P1768 error code - transmission take to dealer

stewarttownsend

Junior Member
Messages
469
Aloha

So having got her back on the road this year and had some fun drives out put it away for winter then, of course, my Cayenne decides it wants to play up so said to my mum would take her in the Maser south for her trip to my sisters, anyway after lots of lovely sat in traffic driving it threw check transmission beep wouldn't go past 3rd and I pulled into services thankfully just there (garage only not a coffee shop) then waited 12 hours for the AA to send a truck that could load it on in between them taking paid jobs !!!!!

So replacing the relay switch seemed the most obvious, open the door and pump primes but still getting errors and when plug-in OBD get this error

P1768 - Self-calbration fast gear change not carried out - Invalid signal

Could it be the clutch solenoid as google says, pump, computer says no :) Anyone else had this one and diagnosed?

Not going anywhere until spring so lots of time to trailer it off to be fixed.

Oh had new clutch fitted 5K miles ago.
 

conaero

Forum Owner
Messages
34,593
I would say the first thing you need to do is a gearbox relearn (with diagnostics) sounds like the TCU is having issues throwing gears above third as the per another’s are out of kilter.

If you can get to Sportsitalia in Southampton happy to try it FOC for you.

Could be the solenoid but I would expect an EV4 error to be present.