Intermittent Misfires & VCDS Scan results

[macgee15]

Hi,

Bought a 2011 Octavia Est 1.6 (VIN TMBHA21Z8B2123738) with 45k miles early Dec 23, and now experiencing intermittent rough running (misfire). First Experienced a sluggish start one cold morning which it seemed to recover from. Couple days later I stalled the car whilst reversing. On restart, the orange 'control system for exhaust' and 'ESP or Traction Control System' warning lights came on together, and the engine started rough running. I switched off and restarted the engine and  the lights remained off and the engine ran smoothly again. Several days later the car failed to start (clicking on turning key) Attempted to charge battery but it would not charge. Turned out battery was the original made in 2011, so replaced with new one. I still experience intermittent rough running and have now bought a VCDS Hex V2. Fault codes as follows. 

 

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: Malfunction 0010
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: Malfunction 0010
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
56-Radio -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000

 

Address 01: Engine (BSE)       Labels: 06A-906-033-BGU.lbl
   Part No SW: 06A 906 033 NT    HW: 06A 906 033 MP
   Component:  BSE S71 1.6 2V     8459  
   Revision: --H01---    Serial number:               
   Coding: 0044071
   Shop #: WSC 73430 790 00083
   VCID: 7EA5F289CCF0D31B99E-802A
   VINID: 91D49844206A2120810831C3206629214B

5 Faults Found:
17756 - Ignition Coil Power Output Stage 1 
            P1348 - 000 - Open Circuit - Intermittent
             Freeze Frame:
                    RPM: 2304 /min
                    Mass Air / Rev.: 397.9 mg/str
                    Lambda Factor: 0.984
                    Temperature: 58.5°C
                    Bin. Bits: 00001000
                    T.B. Angle: 24.9°

16685 - Cylinder 1 
            P0301 - 000 - Misfire Detected - Intermittent
             Freeze Frame:
                    RPM: 3008 /min
                    Mass Air / Rev.: 223.5 mg/str
                    Temperature: 60.0°C
                    Lambda: 0.0 %
                         2
                    (no units): 146.0

16688 - Cylinder 4 
            P0304 - 000 - Misfire Detected - Intermittent
             Freeze Frame:
                    RPM: 3008 /min
                    Mass Air / Rev.: 223.5 mg/str
                    Temperature: 60.0°C
                    Lambda: 0.0 %
                         2
                    (no units): 146.0

16684 - Random/Multiple Cylinder Misfire Detected 
            P0300 - 000 -  - Intermittent
             Freeze Frame:
                    RPM: 3008 /min
                    Mass Air / Rev.: 223.5 mg/str
                    (no units): 255.0
                    (no units): 146.0
                    Lambda Factor: 1.156
                    T.B. Angle: 14.1°

17620 - Cylinder Shut-Off; Bank 1 
            P1212 - 000 - 
             Freeze Frame:
                    RPM: 3040 /min
                    Mass Air / Rev.: 218.0 mg/str
                    Temperature: 60.0°C
                    Lambda: 0.0 %
                    (no units): 255.0
                    (no units): 146.0

Readiness: 0010 1001

 

Address 03: ABS Brakes        Labels:. 1K0-907-379-MK70M.clb
   Part No SW: 1K0 907 379 AK    HW: 1K0 907 379 AK
   Component: MK70 M MASR         0105  
   Revision: 00H35001    
   Coding: 0017665
   Shop #: WSC 73430 790 00083
   VCID: 7BA3FB9DDFE2C633BE0-802E

1 Fault Found:
01314 - Engine Control Module 
            013 - Check DTC Memory
 

 

In addition VCDS also reported three faults with alarm and third brake light which are less vital at the moment. Looking at the engine faults, I am thinking that I need to replace spark plugs and possibly coil packs. How do i know which cylinder is no 1 and which is number 4? Does anyone have any other suggestions as to where I look to resolve these issues? I was hoping to pick up a Haynes manual but of course there doesn't seem to be a printed version for my car. Any suggestions regarding the ABS fault?

 

Anyone able to shed any light? 

[macgee15]

Hello again. Bought plugs and coil pack but not been able to fit them yet. Now my red engine coolant pressure light in com8ng on intermittently. Never had a car go like this before. 

[varooom]

Two things, battery can be a main culprit (and it was changed I see)

Did you adapt the new battery, and match the technology to the car?

 

Also can you post a full car scan, as some are marked as with error, but not seen.

Attach as text, or put inside a  < >  Code tag to keep the formatting easier to read.

[macgee15]

Hi @varooom, thanks for the reply. I will try the battery coding today and report back. I did  not include the other section of the faults listed as they do not obviously relate to the issues experienced (one is high level 3rd brake light issue the other two are related to alarm horn), but can add those today for completion. 

[macgee15]

@varooom just had a look at VCDS on my car, trying to follow the battery coding info. I do not have 10 Adaption listed when I go into the 19 Canbus option, and can see no obvious way to code for battery change.. 

[macgee15]

@varooom full scan attached

Scan-TMBHA21Z8B2123738-20230207-2221-73690km-45788mi.txt

[varooom]

If you don't have stop/start the adapting the battery is not really relevant at all, hence why you might be missing the entries for battery.

 

Did you get around to fitting the plug(s) coil pack(s) yet?

As this is your main culprit that spawns the additional errors in engine control module.

 

As for your maintenance, they are every 4 years or 40,000 miles (60,000km to be precise, but they allow 40k miles) replacement plugs, so due at some point this year a full set.  2015 -> 2019 -> 2023 as you do low mileage.

 

To determine which cylinder if you only brought single plug/coil pack, unplug connector and scan car, it will soon tell you which one is unplugged, and you can determine Cyl 1-4.

[macgee15]

@varooomMy car does not have the stop/start technology in it. Not had chance to fit parts yet as weather been iffy and health variable at the moment. I have bought four plugs and a coil pack which covers all four spark plugs. It is a square pack rather than one which slots down atop the spark plug. Waiting on new leads as if I am taking the front part off the engine to do the plugs and coil pack, I might as well replace those whilst it is off. The car is definitely due a service as it had the service light on when I bought it. Will also be getting air and fuel filters when I collect the leads, and will work out best engine oil for it. 

[varooom]

Best of luck on that, when weather and health permits.