: 00000009    Serial number: AUZ5Z6K1567420
   Coding: 04020002010185004359070800
   Shop #: WSC 02391 823 56573
   VCID: 46D5522628AC266B28F-8012

   Subsystem 1 - Part No SW: 8T0 919 603 F    HW: 8T0 919 603 F
   Component: Display  

1 Fault Found:
02635 - Tuner Not Enabled/Activated 
            000 - -
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 7
                    Fault Frequency: 1
                    Reset counter: 222
                    Mileage: 150138 km
                    Time Indication: 0
                    Date: 2020.08.09
                    Time: 07:29:44


-------------------------------------------------------------------------------
Address 62: Door, Rear Left (J388)       Labels:. 8K0-959-795.clb
   Part No SW: 8T0 959 795 N    HW: 8T0 959 795 B
   Component: TSG HL        H06 1501  
   Revision: --------    Serial number: --------------
   Coding: 010C03204000210001
   Shop #: WSC 02391 823 56573
   VCID: 56F58266F80C96EB58F-8002

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right (J389)       Labels:. 8K0-959-794.clb
   Part No SW: 8T0 959 795 N    HW: 8T0 959 795 B
   Component: TSG HR        H06 1501  
   Revision: --------    Serial number: --------------
   Coding: 010C03204000210001
   Shop #: WSC 02391 823 56573
   VCID: 56F58266F80C96EB58F-8002

No fault code found.

-------------------------------------------------------------------------------
Address 77: Telephone        Labels: 8P0-862-335.lbl
   Part No SW: 8T0 862 336 E    HW: 8T0 862 336 E
   Component: FSE_256x BT     H42 0650  
   Revision: 00000000    Serial number: 00000005114295
   Coding: 0010370
   Shop #: WSC 02335 785 00200
   VCID: 3D273DCA717A65B3795-8068

No fault code found.

End----(Elapsed Time: 01:42, VBatt start/end: 12.0V/11.9V. VIgn 11.9V)-----
 
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   #2  

HMC

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Hi Johnyb1978,
Your next step is a compression test or better still a cylinder leakage test.
Regards HMC
 
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   #3  

Uwe

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Your next step is a compression test or better still a cylinder leakage test.
TBH, I would have gotten that done that before replacing some of the more expensive components.

-Uwe-
 
   #4  

TFSI

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Johny,
Did you check if cylinder 3 coil is receiving the activation signal from ECM?
 
   #5  

Jef

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Address 01: Engine (0-----CAEB) Labels:| 06H-907-115-CAB.clb
Part No SW: 8K2 907 115 AG HW: 8K2 907 115 D
Component: 2.0l R4/4V TF H19 0002
Revision: E1H19---
Coding: 0104010A290F0160


3 Faults Found:
4060 - Cylinder 3
P0303 00 [101] - Misfire Detected
Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Coolant temperature: 22 °C

7960 - Cylinder Disabling
P130A 00 [036] - -
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Coolant temperature: 33 °C

4051 - Random/Multiple Cylinder Misfire Detected
P0300 00 [101] - -
Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Coolant temperature: 22 °C
Cold engine misfires, this can be a sign of carbon build up on the valves. A bit of a primer on this topic: https://youtu.be/RnhUJsZXzmg
 
   #6  

JohnyB1978

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Johny,
Did you check if cylinder 3 coil is receiving the activation signal from ECM?

Can you please explain how to do that? Thank you!
 
   #7  

JohnyB1978

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Hi Johnyb1978,
Your next step is a compression test or better still a cylinder leakage test.
Regards HMC
HMC, thanks for your reply. Just completed a compression test and this is what I found:

#1 Cyl- 130
#2 Cyl- 130
#3 Cyl- 25
#4 Cly- 130

So I suspect an exhaust valve...any other ideas?
 
   #8  

JohnyB1978

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TBH, I would have gotten that done that before replacing some of the more expensive components.

-Uwe-
You are correct kind Sir! My dumbass totally skipped the compression test by throwing parts at it hoping for a quick fix.
 
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   #9  

PetrolDave

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HMC, thanks for your reply. Just completed a compression test and this is what I found:

#1 Cyl- 130
#2 Cyl- 130
#3 Cyl- 25
#4 Cly- 130

So I suspect an exhaust valve...any other ideas?
Low compression can also be caused by an inlet valve not closing fully - possibly because of carbon build-up?
 
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   #10  

Uwe

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Well, that compression test certainly does explain why cylinder #3 has a misfire!

Time for a bore-scope camera to have a look at the valves?

Alternative: There should be an adapter available that screws in place of the spark plug that allows you to introduce air from a compressor into the cylinder. This should then give you some idea where the air is escaping. Make sure you have a pressure regulator in the air line and start with low pressure. Too high a pressure produce unwanted rotation of the engine internals.

-Uwe-
 
   #11  

Fred's Imports

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Burnt valve, I see this occasionally always with VAG TSFI oil burners. Once the oil ash gets on the valve face the heat can no longer be transferred to the valve seat, thus your burnt valve face. I teardown and replace pistons and usually a reman head from VAG because the valve guides are not serviceable on these engines any longer.

New piston part numbers have slightly better oil control. If you're serious about fixing I can post part numbers, the newest number requires a new style connecting rod with larger wristpin diameter that gets expensive.

Also there is updated ECM programming for oil consumption. I have had many of these engines apart and will tell you from experience most cold misfires on VAG vehicles are due to injector issues not carbon buildup on the valves. Obviously we replace injectors and valve cleaning at the same time.

Anytime I see cold misfires in the freeze frame I throw a can of Liqui-Moly LM 2007 in the gas tank then follow up with a second can, the stuff is amazing.
 
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