Hello , thanks for your question in the autoaid Community.
Your described fault Code means: Immobilizer signal – CAN data bus Wiring short circuit to ground
The Immobilizer is in the car keys. Erase this fault codes and use yur second key for a while.
Check after this if the Code is erased, then use your first key and look if this fault Comes again.
When this is, then your key has to be renewed and been learnd in by your Landrover dealer.