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Author Topic: TFSI badly misfiring, with vcds fault codes  (Read 7065 times)

Offline Mark_eire

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TFSI badly misfiring, with vcds fault codes
« on: January 24, 2014, 11:44:28 pm »
My k04'd vRS Octavia has developed a very bad misfire in the last few days, at first I noticed a slight hesitation, then it became much more noticeable.
I removed the coil packs and plugs, there was oil down some of the coil packs and on some of the plugs, I replaced the rocker cover gasket and also put in some new plugs, this still hasn't solved anything, I also swapped around the coil packs and tried a new one in to see if it made any difference, but it hasn't.
I'm not driving the car at the moment until this is sorted.
Here's a printout of the faults from the scan which hadn't been reset in a few days.



 Address 01: Engine       Labels: 06F-907-115-AXX.lbl
Control Module Part Number: 1Z0 907 115 D    HW: 8P0 907 115 B
  Component and/or Version: 2.0l R4/4V TFSI     0010
           Software Coding: 0203000318070160
            Work Shop Code: WSC 78900 027 419367
7 Faults Found:

009728 - Coolant Pump Control Circuit: Open
               P2600 - 004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 2
                    Fault Frequency: 6
                    Mileage: 227730 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 17:17:03

             Freeze Frame:
                    RPM: 711 /min
                    Load: 23.1 %
                    Speed: 0.0 km/h
                    Temperature: 82.0°C
                    Temperature: 28.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 13.843 V

000768 - Random/Multiple Cylinder Misfire Detected
               P0300 - 001 - Upper Limit Exceeded - MIL ON
             Freeze Frame:
                    Fault Status: 11100001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 227730 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 17:18:12

             Freeze Frame:
                    RPM: 765 /min
                    Load: 20.0 %
                    Speed: 0.0 km/h
                    Temperature: 87.0°C
                    Temperature: 27.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 13.843 V

000772 - Cylinder 4: Misfire Detected
               P0304 - 001 - Upper Limit Exceeded - MIL ON
             Freeze Frame:
                    Fault Status: 11100001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 227730 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 17:18:15

             Freeze Frame:
                    RPM: 728 /min
                    Load: 20.8 %
                    Speed: 0.0 km/h
                    Temperature: 87.0°C
                    Temperature: 27.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 13.843 V

004688 - Fuel Level too Low
               P1250 - 008 - Implausible Signal
             Freeze Frame:
                    Fault Status: 01101000
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 227730 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 17:18:16

             Freeze Frame:
                    RPM: 750 /min
                    Load: 21.2 %
                    Speed: 0.0 km/h
                    Temperature: 87.0°C
                    Temperature: 27.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 13.843 V

000771 - Cylinder 3: Misfire Detected
               P0303 - 001 - Upper Limit Exceeded - Intermittent
             Freeze Frame:
                    Fault Status: 00100001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 227730 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 17:18:39

             Freeze Frame:
                    RPM: 740 /min
                    Load: 25.9 %
                    Speed: 0.0 km/h
                    Temperature: 88.0°C
                    Temperature: 29.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 13.843 V

004506 - Fuel Pressure Sensor (G247): Malfunction
               P119A - 001 - Upper Limit Exceeded
             Freeze Frame:
                    Fault Status: 01100001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 227730 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 17:21:53

             Freeze Frame:
                    RPM: 853 /min
                    Load: 15.3 %
                    Speed: 0.0 km/h
                    Temperature: 89.0°C
                    Temperature: 31.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 13.970 V

000256 - Mass Air Flow Sensor (G70): Supply Voltage
               P0100 - 004 - No Signal/Communication - Intermittent
             Freeze Frame:
                    Fault Status: 00100100
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 227730 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 17:35:08

             Freeze Frame:
                    RPM: 777 /min
                    Load: 22.0 %
                    Speed: 0.0 km/h
                    Temperature: 91.0°C
                    Temperature: 33.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 13.843 V



Would the PCV cause any of these problems or any suggestions?
« Last Edit: January 25, 2014, 12:17:50 pm by Mark_eire »
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Offline xjay1337

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Re: TFSI badly misfiring
« Reply #1 on: January 25, 2014, 12:10:42 am »
Looks like a fuel supply problem from the fault codes?
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Offline nath

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Re: TFSI badly misfiring
« Reply #2 on: January 25, 2014, 09:23:37 am »
Injectors ?  Is it worth trying some injector cleaner ?
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Offline AwesomeHassan

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Re: TFSI badly misfiring
« Reply #3 on: January 25, 2014, 09:34:12 am »
Is the missfire underload?
Is there any missfires at idle?
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Offline Mark_eire

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Re: TFSI badly misfiring
« Reply #4 on: January 25, 2014, 10:54:12 am »
Thanks lads, yeah the car is misfiring at idle
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Offline AwesomeHassan

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Re: TFSI badly misfiring, with vcds fault codes
« Reply #5 on: January 25, 2014, 02:14:29 pm »
It could be many things causing this issue.
Injector, vacuum leak, maf sensor etc

I had a car in couple of weeks ago, same symptoms after checking everything we found there was very little compression on one of the cylinders.
It turned out the piston on that cylinder had a small crack/chip.

That car also had fuel pressure/level, missifre and MAF fault codes

I would carry out a compression test and see how you get on,

« Last Edit: January 25, 2014, 02:16:00 pm by AwesomeHassan »
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Offline Mark_eire

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Re: TFSI badly misfiring, with vcds fault codes
« Reply #6 on: February 08, 2014, 11:21:32 am »
Just to update this for anyone who may experience the same problem, got my car back a few day's ago.
After trying new coil pack's, new plugs, new PCV, replacing the rocker cover gasket as there was a slight amount of oil down one of the coil packs, cleaning the ports on the intake manifold, it was finally diagnosed as a blocked injector.

Fitted a new S3 injector and now running perfect again. I might pick up a set of S3 injector's in case the same thing happens again, the current one's have almost 230k kms up on them, so not bad going!!

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Offline big eck

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Re: TFSI badly misfiring, with vcds fault codes
« Reply #7 on: February 08, 2014, 11:43:26 am »
I had this exact problem a few weeks ago. Changed absolutely everything then got to the injectors. 2 of mine were knackered.
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