Codes p1731 and p1732?

2010 PORSCHE PANAMERA
120,000 MILES • 4.8L • V8 • TURBO • 4WD • AUTOMATIC
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AKRAM TOMIA
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Hello, I have a problem and I hope you can help me so my vehicle listed above, 2 weeks ago i turned on the car in the morning and had a message “transmission fault” and when i put the Gear on R the car wont reverse and on the dash the R is flashing and when i put on D the car is not driving and the car stuck on 2nd gear and N and P works normal.
Then i took the car to the workshop and the mechanic said its the gear sensor in OBD shows that there is a problem with 4th, 6th and 5th, 7th gear error code p1731 and p1732 so i ordered new part and after he installed it the car drive normal for like half day then i got the message “transmission fault” again and i park the car and turned it off for like 30min then turned on and it worked good and no message and i drove it to the same workshop again and now he said its the same part and on OBD this time shows problem with 4th and 6th gear and then i turned the car on again and it worked good again and no message on the screen.
Sep 3, 2025 at 12:50 AM
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STRAILER
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This can be one of two things, either the transmission control module is going out or you have a clutch assembly that needs to be replaced which is the more common issue. Has the DCT clutch been replaced recently? This is where I would start. Here is the control module location, you might want to try disconnecting the battery and removing the module connector to check for corrosion and then clear the codes. Check out the images (below). Let us know how it goes.



Sep 3, 2025 at 9:40 AM
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AKRAM TOMIA
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Thank you for answering and i want to let you know the new gear sensor i got is not original, should i get the one from the dealer then i try or i should check what you texted first?
Sep 3, 2025 at 12:34 PM
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STRAILER
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With Porsche, you should use OEM sensors, they are very finicky. I if not I would pull the transmission to do a clutch.
Sep 3, 2025 at 1:52 PM
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AKRAM TOMIA
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Thank you very much, I will report whether it was due to that, otherwise I will get back to you.
Sep 4, 2025 at 12:39 PM
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STRAILER
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Sounds good, :) have a good weekend!
Sep 4, 2025 at 6:16 PM