MK5 Golf GTI

All Things Mk5 => Modifications & Technical Area => Technical Workshop => Topic started by: Mark_eire on January 24, 2014, 11:44:28 pm

Title: TFSI badly misfiring, with vcds fault codes
Post by: Mark_eire 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?
Title: Re: TFSI badly misfiring
Post by: xjay1337 on January 25, 2014, 12:10:42 am: Looks like a fuel supply problem from the fault codes?
Title: Re: TFSI badly misfiring
Post by: nath on January 25, 2014, 09:23:37 am: Injectors ? Is it worth trying some injector cleaner ?
Title: Re: TFSI badly misfiring
Post by: AwesomeHassan on January 25, 2014, 09:34:12 am: Is the missfire underload?
Is there any missfires at idle?
Title: Re: TFSI badly misfiring
Post by: Mark_eire on January 25, 2014, 10:54:12 am: Thanks lads, yeah the car is misfiring at idle
Title: Re: TFSI badly misfiring, with vcds fault codes
Post by: AwesomeHassan 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,
Title: Re: TFSI badly misfiring, with vcds fault codes
Post by: Mark_eire 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!!
Title: Re: TFSI badly misfiring, with vcds fault codes
Post by: big eck 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.