SCAudiFan

I've done a search but come up empty. I posted a couple of days ago how my A6's tranny suddenly went into limp mode on Monday without any prior problems. Car has 115,000 miles on the clock and I have never changed the fluid (but have done a lot of reading here on the issue and noted problems from people that had changed it - so I was really in a dilemma as to whether it was better to change it or leave sleeping dogs lie).

Anyway I took it to my indy mechanic yesterday. He called me this morning and said it is throwing two codes, which he doesn't know how to interpret and I'm hoping for some help from some of you folks.

0705 - "Trans Circuit Malfunction"

1857 - "Trans Manufacturer Controller"

Any help would be most appreciated.

Yogee

Audi > C5 Platform > 1998 - 2005
5 Spd. Automatic Transmission 01V On Board Diagnostic (OBD)
01 - On Board Diagnostic (OBD)Part 2, up to DTC 17106 / P0722 VAG1551 Scan Tool Display

VAG1551 scan tool
Possible cause
Corrective action

00652 P0732

Engine RPM, transmission input RPM or transmission RPM faulty
Repair malfunctions as described for DTC 17116 / P0732, 00529 / P0727 or 00297 / P0722

Gear monitoring

ATF level not OK

Faulty or incorrect converter
Check and top off ATF level
=> Repair Manual, 5 Spd. Automatic Transmission 01V, Repair Group 37, checking and changing ATF
Check converter code












Implausible signal

Clutch or brake slip

Valve body or solenoid valves faulty







Continuation ?
Read measuring value block, display group number 007 1) => Page AUDI-C5-AT02-01-012-0101-196 and determine which elements are faulty and which are not active while driving.
Perform output Diagnostic Test Mode (DTM) => Page AUDI-C5-AT02-01-010-0101-173
Replace valve body if necessary
=> Repair Manual, 5 Spd. Automatic Transmission 01V, Repair Group 38; Oil pan, oil strainer, oil strainer and valve body removing and installing
VAG1551 Scan Tool Display

VAG1551 scan tool
Possible cause
Corrective action


00652 P0732


Gear monitoring

(Continuation for DTC 00652 / P0732)


Incorrect transmission or Engine Control Module installed


Check control module identification of transmission => Page AUDI-C5-AT02-01-003-0301-40





Check identification of Engine Control Module (ECM) => Repair Manual, Fuel Injection & Ignition, Repair Group 01
Replace Engine Control Module if necessary.


Implausible signal

Incorrect transmission may be installed (transmission code inappropriate for engine type)
Check transmission code
=> Repair Manual, 5 Spd. Automatic Transmission 01V, Repair Group 00, code numbers, aggregate allocation, ratios, equipment
1) Pay attention to which hydraulic control the transmission has when selecting measuring value block. For a more detailed description, => Page AUDI-C5-AT02-01-012-0101-196 under "Read measuring value block".
Note:
For malfunction recognition for DTC 00652 / P0732:
The ratio of engine RPM to transmission input RPM and transmission RPM with driving mode selected is implausible. (Requirement for malfunction recognition: transmission input RPM and transmission RPM larger than 64 RPM and engine RPM larger than 1400 RPM)
Implausibility of gear ratio of second gear is recognized by the Transmission Control Module (TCM)
VAG1551 Scan Tool Display

VAG1551 scan tool
Possible cause
Corrective action

00652 P0733

Engine RPM, transmission input RPM or transmission RPM faulty
Repair malfunctions as described for DTC 17117 / P0733, 00529 / P0727 or 00297 / P0722

Gear monitoring

ATF level not OK

Faulty or incorrect converter
Check and top off ATF level
=> Repair Manual, 5 Spd. Automatic Transmission 01V, Repair Group 37, checking and changing ATF
Check converter code












Implausible signal

Clutch or brake slip

Valve body or solenoid valves faulty







Continuation ?
Read measuring value block, display group number 007 1) => Page AUDI-C5-AT02-01-012-0101-196 and determine which elements are faulty and which are not active while driving.
Perform output Diagnostic Test Mode (DTM) => Page AUDI-C5-AT02-01-010-0101-173
Replace valve body if necessary
=> Repair Manual, 5 Spd. Automatic Transmission 01V, Repair Group 38; Oil pan, oil strainer and valve body removing and installing
VAG1551 Scan Tool Display

VAG1551 scan tool
Possible cause
Corrective action


00652 P0733


Gear monitoring

(Continuation for DTC 00652 / P0733)


Incorrect transmission or Engine Control Module installed


Check control module identification of transmission => Page AUDI-C5-AT02-01-003-0301-40





Check identification of Engine Control Module (ECM) => Repair Manual, Fuel Injection & Ignition, Repair Group 01
Replace Engine Control Module if necessary.


Implausible signal

Incorrect transmission may be installed (transmission code inappropriate for engine type)
Check transmission code
=> Repair Manual, 5 Spd. Automatic Transmission 01V, Repair Group 00, code numbers, aggregate allocation, ratios, equipment
1) Pay attention to which hydraulic control the transmission has when selecting measuring value block. For a more detailed description, => Page AUDI-C5-AT02-01-012-0101-196 under "Read measuring value block".
Note:
For malfunction recognition for DTC 00652 / P0733:
The ratio of engine RPM to transmission input RPM and transmission RPM with driving mode selected is implausible. (Requirement for malfunction recognition: transmission input RPM and transmission RPM larger than 64 RPM and engine RPM larger than 1400 RPM)
Implausibility of gear ratio of third gear is recognized by the Transmission Control Module (TCM).
VAG1551 Scan Tool Display

VAG1551 scan tool
Possible cause
Corrective action

00652 P0734

Engine RPM, transmission input RPM or transmission RPM faulty
Repair malfunctions as described for DTC 17118 / P0734, 00529 / P0727 or 00297 / P0722

Gear monitoring

ATF level not OK

Faulty or incorrect converter
Check and top off ATF level
=> Repair Manual, 5 Spd. Automatic Transmission 01V, Repair Group 37, checking and changing ATF
Check converter code












Implausible signal

Clutch or brake slip

Valve body or solenoid valves faulty







Continuation ?
Read measuring value block, display group number 007 1) => Page AUDI-C5-AT02-01-012-0101-196 and determine which elements are faulty and which are not active while driving.
Perform output Diagnostic Test Mode (DTM) => Page AUDI-C5-AT02-01-010-0101-173
Replace valve body if necessary
=> Repair Manual, 5 Spd. Automatic Transmission 01V, Repair Group 38; Oil pan, oil strainer and valve body removing and installing
VAG1551 Scan Tool Display

VAG1551 scan tool
Possible cause
Corrective action


00652 P0734


Gear monitoring

(Continuation for DTC 00652 / P0734)


Incorrect transmission or Engine Control Module installed


Check control module identification of transmission => Page AUDI-C5-AT02-01-003-0301-40





Check identification of Engine Control Module (ECM) => Repair Manual, Fuel Injection & Ignition, Repair Group 01
Replace Engine Control Module if necessary.


Implausible signal

Incorrect transmission may be installed (transmission code inappropriate for engine type)
Check transmission code
=> Repair Manual, 5 Spd. Automatic Transmission 01V, Repair Group 00, code numbers, aggregate allocation, ratios, equipment
1) Pay attention to which hydraulic control the transmission has when selecting measuring value block. For a more detailed description, => Page AUDI-C5-AT02-01-012-0101-196 under "Read measuring value block".
Note:
For malfunction recognition for DTC 00652 / P0734:
The ratio of engine RPM to transmission input RPM and transmission RPM with driving mode selected is implausible. (Requirement for malfunction recognition: transmission input RPM and transmission RPM larger than 64 RPM and engine RPM larger than 1400 RPM)
Implausibility of gear ratio of third gear is recognized by the Transmission Control Module (TCM).
VAG1551 Scan Tool Display

VAG1551 scan tool
Possible cause
Corrective action

00652 P0735

Engine RPM, transmission input RPM or transmission RPM faulty

Multi-function switch faulty
Repair malfunctions as described for DTC 17119 / P0735, 00529 / P0727, 00297 / P0722 or 00293 / P0705

Gear monitoring

ATF level not OK

Faulty or incorrect converter
Check and top off ATF level
=> Repair Manual, 5 Spd. Automatic Transmission 01V, Repair Group 37, checking and changing ATF
Check converter code












Implausible signal

Clutch or brake slip

Valve body or solenoid valves faulty







Continuation ?
Read measuring value block, display group number 007 1) => Page AUDI-C5-AT02-01-012-0101-196 and determine which elements are faulty and which are not active while driving.
Perform output Diagnostic Test Mode (DTM) => Page AUDI-C5-AT02-01-010-0101-173
Replace valve body if necessary
=> Repair Manual, 5 Spd. Automatic Transmission 01V, Repair Group 38; Oil pan, oil strainer and valve body removing and installing
VAG1551 Scan Tool Display

VAG1551 scan tool
Possible cause
Corrective action


00652 P0735


Gear monitoring

(Continuation for DTC 00652 / P0735)


Incorrect transmission or Engine Control Module installed


Check control module identification of transmission => Page AUDI-C5-AT02-01-003-0301-40


Implausible signal


Check identification of Engine Control Module (ECM) => Repair Manual, Fuel Injection & Ignition, Repair Group 01
Replace Engine Control Module if necessary.

1) Pay attention to which hydraulic control the transmission has when selecting measuring value block. For a more detailed description, => Page AUDI-C5-AT02-01-012-0101-196 under "Read measuring value block".
Note:
For malfunction recognition for DTC 00652 / P0735:
The ratio of engine RPM to transmission input RPM and transmission RPM with driving mode selected is implausible. (Requirement for malfunction recognition: transmission input RPM and transmission RPM larger than 64 RPM and engine RPM larger than 1400 RPM)
Implausibility of gear ratio of third gear is recognized by the Transmission Control Module (TCM).
VAG1551 Scan Tool Display

VAG1551 scan tool
Possible cause
Corrective action

00668 P0560

Open circuit or short circuit to Ground (GND)
Check wires and harness connectors according to wiring diagram

Battery Positive Voltage (B+) Term.

Fuse faulty
Read measuring value block => Page AUDI-C5-AT02-01-012-0101-196; Display group number 3 1)


Open circuit/short circuit to Ground (GND)


Perform electrical test => Page AUDI-C5-AT02-01-016-0101-283

1) Pay attention to which hydraulic control the transmission has when selecting measuring value block. For a more detailed description, => Page AUDI-C5-AT02-01-012-0101-196 under "Read measuring value block".
Note:
For DTC 00668 / P0560:
When vehicle voltage (terminal 30) fails, application values are lost, i.e Transmission Control Module (TCM) must learn these values again when vehicle is started. During this renewed "learning", shifting quality may be worse than normal.
This malfunction will only be registered by OBD if it occurs 5 times consecutively after the ignition is switched off and on.
VAG1551 Scan Tool Display

VAG1551 scan tool
Possible cause
Corrective action

01044 P1749





Control module incorrectly coded

Transmission Control Module recognizes invalid coding in EEPROM

=> Control module faulty
Check identification of Transmission Control Module (TCM) => Page AUDI-C5-AT02-01-003-0301-40, replace if necessary

VAG1551 Scan Tool Display

VAG1551 scan tool
Possible cause
Corrective action

01192 P0741

ATF level not OK

Faulty or incorrect converter
Check and top off ATF level
=> Repair Manual, 5 Spd. Automatic Transmission 01V, Repair Group 37, checking and changing ATF
Check converter code

Clutch for bridging converter

Mechanical malfunction in solenoid valve -N94

ATF supply to solenoid valve -N94 faulty

Wrong TCM installed
Read measuring value block => Page AUDI-C5-AT02-01-012-0101-196; Display group number 007 1) and check torque converter clutch (closed) and permissible torque slip
Check valve body
=> Repair Manual, 5 Spd. Automatic Transmission 01V, Repair Group 38; Oil pan, oil strainer and valve body removing and installing
Check control module version => Page AUDI-C5-AT02-01-003-0301-40


Speed deviation too high

Electrical activation of -N94 faulty
Repair malfunctions as described for DTC 00270 / P182

1) Pay attention to which hydraulic control the transmission has when selecting measuring value block. For a more detailed description, => Page AUDI-C5-AT02-01-012-0101-196 under "Read measuring value block".
Note:
For malfunction recognition for DTC 01192 / P0741:
The ratio of transmission speed and transmission input speed to engine speed (RPM) with the torque converter lock-up clutch closed (applied) is implausible.
VAG1551 Scan Tool Display

VAG1551 scan tool
Possible cause
Corrective action

01196 P1625

Ignition was switched on with connector for Transmission Control Module (TCM) -J217- disconnected.
Check connector of connecting wire between Engine Control Module (ECM) and Transmission Control Module (TCM).

Engine/Trans. CAN-Bus

Open circuit or short circuit between Engine Control Module (ECM) and Transmission Control Module (TCM).
Perform electrical test => Page AUDI-C5-AT02-01-016-0101-283
Read measuring value block => Page AUDI-C5-AT02-01-012-0101-196; Display group number 008 and 009 1)



Incorrect or faulty Engine Control Module (ECM)
Check identification of Engine Control Module (ECM) => Repair Manual, Fuel Injection & Ignition, Repair Group 01
Replace Engine Control Module if necessary.




Implausible signal

Incorrect or faulty Transmission Control Module (TCM)
Check identification of Transmission Control Module (TCM) => Page AUDI-C5-AT02-01-003-0301-40, replace if necessary => Page AUDI-C5-AT02-01-002-0101-11

SCAudiFan

Those are the codes he gave me, so I can't answer your question beyond that. I will give him this information and see if it helps. Thanks so much for taking the time to list all of these out!

4Driver4

Under the carpet by the passengers left foot, IIRC.

SCAudiFan

That's a good suggestion as I have had problems once in a while with Condensor moisture in the passenger foot well. Not often, but its been hot lately (in case no one else has noticed!).

Unless this is the problem I'm probably going to have to take it to the dealer for diagnosis.

4Driver4

The way the box and drain are designed, it's very difficult for the evaporator condensate to get into the car.

MP4.2+6.0

definitely look for water around the TCU box, under the front passenger footwell. If you ever had the windshield replaced, have had the HVAC air filter changed, or have leaves built up in that under cowl area, I would be suspicious.

Based on the codes with the paste of what looks like the Bentley text, also look at the tranny wiring under the car--the big connector that goes into the front of the tranny (which in turn goes to the valve body internally), as well as the output speed sensor on the passenger side of the tranny pretty far back. Either of those, or a fair number of other wiring or parts gremlins, could throw these kinds of codes and kick you into safe mode. If that is happening constantly, it would be something pretty definitive/broken, like a fried TCU due to water, a bad wire, sensor, connector, etc.

SCAudiFan

My indy guy pulled the carpet back in the passenger side yesterday and said it was dry as a bone. I dropped the car off at the dealer last night and asked them to see if they can diagnose the problem, so I've got my fingers crossed today.

4Driver4

Dry under the carpet means nothing. You MUST open the box to make sure the TCU itself is dry. Really.

SCAudiFan

Thanks 4Driver. I have conveyed your suggestion to the dealer. They called me just before lunch and said their tech had been working on the car for 2 hours this morning and hadn't identified the problem (at $100/hr) and wanted to know if I wanted them to keep going. Apparently there is a fuse of some sort in the main computer which kept blowing and he was having to back track every electrical circuit until he located where the issue was. Well, I guess I have no real choice but to let them keep looking.