A/C not working - Faults found:

[Von Maximo]

My Aircon doesn't seem to work although my Heater does. Performed a scan but can not find the fault codes from the Fault code directory.

Anyone shed some light on this for me? Or will I spend the summer being ****** alive! Please help save the life of a fellow Audi-sport member!!!!



Address 01: Engine Labels: None
Part No SW: 036 906 016 FF HW: 028 101 190 5
Component R4 2,OL EDC G000SG 6337
Shop #: WSC 0634

2 Faults Found:
18043 – Powertrain Data Bus: Missing Message from A/C Controller
P1635 – 000- - - Intermittent
Freeze Frame:
RPM: 798 /min
Torgue: 18.0 Nm
Speed: 0.0 km/h
Voltage: 14.29 v
Bin. Bits: 11000000
Bin. Bits: 00000000
(No units): 0.0

18049 – Please check DTC Memory of A/C Controller
P1641 – 000 - - - Intermittent
Freeze Frame:
RPM: 798 /min
Torgue: 20.0 Nm
Speed: 0.0 km/h
Load: 0.0 %
Voltage: 14.14 V
Bin. Bits: 11000000
Temperature: 87.3°C
(no units): 0.0

Readiness: 0 0 0 0 0

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

Address 09: Cent. Elect. Labels: 8P0-907-279.LBL
Part No SW: 8P0 907 279 A HW: 8P0 907 279 A*
Component: Bordnetz-SG 1.0 H30 0501
Coding: 0488F2A214100000000000000000000
Shop #: WSC 00000

Part No: 8P2 955 119 C
Component: Wischer WWS Audi350 0180
Coding: 16187408
Shop #: WSC 00000

4 Faults Found:
01330 - Central Control Module for Central Convenience (J393)
004 – No Signal/Communication - Intermittent
01320 – Control Module for Climatronic (J255)
004 – No Signal/Communication – Intermittent
00483 – Control Module for Auxiliary Air Heater
004 – No Signal/Communication – Intermittent
01431 – Control Module in Instrument Panel On Comfort Can (J285)
004 – No Signal/Communication - Intermittent

I've cleared the faults and they haven't come back even though the Aircon still doesn't work but heater does

 

[Uwe@Ross-Tech]

What happens why you try to access 08-HVAC?

-Uwe-

 

[Von Maximo]

What happens why you try to access 08-HVAC?

-Uwe-

I can open it ok and no faults show. Performed an "Sequential output test - 03" and nothing jumped out at me apart from that I could hear and see everything working (Blowers, Flaps, Lighting etc) apart from when testing the coolant fan a warning came up saying that it would indeed test the fan by running it, Couldn't hear or see anything. Not to sure if anything was meant to happen?

Was there anything else that I should have done in the 08-HVAC page?


Found some more fault codes! lol

VCDS Version: Beta 803.4
Data version: 20080413

Sunday,27,April,2008,15:47:10:13408

Chassis Type: 1K0
Scan: 01 03 08 09 15 16 17 19 25 37 42 44 46 47 52 56 77 7D

VIN: WAUZZZ8P35A006098 Mileage: 130580km/81138miles

00-Steering Angle Sensor -- Status: OK 0000
01-Engine -- Status: OK 0000
03-ABS Brakes -- 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
37-Navigation -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
47-Sound System -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
56-Radio -- Status: OK 0000
77-Telephone -- Status: OK 0000
7D-Aux. Heat -- Status: OK 0000

-------------------------------------------------------------------------------
Address 01: Engine Labels: 03G-906-016-BKD.lbl
Part No SW: 03G 906 016 FF HW: 028 101 190 5
Component: R4 2,0L EDC G000SG 6337
Revision: 12345678 Serial number: AUX7Z0D4FNO08T
Coding: 0000072
Shop #: WSC 06435 000 00000

No fault code found.
Readiness: 0 0 0 0 0

-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 1K0-907-379-MK60-F.lbl
Part No: 1K0 907 379 K
Component: ESP FRONT MK60 0103
Coding: 0023174
Shop #: WSC 06435 000 00000

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 8P0-820-043.lbl
Part No SW: 8P0 820 043 F HW: 8P0 820 043 F
Component: KlimavollautomatH12 0150
Revision: 007702 Serial number: 8P0820043F
Shop #: WSC 00000 000 00000

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. Labels: 8P0-907-279-23-H.lbl
Part No SW: 8P0 907 279 A HW: 8P0 907 279 A*
Component: Bordnetz-SG 1.0 H30 0501
Revision: 00030000 Serial number: 00000000816024
Coding: 04884F24A2141000000000000000000000
Shop #: WSC 00000 000 00000

Part No: 8P2 955 119 C
Component: Wischer WWS Audi350 0180
Coding: 16187408
Shop #: WSC 00000

4 Faults Found:
01800 - Light Switch (E1)
008 - Implausible Signal - Intermittent
00834 - Signal for Activation of Heated Rear Window
009 - Open or Short to Ground - Intermittent
00059 - Terminal 30 for Interior Lighting
012 - Electrical Fault in Circuit - Intermittent
00906 - Horn (H1)
009 - Open or Short to Ground - Intermittent

-------------------------------------------------------------------------------
Address 15: Airbags Labels: 8P0-959-655-84.lbl
Part No SW: 8P0 959 655 D HW: 8P0 959 655 D
Component: Airbag 8.4ED H00 0140
Coding: 0011602
Shop #: WSC 06435 000 00000

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel Labels: 1K0-953-549.lbl
Part No SW: 1K0 953 549 A HW: 1K0 953 549 A
Component: Lenksäulenmodul 012 0030
Coding: 0000042
Shop #: WSC 06435 000 00000

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments Labels: 8P0-920-xxx-17.lbl
Part No SW: 8P0 920 980 P HW: 8P0 920 980 P
Component: KOMBIINSTR. VDO H71 0200
Revision: D01 Serial number: 2244DD01000045
Coding: 0004408
Shop #: WSC 00503 210 91504

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway Labels: 1K0-907-530.lbl
Part No SW: 1K0 907 530 D HW: 1K0 907 951
Component: Gateway H08 0100
Revision: 08 Serial number: 2500104521044E
Coding: 3D0F0BCA070101
Shop #: WSC 06435 000 00000

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer Labels: 1K0-920-xxx-25.lbl
Part No SW: 8P0 920 980 P HW: 8P0 920 980 P
Component: KOMBIINSTR. VDO H71 0200
Revision: D01 Serial number: AUX7Z0D4FNO08T
Shop #: WSC 00212 210 63917

No fault code found.

-------------------------------------------------------------------------------
Address 37: Navigation Labels: 8E0-035-192-RNSE.lbl
Part No SW: 8P0 035 192 HW: 8P0 035 192
Component: RNS-E HIGH EU H99 0550
Revision: 12S Serial number: AUZBZ7G9908033
Coding: 0205213
Shop #: WSC 00212 210 91024

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver Labels: 8P0-959-801-MIN.lbl
Part No: 8P0 959 801 E
Component: Tuersteuerger. H10 0030
Coding: 0000048
Shop #: WSC 06435 000 00000

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist Labels: 1Kx-909-14x.lbl
Part No: 1K2 909 144 F
Component: EPS_ZFLS Kl.10 1301
Shop #: WSC 00000 000 00000

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv. Labels: 8P0-959-433.lbl
Part No: 8P0 959 433
Component: KSG H02 0040
Coding: 188000186D288F0F489AC63000
Shop #: WSC 06435 000 00000

Part No: 1K0 951 605 A
Component: LIN BACKUP HORN H01 1201

Part No: 1K0 907 719
Component: Neigungssensor 003 0003

Part No: 8P0 951 177
Component: Innenraumueberw.H03 0010

No fault code found.

-------------------------------------------------------------------------------
Address 47: Sound System Labels: 8Px-035-382.lbl
Part No SW: 8P3 035 382 HW: 8P3 035 382
Component: AB2 SUBWOOFERBOXH25 0160
Revision: 00003 Serial number: 10000001122899
Shop #: WSC 00000 000 00000

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. Labels: 8P0-959-802-MIN.lbl
Part No: 8P0 959 802 E
Component: Tuersteuerger. H10 0030
Coding: 0000048
Shop #: WSC 06435 000 00000

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio Labels: 8E0-035-192-RNSE.lbl
Part No SW: 8P0 035 192 HW: 8P0 035 192
Component: RNS-E HIGH EU H99 0550
Revision: 12S Serial number: AUZBZ7G9908033
Coding: 0205213
Shop #: WSC 00212 210 91024

No fault code found.

-------------------------------------------------------------------------------
Address 77: Telephone Labels: None
Revision: 00000001 Serial number: 00000000082747

No fault code found.

-------------------------------------------------------------------------------
Address 7D: Aux. Heat Labels: 1K0-963-235.lbl
Part No SW: 1K0 963 235 D HW: 1K0 963 235 D
Component: PTC-Element 0404
Revision: 00700000 Serial number:
Shop #: WSC 00000 000 00000

No fault code found.

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

 

[Sebastian]

What values do you have in Measuring Value Block (MVB) 002 of the HVAC (#08) Control Module?

 

[Von Maximo]

What values do you have in Measuring Value Block (MVB) 002 of the HVAC (#08) Control Module?

Info as requested:

Address 08: Auto HVAC (8P0 820 043 F)
18:05:04 Group 001: General
0.000 A A/C Regulating Valve (N280)
0.0 % A/C Regulating Valve (N280)
21.0 % High Pressure Sensor (G65)
6.0 bar Refrigerant Pressure
18:05:04 Group 002: Compressor Shut-Off Conditions
5.0 Current Shut-Off Condition
1.0 Last Shut-Off Condition
16.0 Last but One Shut-Off Condition
79.0 Last but Two Shut-Off Condition
18:05:04 Group 003: Left Temperature Flap Control Motor (V158) / Potentiometer (G220)
28.0 Feedback Value (Actual)
29.0 Feedback Value (Specified)
32.0 Minimum Position (Lower Stop/Cool)
221.0 Maximum Position (Upper Stop/Hot)

 

[Sebastian]

Odd, haven't seen the conditions 16 and 79 before and they are not documented either. However, the values you posted were taken with the engine off, could you do the same (i.e. MVB 001 & 002) with the engine running so that the A/C could try to start?

 

[Von Maximo]

Odd, haven't seen the conditions 16 and 79 before and they are not documented either. However, the values you posted were taken with the engine off, could you do the same (i.e. MVB 001 & 002) with the engine running so that the A/C could try to start?

Engine running and A/C set to minimm temp and blower Max. STill got the 16 and 79 values on 002 what ever they are?

Address 08: Auto HVAC (8P0 820 043 F)
19:05:00 Group 001: General
0.640 A A/C Regulating Valve (N280)
58.0 % A/C Regulating Valve (N280)
20.5 % High Pressure Sensor (G65)
5.0 bar Refrigerant Pressure
19:05:00 Group 002: Compressor Shut-Off Conditions
0.0 Current Shut-Off Condition
1.0 Last Shut-Off Condition
16.0 Last but One Shut-Off Condition
79.0 Last but Two Shut-Off Condition
19:05:00 Group 003: Left Temperature Flap Control Motor (V158) / Potentiometer (G220)
167.0 Feedback Value (Actual)
166.0 Feedback Value (Specified)
32.0 Minimum Position (Lower Stop/Cool)
221.0 Maximum Position (Upper Stop/Hot)
Sunday,27,April,2008,19:06:26:13408
VCDS Version: Beta 803.4
Data version: 20080413

 

[Sebastian]

Shut-Off Condition indicates that the compressor is running, also the related values appear fine. It should give you cool air based on what I see.

 

[Von Maximo]

Shut-Off Condition indicates that the compressor is running, also the related values appear fine. It should give you cool air based on what I see.

Think it could be something Mechanical then? All I know is that it's defenitely not working as I've been roasting my nuts of all week!

 

[Sebastian]

The roasting issue might be related to your seat heating...

Seriously, based on what I see it "should" work unless I miss something obvious.

 

[aeroelastic]

The roasting issue might be related to your seat heating...

Seriously, based on what I see it "should" work unless I miss something obvious.

Hi I know this is old, did you get this sorted? I have a very similar issue. Thanks.