Porsche PDK fault analysis. Ambiguous and difficult to diagnose faults. 

Thanks Daimon. Much appreciated. Jeff

Thanks. I'm lucky to PV on my side. He is a big brain.

I don't have any experience on the Panamera transmission, but I can't believe that it's too different. I'd be interested in knowing if another sensor fixes the problem. Did you do a calibration afterwards? If you haven't seen the video I released lately on calibrations I'd suggest looking at it.

​​​@@jeffrichardsoncardiyI had a calibration done by a local dealer. The technical said It took four attempts before the calibration would complete. Even afterwards it would intermittently lose reverse and only shift odd numbered forward gears (1-3-5-7). Also, limp mode will only occur after the transmission reaches full operating temperature or about 20-30 minutes of driving. After an hour sitting, the codes can be cleared and the car is drivable once again. I have a Launch x431 pro scan tool that can watch the live data stream but I didn't understand what the values were supposed to be until I found your channel. I ordered another sensor and hopefully that one is good otherwise I will have to buy one direct from Porsche. The information in your videos is invaluable. Thank you again and I'll follow up once I install the new sensor.

@@MrBdavis99 Keep me in the loop. I'm interested in the outcome. I'm not sure if you have the ability to test the old sensor like I did in the video once it's removed, but I'd be interested in what you find.

​@@jeffrichardsoncardiy Success! So I finally bought a new Distance sensor from a local Porsche dealer. I installed it and it immediately threw a fault code P1764. I then ran the calibration several times before it successfully completed. Afterwards, I drove the car for 30 miles with zero faults. The car is fixed. Thank you fit helping me understand the functionality of the sensor and the pdk gearbox.

@@MrBdavis99 Great news. Happy to help.

I never get down to Sydney. I avoid it like the plague. I live just north of Newcastle, If you are passing this way drop me a line. More than happy to talk Porsche to anyone. What do you drive?

Whilst it might apply to the Panamera, I have no idea as I've never had my hands on one.

You can't. Only aftermarket sensors are available. Part availability is one of the major issues with the transmission, as Porsche's solution to most problems is to buy a new transmission.