PID Code for transmission oil temperature

[danish]

Bought LELink Bluetooth LE 4.0+ module which works with EngineLink and OBD Fusion for iOS.

It seems to work fine, but it is not reading transmission oil temperature for the 2004 CS.

Does anyone know the custom PID that I can add to the app to read the transmission oil temperature?

[JFP in PA]

PID's are something the car's control computer has programmed into them, not something that can be added to a phone app.  If you cannot see the PID you are looking for, the computer is not programmed to display it, and you need to use an external tool (non contact pyrometer, thermistor, etc.) to get the reading.

[danish]

I know the PID is programmed, hence the reason to ask what it is. Most OBD apps for mobile phones let you enter the Custom PID to read using that PID. If the PID is not already in the list of PIDs your app is querying, you will have to add it manually so it can query that PID and display the info.

[Loren]

Porsche included a few select PIDs in the DME manuals up until the DME 7.2.

Since then they have not included any PIDs - I suspect because of their proprietary nature.

 

About the only way to get them would be to de-construct the DME firmware - which is likely what companies like Durametric have done.

Not an easy task and you likely need a great deal of prior knowledge of DME architecture.

[danish]

Thank you JFP and Loren.