VCDS fault code 17772

[AaronGS]

Evening All,

My car is a stage 3+ APR conversion. Its covered 155k miles now. It recently had a thorough engine inspection with not too much found.
Occassionally it surges and feels a bit flat.
Recent diagnostics kept throwing up a B1S1 Lambda fault repeatedly but that stopped as soon as I bought a new sensor (not fitted as the current one is proving rather stubborn to remove!)
The car has had a service recently and 4 new coil packs from VW within the last year but the coil pack wiring loom is cracked in places.

The most recent code is the 17772 code but its intermittant. Should I just clear it and see if it returns or is it likely to point to someting I need to address?

I am also running a little lean, I think. The mult. fuel trims are at about '14' just now. I will pop up a AFR graph below.

Any thoughts/input appreciated!

Aaron

Graph:



Auto-Scan results:

VCDS-Lite Version: Release 1.1
Sunday, 13 May 2012, 17:32:14:30718


Chassis Type: 1J - VW Golf/Bora IV
Scan: 01,02,03,08,15,16,17,19,22,29,35,36,37,39,46,47,55 ,56,57,75,76

-------------------------------------------------------------------------------
Address 01: Engine Labels: 06A-906-032-AUM.LBL
Controller: 06A 906 032 DR
Component: 1.8L R4/5VT G 0003
Coding: 11500
Shop #: WSC 01972
VCID: 7195213928A7
1 Fault Found:
17772 - Cylinder 4 Ignition Circuit: Open Circuit
P1364 - 35-10 - - - Intermittent
Readiness: 0000 1001

-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 1C0-907-37x-ASR.LBL
Controller: 1C0 907 379 D
Component: ASR FRONT MK60 0103
Coding: 0021505
Shop #: WSC 01317
VCID: 2B29F351CA0B
No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags Labels: 6Q0-909-605-VW5.LBL
Controller: 6Q0 909 605 A
Component: 27 AIRBAG VW5 01 0006
Coding: 12855
Shop #: WSC 01317
VCID: 351DD5291C4F
No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments Labels: 1J0-920-xx5-17.LBL
Controller: 1J0 920 925 A
Component: KOMBI+WEGFAHRS. BOO V04
Coding: 05412
Shop #: WSC 00000
VCID: 27210F61D6E3
Ident.-Nr. WEGFAHRS.:VWZ6Z0Y2195952
No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway Labels: 6N0-909-901-19.LBL
Controller: 6N0 909 901
Component: Gateway K<->CAN 0001
Coding: 00006
Shop #: WSC 01317
VCID: F093A43DA3AD
No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv. Labels: 1J0-959-799.LBL
Controller: 1J0 959 799 AH
Component: 4U Zentral-SG Komf. 0001
Coding: 04096
Shop #: WSC 01317
VCID: 847BF8ED8715
No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio Labels: 1J0-035-18x-56.LBL
Controller: 1J0 035 186 E
Component: Radio BNO 0005
Coding: 01403
Shop #: WSC 01317
VCID: 27210F61D6E3
No fault code found.

End

[Jack@European Parts]

Install the over lay repair harness back to ECM and make the grounds to each coil superior.

Do not ignore it.

[AaronGS]

Jack,

Thanks for your reply!
How easy is that to do? Simple DIY territory or a bit more comples wiring when you connect to ECU?
Am I okay to clear the code or leave it be until replaced?

Cheers

Aaron

[Jack@European Parts]

I would repair ASAP.

AGAIN

I wouldn't ignore, or just clear it!

You can do it.
It just takes time and patience.
If its over your scope, take it to a pro maybe a dealer tech in your area.
I'm in NY if your within distance.

Be prepared to pay about 5-6 hours flat rate which is fair for a job like this, plus shop supplies. I really recommend an additional ground cable be run from battery to coils directly.

[AaronGS]

Thanks for the advice mate. There are a few miles of water between us though so may give it a try myself...

Cheers,
Aaron.