Intermittant Electrical Problemns - Fault Codes now read

[eltax90]

Hi folks

I posted about the wife's Audi A3 TDi having funny electrical issue all over the place. Symptoms are the Radio keeps going into "Safe" mode, and the electric one-touch windows are playing up. There is a "whirring" noise intermittantly when at idle in traffic (i've not heard it yet), this noise goes away when you rev, or when you use the electric window buttons. I suspect a didgy alternator, i've listed the fault codes below, does anyone have any other thoughts before i take it to a dealer to get bent over?

Codes:-

VAG-COM Version: Release 303.1

Chassis Type: 8L - Audi A3/S3

Scan: 01,02,03,08,15,17,22,35,37,45,54,55,56

Address 01 -------------------------------------------------------

Controller: 038 906 019 DE

Component: 0000SG 1553

Coding: 00002

Shop #: WSC 06435

WAUZZZ8L13A040244 AUZ5Z0B8175089

2 Faults Found:

17664 - Engine Coolant Temp Sensor (G62): Open or Short to Plus

P1256 - 35-10 - - - Intermittent

18080 - Coolant Fan Control 1: Open or Short to Ground

P1672 - 35-00 - -

Readiness: N/A

Address 03 -------------------------------------------------------

Controller: 1C0 907 379 M

Component: ESP FRONT MK60 0102

Coding: 0019458

Shop #: WSC 06435

2 Faults Found:

00668 - Supply Voltage Terminal 30

008 - Implausible Signal - Intermittent

00495 - ESP-Sensor Unit (G419): Supply Voltage

012 - Electrical Fault in Circuit - Intermittent

Address 08 -------------------------------------------------------

Controller: 8L0 820 043 H

Component: A3 KLIMAAUTOMAT 0105

Coding: 00044

Shop #: WSC 06435

No Faults Found

or DTCs not supported by controller

or a communication error ocurred

Skipping Address 15-Airbags

Address 17 -------------------------------------------------------

Controller: 8L0 920 950 D

Component: KOMBI+WEGFAHRS. M73 D04

Coding: 00440

Shop #: WSC 00000

WAUZZZ8L13A040244 AUZ5Z0B8175089

0 Faults Found:

Address 35 -------------------------------------------------------

Controller: 8D0 862 257 E

Component: CV-Pump, Alarm, RC D17

Coding: 15178

Shop #: WSC 06435

9 Faults Found:

01367 - Central Locking Pump Run Time Exceeded (Likely Leak)

35-00 - -

01371 - Alarm triggered by Door Contact Switch: Driver's Side

35-00 - -

01372 - Alarm triggered by Door Contact Switch: Passenger Side or Rear

35-00 - -

01374 - Alarm triggered by Terminal 15

35-00 - -

01370 - Alarm triggered by Interior Monitoring

35-00 - -

01369 - Alarm triggered by Hood Switch

35-00 - -

00955 - Key 1

09-00 - Adaptation Limit Surpassed

00956 - Key 2

09-00 - Adaptation Limit Surpassed

01134 - Alarm Horn (H12)

49-10 - No Communications - Intermittent

Address 45 -------------------------------------------------------

Controller: 4B0 951 173

Component: Innenraumueberw. D03

Coding: 00001

Shop #: WSC 00000

0 Faults Found:

Address 56 -------------------------------------------------------

Controller: 8L0 035 186 G

Component: concert II GRO 0008

Coding: 00001

Shop #: WSC 06435

1 Faults Found:

01317 - Control Module in Instrument Cluster (J285)

49-10 - No Communications - Intermittent

End -------------------------------------------------------

[ap0gee1978]

A loose connection on the battery gave me the run-around a while back, so check that - as did an incipient fault on my coolant temp sensor...

[rwbaldwin]

I'd try changing relay 109 (ECU power relay) before I took it to the dealer.

The whirring noise could be an electric fan cutting in when stationary

[skoda auto]

ok, i would advise you to delete all stored faults in all control units, then drive it and see what faults will come back. Once you establish what faults are stored again, then we will have more clue what we are talking about.

It could only be a poor earth somewhere....but do what i suggested above first

[eltax90]

Hi all

I had the car in at a garage yesterday and they have diagnosed the fault as the viscous pulley on the alternator as having destroyed itself.

New pully and alternator belt seems to have solved the problem...

[skoda auto]

Excellent, they do have one way clutch and if this fail can cause similar problem.

glad you sorted now!!!!!