Octavia Mk2 01314 VAG Code

[tomo4441]

Good evening team, I'm reaching the end of my patience with trying to work out the issues with my 1.6 FSI MK2 Octavia 2008

 

I recently had the engine cut out on me with a camshaft/crankshaft sensor issue, however this appears resolves and now I am greeted with this 01314 ECM code. 

 

Basically the car will crank but will not start. I've got this code in every category on my scanner and it keeps coming back after clearing. I've charged/changed battery - no luck. Checked fuses - no luck. I've checked the 100 relay in the engine bay - no luck, all working as expected. 

 

I'm next thinking checking the other relays but I can not find any diagram of relay locations or what each relay is for. 

 

Is anyone able to help?

 

Below is my vehicle scan results as of tonight...

 

ECU info obtained with Carista 3.9.4 for Android:

Engine
[ECU not present]

ABS
Part #: 1K0907379AF
Coding: 16641 (decimal)
Component: MABS MK7
Fault codes:
01314 Engine Control Module (ECM)

Steering angle
[ECU not present]

Power steering
Part #: 1K0909144C
Coding: [none]
Component: EPS_ZFLS Kl. 67
Fault codes:
00778 Steering Angle Sensor (G85)
01314 Engine Control Module (ECM)

Airbags
Part #: 1K0909605T
Coding: 20788 (decimal)
Component: Q4 AIRBAG VW8
[No fault codes]

Instrument cluster
Part #: 1Z0920912B
Coding: 3401 (decimal)
Component: KOMBIINSTRUMENT
Fault codes:
01314 Engine Control Module (ECM)

Immobilizer
Part #: 1Z0920912B
Coding: [none]
Component: IMMO
[No fault codes]

Central electronics
Part #: 3C8937049D
Coding: 008C0F030004140043110D000000000000087B075C000000000000000000 (hex)
Component: Bordnetz-SG
Fault codes:
01314 Engine Control Module (ECM)
00526 Brake Light Switch (F)

Body/convenience system
Part #: 1K0959433BT
Coding: 81801A085283007F3F04850540085F96907CA0 (hex)
Component: KSG PQ35 G2
[No fault codes]

Driver's door
Part #: 1T0959701H
Coding: 756 (decimal)
Component: Tuer-SG
[No fault codes]

Front passenger's door
Part #: 1T0959702H
Coding: 756 (decimal)
Component: Tuer-SG
[No fault codes]

Rear left door
Part #: 1K0959703J
Coding: 144 (decimal)
Component: Tuer-SG
[No fault codes]

Rear right door
Part #: 1K0959704J
Coding: 144 (decimal)
Component: Tuer-SG
[No fault codes]

Steering wheel
Part #: 1K0953549CA
Coding: 12 (decimal)
Component: J0527
[No fault codes]

Heater & air conditioning
Part #: 1Z0820047K
Coding: [none]
Component: Climatic PQ35
Fault codes:
00229 Refrigerant Pressure (K189)
01314 Engine Control Module (ECM)

Radio
Part #: 1Z0035161C
Coding: 402 (decimal)
Component: Radio FO3
[No fault codes]

CAN network gateway
Part #: 1K0907530Q
Coding: E9807F060002021303 (hex)
Component: J533__Gateway
Fault codes:
01314 Engine Control Module (ECM)

 

ABS:
01314 - Engine Control Module (ECM)

Power steering:
00778 - Steering Angle Sensor (G85)
01314 - Engine Control Module (ECM)

Instrument cluster:
01314 - Engine Control Module (ECM)

Central electronics:
01314 - Engine Control Module (ECM)
00526 - Brake Light Switch (F)

Heater & air conditioning:
00229 - Refrigerant Pressure (K189)
01314 - Engine Control Module (ECM)

CAN network gateway:
01314 - Engine Control Module (ECM)

[langers2k]

Looks like nothing can communicate with the engine ECU. If the ECU has been out, I'd start by checking its connector.

 

If there are no clues there, get the wiring diagram and start by confirming the power, ground and CAN wiring to the ECU are good. If you haven't got a wiring diagram, you can get them from Skoda for a small fee: https://erwin.skoda-auto.cz/erwin/showHome.do

[tomo4441]

Good evening Langers,

 

Thank you for the reply. 

 

The ECU has not been out yet - that is my next attempt. Take it out, give it a clean and return.

 

Thoughts that this is a relay problem as a lot of videos/posts of other vehicles detail this?

 

 

[langers2k]

Assuming the ECU is powered from a relay then yes, a faulty one could cause issues.

 

Hard to confirm without a wiring diagram to see which, if any, would be the cause.

 

Any chance something hasn't been reconnected since the engine was out?

[tomo4441]

Understood. Finding a diagram for relay locations and what they are for is fruitless.

 

Afraid not as the engine hasn't been removed. The engine started the night before, however the next day this code appeared...

 

 

[nige8021]

Assuming your engine code is BLF ? then there is a main power relay in the "E"box under the bonnet it's in the centre of the box by a torx mounting screw 

[tomo4441]

Hi Nige, already checked that relay and switch and resistance working as expected. 

 

I think it could be a relay for the ECM but don't have a clue where that is or what number it is

[tomo4441]

Afternoon team,

 

An update on what I've done and the results.

 

I got to the ECM and disconnected it. Cleaned the connectors and reattached - same codes appear after clearing. - I was not able to get into the ECM case - its comepletly glued shut and appears like nothing can get in/out.

 

I got under my dash into the other relay's. I tested them all - the same way I tested my 100 relay in my engine compartment fuse box. The only difference is when testing with a 12v battery, some of the relays seem to switch on and off a lot. I swapped some around and tried clearing the codes - they reappear. However  I have somehow managed to start the car a number of times now, however the engine cuts out after 15odd seconds of running...

 

Any ideas? 

 

Thanks

[langers2k]

If it starting, that suggests the ECU has power/ground and CAN. Is it showing up in carista yet?

[tomo4441]

I agree, however it cuts out. In carista the same error is appearing as usual

[pikpilot]

Engine cutting out after 15 secs from starting was a symptom on the Mk1 of the immobiliser code not being recognised.

Typically the chip in the key fob is damaged and not recognised or the code reader coil around the ignition switch is faulty. The ECU allows the engine to start but only run for 15 seconds before stopped.

Do the key fobs work correctly or are you using the key blade to open the door?

 

May not be exactly the same cause in your case but may lead to exploring other possibilities, such as Can Bus wiring.

 

 

Edited 7 September, 2019 by pikpilot
Typo fixed

[nige8021]

13 hours ago, tomo4441 said:

I think it could be a relay for the ECM but don't have a clue where that is or what number it is

 

From the wiring diagrams that is the power relay for the ECU

[tomo4441]

19 hours ago, nige8021 said:

 

From the wiring diagrams that is the power relay for the ECU

 What relay is that, and where is it located? Unfortunately I don't have a diagram.

 

It's not the key i've tried both and get the same result. 

 

It's odd, I can get the car started now and then, however it is now running for around 30seconds and then just cuts out...

[nige8021]

1 hour ago, tomo4441 said:

 What relay is that, and where is it located? Unfortunately I don't have a diagram.

 

 

The relay in the centre of the "E" box

[tomo4441]

Ah yes. I've fairly happy the ecu is getting power. After playing around with the relays under the dash I've got it started but only intermittently. I need to find out what those relays are and test connection between the ecu and its wires somehow...

[tomo4441]

Evening gents, went to Germany on the bike for a bit of a holiday and forgot all about it.

 

Gave it another go today, again managed to start but only runs for 30 seconds or so then cuts out.

 

The code is still there.

 

Attached is my fuse box, nothing of notice wrong ?

 

Cheers

 

Alex