Did a scan on my car today (hehe now I've got a VCDS lead I'm scanning everything in sight lol)

Got these faults

Address 46: Central Conv. Labels: 1C0-959-799.lbl

Part No: 1C0 959 799 B

Component: 3Y Komfortgerát HLO 0003

Coding: 00259

Shop #: WSC 31480

VCID: 367E2A48125C5D4

Subsystem 1 - Part No: 1U6959802D

Component: 3Y Tõrsteuer.FS KLO 0202

Subsystem 2 - Part No: 1U6959801D

Component: 3Y Tõrsteuer.BF KLO 0009

Subsystem 3 - Part No: 1U0959811D

Component: 3Y Tõrsteuer.HL KLO 0202

Subsystem 4 - Part No: 1U0959812D

Component: 3Y Tõrsteuer.HR KLO 0202

1 Fault Found:

01336 - Data Bus for Comfort System

80-00 - Single-Wire Operation

-------------------------------------------------------------------------------

Address 56: Radio Labels: 1J0-035-18x-56.lbl

Part No: 1U0 035 161 D

Component: Radio GRO 0001

Coding: 00407

Shop #: WSC 31480

VCID: 2A460E38D6E4094

1 Fault Found:

01336 - Data Bus for Comfort System

80-00 - Single-Wire Operation

What does this "Single wire operation" mean? Everything is working fine as far as I know?

Open up the Ross-Tech wiki copy the DTC No. (01336 in this case) and paste it in the 'search' (top R/H side of page)

Click on 'GO'

This will bring up:

Page title matches

• 01336 == 01336 - Data Bus for Comfort System == === 01336 - Data Bus for Comfort System: Faulty === 1 KB (135 words) - 09:42, 25 March 2007

Click on the highlighted DTC No. and you will get:

01336 - Data Bus for Comfort System

01336 - Data Bus for Comfort System: Faulty

Possible Causes

• CAN-Data Bus faulty
• Wiring/Connectors from/to Control Modules
• Control Module in CAN Data Bus Comfort faulty

Possible Solutions

• Check CAN-Gateway Coding
• Check Measuring Value Blocks (MVB)
• Check Wiring/Connectors from/to Control Modules

01336 - Data Bus for Comfort System: Single-Wire Operation

Possible Symptoms

• Data Bus Comfort working in Single-Wire Mode

Possible Causes

• Wiring/Connectors from/to Control Modules
• Control Module in CAN Data Bus Comfort faulty

Possible Solutions

• Check Measuring Value Blocks (MVB)
• Check Wiring/Connectors from/to Control Modules

<a name="Special_Notes" id="Special_Notes">

Special Notes

• When found in VW Passat (3B): Comfort System, check Comfort Control Module and Door Control Modules.
  • Wiring/Connectors from/to Door Control Modules faulty
  • Door Control Modules faulty
  • Comfort Control Modules flooded/faulty

HTH

Hi Gizmo,

Yes, I found that information on the Wiki, but I was hoping for a more, erm, simple explanation. Is it something I need to worry about, or indeed do anything about?

cheers,

Martin

...What does this "Single wire operation" mean?...

The bus is a balanced, twisted pair of wires. If one wire is broken, the system is configured to use a single wire, referenced against earth. Single wire operation is much more prone to interference.

The bus is a balanced, twisted pair of wires. If one wire is broken, the system is configured to use a single wire, referenced against earth. Single wire operation is much more prone to interference.

Is it possible to trace this and fix it without stripping the car to bits?

Is it possible to trace this and fix it without stripping the car to bits?

It is only affecting the comfort bus. The problem with this fault, is that it could be either a wiring problem or a faulty module on the bus such as a door module. Corroded contacts can also cause this problem.

Sometimes the CCU can get confused. In these cases, disconnecting the battery for 10 minutes will do the trick.

It is only affecting the comfort bus. The problem with this fault, is that it could be either a wiring problem or a faulty module on the bus such as a door module. Corroded contacts can also cause this problem.

Sometimes the CCU can get confused. In these cases, disconnecting the battery for 10 minutes will do the trick.

thanks