DSG Fault A3 8P - Clutch temperature monitoring & Transmission Input Speed Sensor

[mattandrew]

I am having a problem with my 2004 A3 8P DSG

Driving along it it felt like it was surging, the car was jerking, kind of its running low on fuel

Belew is the VAGCOM report. With the erors highlighted in red


Anyone had the same



VAG-COM Version: Release 704.1
Data version: 20071016

Tuesday,01,April,2008,19:45:49:12592

Chassis Type: 1K0
Scan: 01 02 03 08 09 15 16 17 19 25 37 42 44 46 52 56 76 77 7D

VIN: WAUZZZ8P54A114429 Mileage: 108370km/67337miles

00-Steering Angle Sensor -- Status: OK 0000
01-Engine -- Status: OK 0000
02-Auto Trans -- Status: Malfunction 0010
03-ABS Brakes -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: OK 0000
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
52-Door Elect, Pass. -- Status: OK 0000
56-Radio -- Status: OK 0000
76-Park Assist -- Status: OK 0000
77-Telephone -- Status: OK 0000
7D-Aux. Heat -- Status: OK 0000

-------------------------------------------------------------------------------
Address 01: Engine Labels: None
Part No SW: 03G 906 016 AT HW: 028 101 145 3
Component: R4 2,0L EDC G000AG 5689
Coding: 0000078
Shop #: WSC 66565

No fault code found.
Readiness: 0 0 1 1 1

-------------------------------------------------------------------------------
Address 02: Auto Trans Labels: 02E-300-0xx.LBL
Part No SW: 02E 300 041 C HW: 02E 927 770 G
Component: GSG DSG 0623
Coding: 0000020
Shop #: WSC 06435

2 Faults Found:
18148 - Clutch Temperature Monitoring
P1740 - 012 - Electrical Fault in Circuit
17100 - Transmission Input Speed Sensor (G182): Implausible Signal
P0716 - 000 - -

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

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 8P0-820-043.LBL
Part No SW: 8P0 820 043 E HW: 8P0 820 043 E
Component: KlimavollautomatH12 0150

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. Labels: 8P0-907-279.LBL
Part No SW: 8P0 907 279 D HW: 8P0 907 279 D*
Component: Bordnetz-SG 1.0 H27 0601
Coding: A588DF00A2141000000000000000000000
Shop #: WSC 00000

Part No: 8P2 955 119 A
Component: Wischer WWS Audi350 0170
Coding: 16711696
Shop #: WSC 00000

No fault code found.

-------------------------------------------------------------------------------
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 0130
Coding: 0011602
Shop #: WSC 06435

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel Labels: 8P0-953-549-F.LBL
Part No SW: 8P0 953 549 F HW: 8P0 953 549 F
Component: J0527 H36 0070
Coding: 0013142
Shop #: WSC 12345

Part No: XXXXXXXXXXX
Component: E0221 H02 0030

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments Labels: 8P0-920-xxx-17.LBL
Part No SW: 8P0 920 980 H HW: 8P0 920 980 H
Component: KOMBIINSTR. VDO H25 0110
Coding: 0000403
Shop #: WSC 00557

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway Labels: 1K0-907-530.LBL
Part No SW: 1K0 907 530 B HW: 1K0 907 951
Component: Gateway H08 0090
Coding: 3F0F0FC8070101
Shop #: WSC 06435

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer Labels: 1K0-920-xxx-25.LBL
Part No SW: 8P0 920 980 H HW: 8P0 920 980 H
Component: KOMBIINSTR. VDO H25 0110

No fault code found.

-------------------------------------------------------------------------------
Address 37: Navigation
Cannot be reached

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver Labels: 8P0-959-801-MIN.LBL
Part No: 8P0 959 801 A
Component: Tuersteuerger. H10 0010
Coding: 0000120
Shop #: WSC 06435

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist Labels: 1Kx-909-14x.LBL
Part No: 1K2 909 144 E
Component: EPS_ZFLS Kl.10 1202

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv. Labels: 8P0-959-433.LBL
Part No: 8P0 959 433
Component: KSG H02 0040
Coding: 198800186D288F0FC85AC65000
Shop #: WSC 00340

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

Part No: 1K0 907 719
Component: Neigungssensor 002 0002

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

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. Labels: 8P0-959-802-MIN.LBL
Part No: 8P0 959 802 A
Component: Tuersteuerger. H10 0010
Coding: 0000120
Shop #: WSC 06435

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio Labels: None
Part No SW: 8P0 035 186 HW: 8P0 035 186
Component: concert II EU H53 0060
Coding: 0000235
Shop #: WSC 06435

No fault code found.

-------------------------------------------------------------------------------
Address 76: Park Assist Labels: 8P0-919-283.LBL
Part No SW: 8P0 919 283 HW: 8P0 919 283
Component: Parkhilfe 4-Kan H06 0020
Coding: 0001003
Shop #: WSC 06435

No fault code found.

-------------------------------------------------------------------------------
Address 77: Telephone Labels: 8P0-862-335.LBL
Part No SW: 8P0 862 335 K HW: 8P0 862 335 K
Component: FSE_255x BT H26 0340
Coding: 0011422
Shop #: WSC 00000

No fault code found.

-------------------------------------------------------------------------------
Address 7D: Aux. Heat Labels: 1K0-963-235.LBL
Part No SW: 1K0 963 235 C HW: 1K0 963 235 C
Component: PTC-Element 0404

No fault code found.

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

 

[Uwe@Ross-Tech]

Check wiring diagrams to see if these have anything in common?

-Uwe-

 

[Sebastian]

As Uwe already pointed out these faults have very likely something in common. Both sensors are combined in one component using one same connector and this connector seems to be a common cause.

 

[mattandrew]

I have just cleared the faults, (the engine and gearbox would have been cold) and they didn't reappear, drove around and for the first 5 minutes there were no error codes, then when all engine and box was warm the faults returned.

It is not doing it all the time, I cleared the codes, with the ignition on
only the first fault came up (18148), I then started the car and the second fault came up.


Sebastian
When you say "both sensors are combined in one component using one same connector and this connector seems to be a common cause" would this be affected by temperature? the component you mention is this in the gearbox or mounted external?

 

[Uwe@Ross-Tech]

We've been digging for that, but unfortunately haven't found anything. We suspect this stuff is all integrated inside the Mechatronic unit (J734).

-Uwe-

 

[mattandrew]

Is the Mechatronic externally mounted? Its going into audi tomorrow for a recall so ill get them to check it out. Then fit whatever it needs in our workshop.

 

[Uwe@Ross-Tech]

The "Mechatronic" is the Transmission Controller Electronics, as well as a number of sensors and actuators all in one unit. I believe it can be replaced without removing the transmission from the car, but replacing it likely to be costly.

-Uwe-

 

[mattandrew]

Ok ive got an update on this, the vehicle went into audi for a recall and at the same fault was diagnosed and they quoted for the replacement of the gearbox temp/speed sensor. A few weeks ago i set to replacing the Transmission Input Speed Sensor G182. I had to remove the end of the gearbox and the mechatronic unit to gain access to the sensor. I believe the replacement went well, at the same time I replaced the DSG oil. Everything was rebuilt according to the manual, all levels checked etc.

Here comes the BUT, then as the gearbox was getting up to temperature the same fault came up with the VAGCOM scan.

I am now thinking it could be a wiring fault somewhere, the sensor wires run through the gearbox and plug into the mechatronic unit, once the gearbox lid is on there is a big round plug which is plugged in. The error still does appear when the gearbox is cold though, so if it was a wiring fault why does it not occur straight away. As far as i can see the the mechatron unit is only passing the wiring onto the main plug.

Maybe the mechatronic unit is at fault and just throwing up a fault code on the speed sensor.

Thanks in advance matt

 

[Sebastian]

Please re-read my first reply, it is very unlikely to be the mechatronic unit itself - instead the wiring/connector is THE common fault here.

 

[mattandrew]

Please re-read my first reply, it is very unlikely to be the mechatronic unit itself - instead the wiring/connector is THE common fault here.

Thanks ill have another look into this, when you say common fault is it the connector inside the gearbox where is plugs ono the mechatronic unit or the plug on the outside of the gearbox. Ill have look at both .

Thanks again

 

[mattandrew]

Well I stripped the DSG down again and checked all the connections, the plug inside the gear box has four connections and all these are clean. I have cleaned the contacts on the multiplug on the outside of the gearbox, I didnt find any reason for a bad connection.

So its either a connection fault where the wires pass through the mechanron or from the multiplug to where ever they terminate.

What are the chances of the sensor been faulty

 

[mattandrew]

Please re-read my first reply, it is very unlikely to be the mechatronic unit itself - instead the wiring/connector is THE common fault here.

Are we talking about the connector inside the gearbox or the multiplug, ive check both with no joy.

Both sensors are combined in one component using one same connector and this connector seems to be a common cause.

Couple of questions please Sebastian
Have you got any contact info, email address etc of anyone who has had this problem with the connector or links to any forums?? When you say 'common fault' 'common cause' it seems like somone has had this problem.

Thanks in advance