2007 VE SV6 Transmission Fault Code P01793

[Mon-aro]

Hi guys sorry if this has been discussed before i just couldn't see anything related to the issue im having right this second.

2007 Holden Ve SV6 the car starts fine used to drive for few seconds and it just stops. Not moving forward or in reverse. Looked under the car and there was an oil residue in the transmission oil pan.

Engine Fault Codes (0500 Speed Sensor)
Transmission Fault code (P1793 Please Refer to Vehicle service manual)
EBCM Faul codes (C0050 Rear Right wheel Speed Sensor Malfunction)
(C0045 Rear Left Wheel Speed Sensor Malfunction)
(C0569 System Configuration Wrong)
(C0245 Wheel Speed Sensor Signal Range/Performance)

The car was parked in farm for few months. And underneath the car is filthy as! And so is the inside i think they used it to transport hay! Anyways and help regarding the fault's codes would be greatly appreciated. I'm changing the transmission fluid and filter right now though. TIA

Edited***

Filter has metal shavings present
Going to replace filter and fluid and see how i go. Any suggestions regarding the fault codes would be great.

 

[uglyoldfatbastard]

On a farm and a P1793 which directly relates to the TCM (transmission control module)
Well on a farm they have mice and rats and they love to eat wiring so if I were a gambling man I would say somewhere under the car they have eaten some wiring OR the TCM has failed.
I would check all the wiring to the transmission while you are under there as it should be all sealed.

 

[Mon-aro]

On a farm and a P1793 which directly relates to the TCM (transmission control module)
Well on a farm they have mice and rats and they love to eat wiring so if I were a gambling man I would say somewhere under the car they have eaten some wiring OR the TCM has failed.
I would check all the wiring to the transmission while you are under there as it should be all sealed.

Thanks for the input mate, i will look for sure.

I was half way in filling the fluid and it started dripping so i thought i would start the car and change gears so fluid can flow in the system. Before when i used to change gears i cant feel anything but now i can feel it wants to move when gear changes i had to stop due to other committmens but hopefully that is a good sign the transmission not fully cooked. Fingers crossed.

 

[Mon-aro]

Just to keep everyone updated after replacing the filter and fluid the gears changes fine, so the transmission was dead die to clogged filter.

The P0500 Speed Sensor fault logged in the engine

P1793 Logged in the transmission still? Tried several time erase the codes but they are just wont erase? Any ideas?

 

[uglyoldfatbastard]

Just to keep everyone updated after replacing the filter and fluid the gears changes fine, so the transmission was dead die to clogged filter.

The P0500 Speed Sensor fault logged in the engine

P1793 Logged in the transmission still? Tried several time erase the codes but they are just wont erase? Any ideas?

Did you check all the wiring in the hard to get to places where vermin get in easy?

 

[Mon-aro]

Did you check all the wiring in the hard to get to places where vermin get in easy?

I did check the plug and didnt see anything abnormal, the car have 3x omega wheels ( 19" ) and the 4th is the stch wheel ( 18") would this trigger the fault codes?

 

[uglyoldfatbastard]

I did check the plug and didnt see anything abnormal, the car have 3x omega wheels ( 19" ) and the 4th is the stch wheel ( 18") would this trigger the fault codes?

Yes all wheels must be the same rolling diameter or the ABS/Traction control gets very upset.
Wiring damage might not be at plug and could be anywhere up to the ECU.
Fault codes are probably permanent now and won't clear until the problem is sorted and a number of starts/driving has occurred.

 

[Fu Manchu]

The speed sensor can be faulty and lead to other associated faults to occur. Replacing the speed sensor isn’t fun in the 5L40e.

If the gearbox is cooked, they are expensive as fk to rebuild. $5000-$6000 and I’d plan a manual conversion and save yourself the headaches. The 5L40e is a **** gearbox.

 

[Fu Manchu]

Yes, make sure all wheels are the same and the tyre sizes are the same.

 

[Mon-aro]

THIS IS GOLD!

( to me is ) lol



im back to my old project, issues as listed in the topic along with ABS / Traction control lights



From what i understood all faults are related to each other? i found this post and i will be adding the link for refrence.



Here



DTC P1793

Circuit Description

The engine control module (ECM) sends wheel speed data to the transmission control module (TCM). The data is sent to the TCM through a communication network called the controller area network (CAN). Two circuits are used to communicate CAN data between the ECM and TCM. A fault in the CAN will not cause DTC P1793 to set by itself. If a CAN fault occurs, other DTCs will set before DTC P1793.



When the TCM receives invalid wheel speed data from the ECM, then DTC P1793 will set. DTC P1793 is a type C DTC.



DTC Descriptor

This diagnostic procedure supports the following DTC:



DTC P1793 Wheel Speed Signal



Conditions for Running the DTC

• The engine run time is at least 6 seconds.



• No other CAN errors are present.



Conditions for Setting the DTC

The TCM receives no valid wheel speed data from the ECM for 2 seconds.



Action Taken When the DTC Sets

• The TCM does not request the ECM to illuminate the malfunction indicator lamp (MIL).



• The TCM inhibits Autograde braking.



• The TCM records the operating conditions when the Conditions for Setting the DTC are met. The TCM stores this information as a Failure Record.



• The TCM stores DTC P1793 in TCM history.



Conditions for Clearing the DTC

• A scan tool can clear the DTC.



• The TCM clears the DTC from TCM history if the vehicle completes 40 warm-up cycles without a non-emission related diagnostic fault occurring.



• The TCM cancels the DTC default actions when the ignition is OFF long enough in order to power down the TCM.



Step

Action

Value(s)

Yes

No



1

Did you perform the Diagnostic System Check - Vehicle?

--

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information



2

Install a scan tool.

Turn ON the ignition with the engine OFF.

Important: Record all Failure Records before clearing the DTC. Using Clear Info erases the Failure Records from the ECM and TCM.



Record the DTC Failure Records.

Did you record any ECM Failure Records?

--

Go to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information

Go to Step 3



3

Clear the DTC.

Turn the ignition OFF for at least 30 seconds.

Start, and allow the engine to idle.

Did DTC P1793 reset?

--

Go to Step 4

Go to Intermittent Conditions in Engine Controls - 2.8L or Intermittent Conditions in Engine Controls - 3.6L (LY7)



4

Did any other DTCs set?

--

Go to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information

Go to Step 5



5

Replace the TCM.



Refer to Control Module References in Computer/Integrating Systems for replacement, set-up and programming.



Is the action complete?

--

Go to Step 6

--



6

Perform the following operation to verify the repair:



Select DTC on the scan tool.

Select Clear Info.

Start, and allow the engine to idle.

Select Specific DTC.

Enter DTC P1793.

Has the test run and passed?

--

Go to Step 7

Go to Step 2



7

With the scan tool, observe the stored information, capture info and DTC info.



Does the scan tool display any DTCs that you have not diagnosed?

--

Go to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information

System OK



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