7spd gearbox

[johnny_quattro]

Recently encountered a few 'Gearbox malfunction - you can continue driving' messages on my driver's display. Fluid was replaced shortly after I got the car in Oct 2022. It can occur immediately on engine start or after a few seconds. The error message occurs more reliably on a trip to the shops when I return to the car so I'm wondering if this is heat-related i.e. multiplug connector coming loose when warm:

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02 Transmission

System description: 0B5 30TFSIRdW
Software number: 8K1927156B
Software version: 0002
Hardware number: 0B5927156E
Hardware version: H03
Serial number: 0000000302
ODX name: EV_TCMDL501
ODX version: A02044
Long coding: 000001

Trouble codes:
P179D00 - Cooling oil valve Electrical error
Intermittent
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Not sure but I have a feeling that my car might need to have the mechatronics upgrade kit fitted to fix this. Has anyone had this done on their B8 3.0 V6 supercharged? Or could it simply be a loose electrical connection?

Cheers
JWG